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Norma-Jean [14]
4 years ago
5

Can y'all help me on number 10❤️

Chemistry
1 answer:
RoseWind [281]4 years ago
4 0
I believe the answer is A.
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3 years ago
What is difference between ∆H and ∆H°
Elena-2011 [213]

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An object has a weight of 5.10 Newtons (N) at sea level, where the acceleration due to gravity is 9.81 m/s2.
RUDIKE [14]
Well, you could get the mass as m=\frac{G_0}{g_0} ad then g_1=\frac{G_1}{m}, where G_0 is the sea level weight, g_0 the sea level accel., g_1 the accel. above while G_1 the weight above.
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What is the percent composition of calcium fluoride
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8 0
3 years ago
A solution of acetic acid has a pH of 3.45. What is the concentration of acetic acid in this solution? Ka for CH3COOH is 1.8×10-
Serjik [45]

Answer:

0.007 M

Explanation:

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Thus,  

pH = - log [H⁺]

The expression of the pH of the calculation of weak acid is:-

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Where, C is the concentration = ?

Given, pH = 3.45

So, for CH_3COOH, K_a=1.8\times 10^{-5}

3.45=-log(\sqrt{1.8\times 10^{-5}\times C})

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C = 0.007 M

5 0
3 years ago
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