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patriot [66]
3 years ago
6

Please help me with this problem.

Chemistry
1 answer:
brilliants [131]3 years ago
3 0
1 μL = 10^-6 L by definition

So...
82 μL = 82x10^-6 L = 8.2x10^-5 L


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. Cu - Cu2+ + 2e-
zhannawk [14.2K]

Answer:

An oxidation reaction

Explanation:

Only one reaction happened and no reduction occurs.Hence, this the redox reaction does not happen.

6 0
3 years ago
Why are there airlock on Mars and how do you think they work
UkoKoshka [18]

Answer:

to protect astronauts from dieing from no air or presurre

Explanation:

3 0
3 years ago
The density of an unknown gas at 98°C and 740 mmHg is 2.50 g/L. What is the molar mass of the gas with work showed?
noname [10]

Answer:

78.2 g/mol  

Step-by-step explanation:

We can use the <em>Ideal Gas Law</em> to solve this problem:

       pV = nRT

Since n = m/M, the equation becomes

      pV = (m/M)RT     Multiply each side by M

   pVM = mRT               Divide each side by pV

        M = (mRT)/(pV)

Data:

ρ = 2.50 g/L

R = 0.082 16 L·atm·K⁻¹mol⁻¹

T =98 °C

p = 740 mmHg

Calculation:

(a)<em> Convert temperature to kelvins </em>

T = (98 + 273.15) = 371.15 K

(b) <em>Convert pressure to atmospheres </em>

p = 740 × 1/760 =0.9737 atm

(c) <em>Calculate the molar mass </em>

Assume V = 1 L.

   Then m = 2.50 g

            M = (2.50 × 0.082 06 × 371.15)/(0.9737 × 1)

                = 76.14/0.9737

                = 78.2 g/mol

3 0
3 years ago
How to calculate the mass of fraction of all elements in calcium carbonate<br>(CaCO3)​
MrMuchimi

Answer:

I have made it in above figure hope it helps

7 0
3 years ago
10. A compound has an empirical formula of CH, and a molecular mass of 6 points
Bogdan [553]

Answer:

Molecular formula = C₅H₁₀

Explanation:

From the question given above, the following data were obtained:

Empirical formula of compound => CH₂

Molar mass of compound = 70.1 amu

Molecular formula of compound =...?

The molecular formula of a compound is usually a multiple (n) of the empirical formula i.e

Molecular formula = [CH₂]ₙ

Thus, to obtain the molecular formula of the compound, we must first determine the value of n. The value of n can be obtained as follow:

[CH₂]ₙ = 70.1

[12 + (2×1)]n = 70.1

[12 + 2]n = 70.1

14n = 70.1

Divide both side by 14

n = 70.1 / 14

n = 5

Molecular formula = [CH₂]ₙ

Molecular formula = [CH₂]₅

Molecular formula = C₅H₁₀

Thus, the Molecular formula of the compound is C₅H₁₀.

Explanation:

HOPE THIS HELPS!

7 0
3 years ago
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