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zloy xaker [14]
3 years ago
9

Help me its due soon thanks

Chemistry
2 answers:
fenix001 [56]3 years ago
6 0

B: Mercury and Mars have the same gravitational force.

You can see at the chart, it shows

Gravity: Mercury          Mars

            3.7 m/s2         3.7 m/2

         

UkoKoshka [18]3 years ago
5 0

Answer:

B

Explanation:

The gravity accelleration values are the same for both planets.

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Nitric acid (HNO3) is a strong acid that is completely ionized in aqueous solutions of concentrations ranging from 1% to 10% (1.
Alborosie

<u>Given:</u>

Concentration of HNO3 = 7.50 M

% dissociation of HNO3 = 33%

<u>To determine:</u>

The Ka of HNO3

<u>Explanation:</u>

Based on the given data

[H+] = [NO3-] = 33%[HNO3] = 0.33*7.50 = 2.48 M

The dissociation equilibrium is-

            HNO3   ↔    H+      +      NO3-

I            7.50               0                 0

C          -2.48          +2.48              +2.48

E            5.02            2.48              2.48

Ka = [H+][NO3-]/HNO3 = (2.48)²/5.02 = 1.23

Ans: Ka for HNO3 = 1.23

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