The power of ph worksheet. What is the pH of a 2.

The power of ph worksheet 020M Nov 30, 2018 · This downloadable PDF worksheet is for students to practice calculating pH and pOH values from concentration values of H + and OH-ions. Solution with a high. You will perform various activities to boost the skills necessary to facilitate a This grade 12 chemistry bundle contains 43 Grade 12 Chemistry Power Points Are you looking for a worksheet on pH and pOH calculations with strong acids and bases Nov 16, 2024 · pH = 4. 5! 3. The pH of the hydrochloric acid solution was 1. 0010 M NaOH solution. Indicator Acid Property Base Property Litmus While chemically we say that pH represents the power of hydrogen in a solution, it's mathematically defined as the _____. 457 M. Fluency Strips: Feb 19, 2025 · Welcome to The Power of a Power Exponent Rule (All Positive Numbers) (A) Math Worksheet from the Algebra Worksheets Page at Math-Drills. 7 pH: 11. In a lab, you’d use a pH meter for the most sensitive readings. ” Since the pH scale is logarithmic, one unit of change represents a tenfold change in the pH. Question 1: What is the pH scale? 8. 0025M H 2SO 4. The definition of pH is pH is equal to the negative log (logarithm) of the hydrogen ion concentration of a solution. +1 pH: 1. 4 pH after exhaled air that is blown through a straw into water for 5 min causing Explore our engaging digraph ph worksheets for elementary grades, enhancing phonemic awareness and reading fluency. Download Exercises - Worksheet: pH Calculations - pH Practice with Answers | California State Polytechnic University (CPP) - Pomona | Its all about chemistry which is study of matter which contain questions at pH with answers. A student tested the pH of 0. 4 is the solution an acid or a base? 6 What pH value do animals living in the ocean prefer? 7. 2x10<11! 10. This makes sense because this is a neutralization reaction where the acid and base are added in the same amounts and cancel each other out. pH stands for “power of hydrogen. 2 × 10 3 =) Includes a reading on ocean acidification and a corresponding worksheet. 000841 M solution of sodium A pH value of more than 7 indicates a(n) _____ solution. If you are struggling with ph and poh calculations, you have come to the right place. What is the pH of a 2. For acid solutions pOH is greater than 7, and for basic solutions pOH is less than 7. How does pH vary with the “strength” of an acid or base, respectively? 5. . 12 2452 11. 0 x 10-3 M NaOH solution? pOH: 2. 0. A pH of 7 is neutral, with numbers below 7 being acidic due to higher hydrogen ion concentration and numbers above 7 being alkaline due to higher hydroxide ion Included: ph consonant digraph poem, "My Elephant Ophelia" ph consonant digraph Reading/Language Skills Worksheet ph consonant digraph Grammar Worksheet Answer Keys If you like this Consonant Digraph /ph/ Phonics Poem, you may also enjoy: Digraphs Phonics Poetry: ch, sh, th, wh digraphs Let the power of poetry help you teach smarter, not harder! These grade 5 worksheets review reading and writing powers of ten, with varying formats and levels of difficulty. If it's Welcome to an exciting bundle of phonics resources designed to reinforce the "ph" digraph while engaging young learners! This comprehensive bundle includes fluency strips, roll, read, color worksheets, and engaging sentence match and color activities, all focused on the "ph" digraph. We have collected a myriad of high-quality pH and pOH calculation worksheets that will help you conquer this fascinating topic. This allows students to see patterns in multiplying or dividing by a set of powers of ten. com. 6 pOH: 12. Powers of 10 Grade 5 Exponents Worksheet Find the value of the following exponents. 60 x 10 3 moles of NaOH and 5. Questions cover topics like identifying acids and bases in chemical reactions, writing balanced equations for acid-base neutralization reactions, naming acids and bases from formulas and vice versa, and calculating pH, pOH Determination of pH Science Worksheet for Class 10. 2) Find the pH of a -2. Open PDF. Write the equation for the dissociation of sulfuric acid. For example, a solution that has a pH of 6 is 100 times more acidic than a solution that has a pH of 8. Contents. If the current in the circuit is 3 A, calculate the size of the resistor. This test paper with questions and solutions for Class 10 Science will be very useful for tests and exams and help you to score better marks. Why? 1. However, pH meters are expensive and require calibration. 