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tekilochka [14]
1 year ago
11

Round 0.02056 to three significant figures 0.0205 0.0206 0.021 0.020

Chemistry
1 answer:
____ [38]1 year ago
6 0

In this question we are asked to round off the figure 0.02056 to three significant figures.

We are given with four options to chose best out of four

a) 0.0205

b) 0.0206

c) 0.021

d) 0.020

In this question, option (b) is correct i.e. 0.0206.

There are four significant rules, we should keep in mind during round off:

  • Non-zero digits are so significant
  • Zeros between two non-zero digits are significant
  • Leading zeros are not significant
  • Trailing zeros are important only if the number contains a decimal point

To know more about Round off:

brainly.com/question/24234983

#SPJ4

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6 0
4 years ago
Convert the following<br> 4. 100 cm =<br> 5. 453 m = _<br> 6. 89847nm = _<br> 7. 3Mm =
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3 years ago
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8 0
3 years ago
why do you use a graduated cylinder to measure out the desired volume of koh and h2so4, rather than a pipet or a buret?
sergey [27]

The graduated cylinder is used to measure the volume of KOH and H2SO4 when accurate volume measurement is not required.

In the laboratory certain graduated apparatus are used to measure liquids. These graduated apparatus used to measure liquids include;

  • burette
  • pipette
  • measuring cylinder
  • Erlenmeyer flask

Sometimes, we are not really looking for a strictly accurate volume of liquid and we can use a graduated cylinder to measure the volume of liquid in such cases.

However, when we need to have strictly accurate volume measurement, we need a pipet or a buret.

Learn more: brainly.com/question/15670537

7 0
2 years ago
When sulfur burns, it forms sulfur dioxide (SO2). Its chemical reaction is S + O2 → SO2.
Elenna [48]

Answer:

The mass of SO2 will be equal to the sum of the mass of S and O2.

Explanation:

This can be explained by the <em>Law of Conservation of Mass</em>. This law states that mass can neither be created nor destroyed. Knowing this, we can say that the reactants of a chemical reaction must be equal to the products.

In this case, the reactants Sulfur (S) and Oxygen (O2) must equal the mass of the product Sulfur Dioxide (SO2). Therefore, the statement <em>"The mass of SO2 will be equal to the sum of the mass of S and O2" </em>is correct.

4 0
3 years ago
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