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postnew [5]
2 years ago
8

Select all the correct answers.

Chemistry
1 answer:
Andrei [34K]2 years ago
4 0

Scientists use scientific notation to communicate extremely small measurements. Hence, option A is correct.

<h3>What scientific notation?</h3>

Scientific notation is a way of writing very large or very small numbers.

Scientists use scientific notation to represent very small or very large numbers because this notation increases the  

  • accuracy of measured quantities.

  • convenience in using the numbers.

  • the number of significant figures.

  • precision of measurements.

Hence, option A is correct.

Learn more about the scientific notation here:

brainly.com/question/18073768

#SPJ1

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You have a solution that is 0.02M formate (HCOO-) and 0.03M formic acid (HCOOH), which has a Ka of 1.8x10-4. What is the pH of t
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3.6

Explanation:

Step 1: Given data

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The scale used to measure the basicity of a substance is called the pH Scale. A base which when measured on a pH scale obtains a  value greater than 7 but less than or equal to 10 is weak base and from 10-14 is strong base

<h3>Meaning of Base and basicity</h3>

A base is any substance that has the ability to accept hydrogen ion in water and also netralize an acid when mixed together.

Basicity is an attribute associated with the pH scale measurement of values above 7 to 14.

Basicity increases on the scale from 7 to 14. On the pH scale 7 is neutral. So the higher we go the more basic a solution becomes until it gets to its highest point which is 14.

In conclusion, The scale used to measure the basicity of a substance is called the pH Scale. A base which when measured on a pH scale obtains a  value greater than 7 but less than or equal to 10 is weak base and from 10-14 is strong base

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