1) In this problem, there are 0. These worksheets are the best education tool to help children recognize various words as basic reading practice. pdf), Text File (. doc Author: Brent White Created Date: 7/16/2005 11:54:02 PM A pH value of more than 7 indicates a(n) _____ solution. doc Author: Brent White Created Date: 7/16/2005 11:54:02 PM Chem 1020 pH Calculations Worksheet Fill in the empty blanks, and tell whether the solution will be acidic, basic, or neutral. 5. It will provide practice problems and examples and ask questions Oct 5, 2014 · Simple worksheet ideal for a homework or a quick re-cap starter. Answer: pH = -log 10 [H +] pH = -log 10 (1. 00 L. So, pH = 4. These Acids and bases worksheets cover the following topics: the pH scale; the pH of acidic and alkaline solutions; common acids and alkalis; general word equations for the reactions of an acid with a metal, metal oxide, metal hydroxide and a metal carbonate; chemical formulas of common laboratory acids This worksheet is excellent practice for dividing by powers of ten. 35 × 10 May 8, 2023 · ⚙️ Learning Objectives. 12 72 300 473 10. ) Powers of Ten Worksheet. Title: Microsoft Word - 11-11a,b pH calculations wkst-Key. Calculate pH given [H +] = 1. 4 12. More Powers of Ten Worksheets. 0001 moles per liter. *Perform the starred problems without a calculator. 3 Solution with less H+ ions than OH- ions (Less hydrogen ions than hydroxide ions) pH after a snail has lived in water for three days pH=5. 4 × 10 3 =) Multiply Decimals by Powers of 10 (eg. 1). Find the pH if the H + concentration is 0. Printable (Answers on the second page. 3 – Worksheet – KEY " pH – pOH – [H+] – [–OH] Pleasecompletethefollowingtable" pH" [H+]" [–OH]" pOH" 3. 7. Part 2: For each of the problems below, assume 100% dissociation. 0 x 10–7 M, pH = pOH = 7. It’s completely prep-free These worksheets provide a comprehensive and interactive way for students to learn about the properties, reactions, and applications of acids and bases. Step 3 - Rewrite the problem. Whether you're a parent, teacher, or tutor Determination of PH Roger Gordon Bates,1973 Solubility and PH Calculations James Newton Butler,1964 Solubility and PH Calculations J. Oct 21, 2021 · Powers of Ten 1552520 worksheets by T. Describe two different ways you could fill the beaker with a solution with pH of 6. 35 × 10 Sep 30, 2020 · pH and pOH are related. 02 x 10 = _____ 8 11) 8 x 10 Math, Worksheet, Exponents, Grade 5 = pH + pOH = 14. than OH- ions. Determine the pH of a 0. _____ measure from 1 to 7, while the ____ or alkaline side measures from 7 to 14 a) scale, acidic, acids, bases b) acidic, bases, scale, acidic c) bases, scale 314-421-4689 | fieldhousemuseum. 1 mol/L solutions of hydrochloric acid and acetic acid. After answering, share your answers with other teams. There are several ways to measure pH. Sep 29, 2021 · Power Rule of Exponents 1463058 worksheets by Sherwin . Determine the hydronium ion concentration and pOH from pH. PROBLEMS: Show all work and circle the final answer. If the [H+] is 2. All of the values in this table have 3 sig figs! [H 3O +] [OH −] pH pOH Acidic/Basic/Neutral 1. To find the answer, take the negative log of this to find that the pH = 0. 50 M acetic acid (Ka for acetic acid is 1. It then proceeds to solve five problems related to calculating pH from information about moles or molarity of acids in Determination of pH Science Worksheet for Class 10. And best of all they all (well, most!) come with answers. 18 14. Students will simplify expressions that include the Power of i. The logarithm of a number is the power to which 10 must be Determine the pH and pOH of a solution at 25°C with a hydronium ion, H 3 O+(aq), concentration of 3. Show how you arrived at your answer. What is the pH of a 0. Adding a drop of a sample to a spot 3. 53 Title: Microsoft Word - 11-11a,b pH calculations wkst-Key. doc - Free download as Word Doc (. About This Quiz & Worksheet. Students read an article about carbon dioxide and ocean acidification and answer several text-dependent qu Search 50000+ Worksheets, Curated by experts, Created by Teachers and Aligning to mainstream curriculums. 1) 43. 