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wolverine [178]
3 years ago
15

How many atoms are in .00 × 10-10 g Au

Chemistry
1 answer:
Shtirlitz [24]3 years ago
6 0
Atomic mass Au = 196.96 u.m.a

196.96 g ----------- 6.02x10²³ atoms
0.00x10⁻¹⁰ g -------  ( atoms ? )

( 0.00 x10⁻¹⁰) x 6.02x10²³ / 196.96

0 / 196.96

= 0 atoms

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3 0
3 years ago
a chemist makes of silver perchlorate working solution by adding distilled water to of a stock solution of silver perchlorate in
Elodia [21]

The concentration of the chemist's working solution is 6.718 mol/L.

Given,

The volume of silver perchlorate solution (V₁) = 790 ml.

The volume of distilled water added to the silver perchlorate(V₂) = 290ml.

The concentration of a stock solution of silver perchlorate (C₂) = 18.3 mol/L.

We have to find the concentration of the chemist's working solution (C₁).

As we know,

V₁C₁ = V₂C₂

From the above formula, we get,

C₁ = V₂C₂/V₁

C₁ = 290 × 18.3/ 790

C₁ = 6.718 mol/L

The concentration of the working solution = 6.718 mol/L

Hence, the concentration of the chemist's working solution is 6.718 mol/L.

To learn more about the concentration or stock's solution, visit: brainly.com/question/14510306

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7 0
2 years ago
Consider the chemical reaction represented below
hjlf

Answer:

D

Explanation:

4 0
3 years ago
If a climate scientist says, "The CO2 concentration in 2018 was 407.4 ppm." What<br> do they mean? *
Alinara [238K]

Answer:

Ppm <u>means the concentration of vapors or gases</u> expressed in parts per million of polluted air.

Explanation:

In Chemistry and Physics, part per million or PPM is a measure that expresses the number of units of a certain existing substance for every million units of the mixture. (Concentration)

In climate the equation is used so:

  • ppm = parts of polluted air / million parts of air .
  • ppm = Liters of polluted air / 10∧6 Liters  of air.

This is used to find the concentration of gases expressed as parts of gas per million parts of the

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In this case, it would be<u> 407.4L of CO2 per 10∧6L of air.</u>

6 0
3 years ago
Which of the following is an example of a chemical change?
wolverine [178]

Answer:

C

Explanation:

6 0
3 years ago
Read 2 more answers
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