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sergey [27]
3 years ago
10

PLEASE HELP THIS IS DUE IN AN HOUR!!!

Chemistry
1 answer:
Soloha48 [4]3 years ago
7 0

Explanation:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH. [H3O+] = 10-pH or [H3O+] = antilog (- pH) Example: What is the hydronium ion concentration in a solution that has a pH of 8.34? On a calculator, calculate 10-8.34, or "inverse" log ( - 8.34).

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When an electron of a hydrogen atom travels from n = 4 to n = 2, a photon of energy 4.165 × 10-19 joules is released. Calculate
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Explanation:

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3 years ago
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If the sun is next to the earth on the left, and the moon is next to the earth on the right, what type of tide is it?
Andrej [43]

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2 years ago
Calculate the moles and grams of solute in each solution. D. 2.0 L of 0.30M Na2SO4. I already have A, B, and C. Thanks!
e-lub [12.9K]
Find the number of moles
C = n / V
C(Concentration) = 0.30 moles / L
V ( Volume) = 2 L
n = ??
n = C * V
n = 0.30 mol / L * 2 L
n = 0.60 mol


Find the molar mass
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1S   = 32 * 1 = 32 grams
O4   = 16 * 4 = 64 grams
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Find the mass
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given mass = ???

given mass = molar mass * mols
given mass = 142 * 0.6
given mass = 85.2 grams. 

85.2 are in a 2 L solution that has a concentration of 0.6 mol/L


4 0
3 years ago
Read 2 more answers
Help me please!!!!!!!
tatyana61 [14]

Answer:

The answer is A

Explanation:

4 0
2 years ago
The document that provides the structure for the us government is
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The Constitution provides the basic structure for US Government.

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