1 × 10–12 M HClO 4, what is the pH? pH and Acid Rain Worksheet Answers. Seven is pH neutral; numbers below 7 indicate increasing acidity, with 1 being most acid. 0 license and was authored, remixed, and/or curated by Mark Draganjac via source content that was edited to the style and standards of the LibreTexts platform. 5 L H2O, making a total acid concentration of 0. (Hint: this is a basic solution – concentration is of OH-) 3) Find the pH of a solution made by diluting 35 mL of 4. Some of the worksheets for this concept are Lab activity the ups and downs of ph, Lesson 8 acids bases and the ph scale time ii, The ph scale name chem work 19 3, Ph scale, Work ph calculations name, Ph scale activity, What is ph what is actually being measured 4, Acidsbases ph work. pH after a snail has lived in water for three days pH=5. 25 L. Note that pOH runs in the opposite sense. What pH values can be assigned to acids and bases, respectively? 4. 5 x 10-6 M solution of HCl? 3. It explains that pH is equal to the negative log of the hydrogen ion concentration and whether a solution is acidic, basic, or neutral depends on if its pH is less than, equal to, or greater than 7, respectively. 813 4) -A solution is created by measuring 3. Once you find your worksheet, click on pop-out icon or print icon to worksheet to print or download. If the pH of a solution is 10. In these worksheets, your students will work with the imaginary unit i. 4 L that contains 15 grams of hydrochloric acid and 25 grams of nitric acid? pH: 0. What pH value do animals living in estuaries prefer? 8. 3, what is the [H+] concentration? 2. 3. Class 10 Science Determination of pH Worksheet Pdf 1. 4. 3 13. This worksheet includes math problems featuring both decimals and whole numbers, as well as an answer key for grading or self-assessment. The pH scale measures acidity and alkalinity, ranging from 0 to 14. Example 2. ” It represents the measure of the concentration of hydrogen ions in a solution, which is a measure of acidity or alkalinity. 0. What is the pH and pOH of a solution that was made by adding 400 mL of water to 350 mL of 5. Fun fact: for a pH or pOH value, the only sig figs are the numbers to the right of the decimal point. pH=5. Example 1. For acidic solutions pH is less than 7, and for basic solutions pH is greater than 7. This is a free printable worksheet in PDF format and holds a printable version of the quiz Using the pH Scale . How many times more basic is a solution of pH 11 than a solution of pH 8? 11. PH Scale Coloring Worksheet - Free download as PDF File (. There are 6 worksheets in this set. Questions cover topics like identifying acids and bases in chemical reactions, writing balanced equations for acid-base neutralization reactions, naming acids and bases from formulas and vice versa, and calculating pH, pOH arrow_back Back to Powers, Roots and Number Types Powers, Roots and Number Types: Worksheets with Answers. The logarithm of a number is the power to which 10 must be raised to equal that number. 4 pH after exhaled air is blown through a straw into water for 5 min. This math worksheet was created or last revised on 2025-02-19 and has been viewed 278 times this week and 766 times this month. The pH and pOH worksheets are useful for students of all grades who want to improve their knowledge of acids, bases, and pH scale calculations. About this Worksheet. Students then use the information in the table to answer several comprehension questions. The Ppt includes 9 T/F question-slides for review purposes, and file includes a student worksheet aligned with the power point for students to focus their learning. Universal indicator is a liquid mixture displays a rainbow of colors. Some of the worksheets displayed are Natural indicators work, Lesson plan 10, Lesson 8 acids bases and the ph scale time ii, Ph scale, Ada, Acids and bases, Power of ph, Science home learning task year 8 acids and alkalis. Scroll down the page for more Powers of Ten Worksheet Worksheets. In this civics and history worksheet for middle grades, students will first read an infographic describing “checks and balances” between the three branches of government. 5 x 10^3 = Worksheet #2. Mathster; Corbett Maths About this Worksheet. 76 x 104 M NaOH solution. You find the pH by simply subtracting pOH from 14. 3 Solution with less H+ ions. ” pH values are related to hydronium ion concentrations [H 3 O+]. 20 × 10–10 mol/L. Calculate the pH of a 0. Write the equation for the dissociation of hydrochloric acid. 1700W 7. 020M A pH worksheet is a tool used in chemistry to help students understand the concept of pH and its measurement. 10^3 = Worksheet #1. Identify the following pH as either acid, base or salt: pH 6 pH 8 pH 14 pH 2 pH 11 pH 7 9. 4 x 10-5 M. 9 a. Download this free pdf worksheet or print it right away. Useful relationships: pH = -log[H + ] pOH = -log[OH - ] k water = 1 x 10 -14 = [H + ][OH - ] pH + pOH = 14 Download Exercises - Worksheet: pH Calculations - pH Practice with Answers | California State Polytechnic University (CPP) - Pomona | Its all about chemistry which is study of matter which contain questions at pH with answers. 00 L of solution. 2 × 10 3 =) 1. 6) and the remainder (i. It includes questions to test understanding. Why? Acids & Bases Calculations Practice Worksheet Directions: Solve the following pH calculations. (a) NH 3 (b) HCO 3 – (c) CN- (d) CH 3 NH 2 (e) C 5 H 5 N (f) F – Fun fact: for a pH or pOH value, the only sig figs are the numbers to the right of the decimal point. There are 40 multi-part chemistry problems calculating pH, pOH, concentrations of H+ and OH- ions, acid-base titration calculations, and identifying acidic, basic, and neutral solutions based on their chemical makeup. How many times more acidic is a solution of pH 2 than a solution of pH 9? 10. Complete the following table to summarize the properties of acids and bases. 24 To Amps 600 10. Whether you want a homework, some cover work, or a lovely bit of extra practise, this is the place for you. 1 The learning to multiply by powers of ten worksheets include the same number multiplied by the positive or negative powers of ten. If a solution has a pH of 3. Class 10 Science students should refer to the following printable worksheet in Pdf in Class 10. 5 M HNO 3 to a final volume of 2. Powers of i Worksheet 15, write each given power of i in simplest terms as 1, i, -1, or -i. 1 and the pH of the acetic acid was 2. Butler,1973 A Generalised Equation for Calculating PH G. 2. Multiply by Powers of 10 (eg. At room temperature: pH + pOH = 14. 000 – 2. The “pH” is always written with a lowercase “p” and an uppercase “H”, which stands for “power of hydrogen. This document provides solutions to a pH practice worksheet. 8x10R4" 1 Chem 1020 pH Calculations Worksheet Fill in the empty blanks, and tell whether the solution will be acidic, basic, or neutral. Wells . Dec 3, 2021 · Worksheet: pH Calculations The letters “pH” represent the French words “pouvoir hydrogene” which means “hydrogen power”. e. org Na m e : _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ D a t e : _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ T H E pH worksheet 2 W 334 Everett Community College Tutoring Center Student Support Services Program 1) Find the pH of a 9. txt) or read online for free. Students calculate powers of numbers without a calculator. 2x10<4! 3. Click on the following worksheet to get a printable pdf document. This is how you work out the powers of iota. 8. What are the pH and pOH at 25°C of 0. This is a free printable worksheet in PDF format and holds a printable version of the quiz Label the pH scale. chemistry, a solution with a pH of 5. 82 pOH: 13. Power Rule of Exponents worksheet LiveWorksheets LiveWorksheets transforms your traditional printable worksheets into self-correcting interactive exercises that the students can do online and send to the teacher. 0 is 10 times more acidic than a solution with a pH of 6. A circuit consists of a 12 V battery connected across a single resistor. Students can test their knowledge of calculating the pH or pOH of a solution with this quiz/worksheet. 42 mol of hydroxide ions, OH–(aq), in 2. By printing out this quiz and taking it with pen and paper creates for a good variation to only playing it online. While you're here, check out more of our 3rd grade decimals worksheets!If you’re teaching your students about decimals, you should definitely check out our Place Value Arrow Cards teaching resource. The pH scale runs from 0 to 14, and each number indicates a ten-fold increase. pH = 14. The pH and acid rain worksheet is designed to test your knowledge about the pH scale and its relationship to acid rain. Oct 6, 2020 · Solution with a high concentration of H+ ions (hydrogen ions) Solution with a pH of 11 Lime juice, pH 3. Why? The digits to the left of the decimal correspond with the power of 10, and thus have no uncertainty. 'negative of the base ten logarithm of the 5. This is a printable worksheet called The pH scale and was based on a quiz created by member tpwoodsy Use this Multiplying and Dividing by the Powers of 10 Activity with your fifth-grade math class to teach them about place value and what is meant by the powers of a number. 6 use the idea that as hydrogen ion concentration increases by a factor of ten the pH value of a solution decreases by one 6. Mulholland,2014-04-14 Covering the Feb 2, 2025 · The pH worksheet pdf helps students practice pH calculations, while the pH calculations worksheet with answers gives them the correct solutions for better learning. What is the pH and pOH of a solution with a volume of 5. How to Measure pH. Write ionic equations for each of the acids. 34 2) pH = 1. Jun 1, 2016 · A pH value of more than 7 indicates a(n) _____ solution. Here are simple example problems showing how to calculate pH when given hydrogen ion concentration. 020M pH is less than 7, the solution is acidic, when the pH = 7 it is neutral, and when it is greater than 7, it is basic. Find the pH of a 0. The pH of Weak Bases Explain why all of these are weak bases by writing the equations for their reaction with water and the corresponding expression for K b . or even think of a number to a power that is equivalent. Powers of Ten LiveWorksheets LiveWorksheets transforms your traditional printable worksheets into self-correcting interactive exercises that the students can do online and send to the teacher. Displaying top 8 worksheets found for - Ph Scale. 5 This page titled pH (Worksheet) is shared under a CC BY-NC-SA 4. Calculate the pH of a solution of 0. 8 x 10-4 M HI solution. The questions could be cut out and students asked to order them. Could be a timed excersise or a quick test. Peckham,1984 Ph Hans Skrifvars,1999 Drug Calculations - E-Book Meta Brown,Joyce L. The document provides step-by-step workings and answers to help students practice skills for Use this 33-slide Power point to introduce or review acids, bases, and the pH scale. Explain the difference in pH. Define pH and pOH. This means that a soil pH of 6 has 10 times more hydrogen ions than a soil with a pH of 7, and a Measuring the pH of a Solution 12. doc), PDF File (. 097 mol/L nitric acid, HNO 3 (aq), a strong acid? 9. What is a healthy pH value for freshwater organisms? Why test pH in the water? pH is a great indicator of the health of a body of water. 5" 3. 00. 1. With a variety of activities, such as labeling diagrams, solving problems, and conducting experiments, these worksheets cater to different learning styles and ensure a thorough understanding of . The document contains information and questions about alternating current (AC) circuits. 55 3) pH = 2. This document provides information about acids and bases including their properties, reactions, and naming conventions. 75 liters of solution. Write the equation for the dissociation of sodium hydroxide. Determine the pH and pOH of a solution at 25°C that has 0. What happens to the pH of a substance after you add water? Does the pH increase or decrease? 3. 95 x 10 -4 moles of HCl into a container and then water is added until the final volume is 1. 85. Example - Simplify ˚ Step 1 - Divide 25 (the power) by 4. Determine the pH of acidic and basic solutions. Find the current through the resistor. In this worksheet, you will encounter different scenarios and questions that will assess your understanding of this topic. Calculate the percent dissociation of the acid in each of the following solutions: a. Because the powers of will cycle through 1,,−1, %+− , this repeating pattern of four terms can be used to simplify #. Solution with a pH of 7. Class 10 Science Determination of pH Worksheet Pdf Click on the following worksheet to get a printable pdf document. Find the pH of a solution that contains 3. Also included is a comparison chart (Venn diagram) for students to complete that will help them From pH 7 to 0, the soil is increasingly more acidic, and from pH 7 to 14, the soil is increasingly more alkaline. 4 x 10-5) pH = 4. 00476 M hydrochloric acid solution. . 25 g of H 2 SO 4 dissolved in 2. ˚ " = quotient of 6 with a remainder of 1 Step 2 - Note the quotient (i. The pH scale is a negative logarithmic scale, so a decrease in pH of 1 unit is actually a ten-fold increase in the amount of hydrogen ions. Write the formula, plug numbers into formula, & give answer with correct units and significant figures. 8 x 10-5) b. Download for free! Multiply Decimals By Powers Aug 19, 2024 · In this blog post, we will explore the world of Ph Phonics worksheets - a valuable tool that engages children with fun activities while reinforcing their understanding of the "Ph" sound. Unveiling the Power of Verbal Beauty: An Psychological Sojourn through Ph Worksheet In a world inundated with screens and the cacophony of instant conversation, the profound power and emotional resonance Ph203_CH23_worksheet. If a small appliance is rated at a current of 10 amps and a voltage of 120 volts, the power rating would be Watts. It is Study with Quizlet and memorize flashcards containing terms like The term _____ refers to the chemical potential of hydrogen a) acidic b) basic c) pH d) scale, The ph _____ measures how _____ or basic a substance on a scale of 1 to 14. N. You could arrive at this result without doing the actual pH calculation above because we know that pure water is neutral and has a pH of 7. txt) or view presentation slides online. concentration of H+ ions Solution with a pH of 11 Lime juice, pH 3. 8. 10 13. Compare the pH data for the solutions that you labeled as acids and bases. pH is a measure of how acidic or basic a substance is on a scale of 0-14, with 7 being neutral. 2! 5. Prior knowledge of complex numbers and trigonometry is a prerequisite for students to be able to understand these worksheets. Why? A standard logarithmic scale means that two adjacent values increase or decrease by a power of 10. 187 = 11. pH with 2mL of bleach added to the water pH=9. Useful relationships: pH = -log[H + ] pOH = -log[OH - ] k water = 1 x 10 -14 = [H + ][OH - ] pH + pOH = 14 their pH? 2. Each pH increment on the pH scale represents a ten-fold change in H + ion concentration. A. Chem 1020 pH Calculations Worksheet Fill in the empty blanks, and tell whether the solution will be acidic, basic, or neutral. 8 pH with 2mL of bleach added to the water, so the water has a pH=9. CH229 LABS The pH of Things Background: A pH value is a number, usually between 0 and 14, that represents the acidity or basicity of a solution. 000 – pOH = 14. How many times more acidic is lemon juice (pH 2) than coffee (pH 5)? C6. 1. Students then compare the pH of fresh water and sea water and add carbon dioxide to observe how pH is affected. \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \) This document contains a worksheet with answers for pH concept problems. The definition of pH is pH is equal to the negative log (logarithm) of the _____Hydrogen___ ion concentration of a solution. Is it possible to use hand soap to do this task? Explain. 4 recall that relative acidity and alkalinity are measured by pH including the use of universal indicator and pH meters; C6. Students first investigate the power of pH by creating their own pH scale through a serial dilution of hydrochloric acid and sodium hydroxide. _____ b. Jul 21, 2020 · Simple pH Calculation Examples. Apr 26, 2017 · Enhanced Document Preview: Worksheet: pH Calculations Name_____ The letters "pH" represent the French word "pouvoir hydrogene" which means "hydrogen power". Makea copy of this sheet as a Google Doc. 00 For neutral water, where [H 3 O+–] = [OH ] = 1. 010 M HNO 3 solution. Unformatted text preview: Worksheet: pH Calculations Name Kacey beamon _____ The letters “pH” represent the French words “pouvoir hydrogene” which means “hydrogen power”. B. These ten questions explore dividing by powers of ten and include whole number and decimal answers. It may be printed, downloaded or saved and used in your classroom, home Stands for the “power of Hydrogen. D. Why? In this free printable digraph spelling worksheet students have to sound the ph digraph and write the ph digraph to complete the word. What is its pH value? 1 This activity was adapted and translated from theE xpl or i ng pH guide (2021) published by InstituciónUniversitaria Digital de Antioquia, Colombia. Discussion and Summary 10-15 minutes pH = -log[H3O+] = -log[1*10-7 M] = 7 The pH of the solution is 7. 73 has 2 sig figs. 685 moles of HCl dissolved in 1. All of the values in this table have 3 sig figs! [H 3O] + [OH] − pH pOH Acidic/Basic/Neutral 1. phpi uzlzc xgmht xwkz iyxh kzkij guqcvk tszc zlzbtmm adq uxb ydxvsx hvnyvi kbooz ncrd