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3 years ago

__________the lowest point on a wave

Chemistry

2 answers:

grandymaker [24]3 years ago

8 0

Answer:

Trough

Explanation:

The trough is the lowest point on a wave. The highest point on a wave is called a crest.

pav-90 [236]3 years ago

5 0

Answer:

The lowest point on a wave?

The lowest point on the wave is called as through or wave through.

The highest point on the wave is known as the crest or wave crest

The space between the crests is called the wave length.

The distance between the wave crest and the wave trough is called the wave height.

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Enter your answer in the provided box. Sodium stearate (C17H35COONa) is a major component of bar soap. The Ka of the stearic aci

kogti [31]

Answer:

11.61 is the pH of 10.0 mL of a solution containing 3.96 g of sodium stearate.

Explanation:

Concentration of sodium stearate acid : c

Moles of sodium stearate = $\frac{3.96 g}{306 g/mol}=0.01294 mol$

Volume of the solution = 10.0 mL = 0.010 L

$c=\frac{0.01294 mol}{0.010 L}=1.294 M$

$C_{17}H_{35}COONa\rightleftharpoons C_{17}H_{35}COO^-+Na^+$

$[C_{17}H_{35}COO^-]=c=1.294 M$

$C_{17}H_{35}COO^-+H_2O\rightleftharpoons C_{17}H_{35}COOH +OH^-$

initially c

c 0 0

At equilibrium

(c-x) x x

Dissociation constant of an acid = $K_a=1.3\times 10^{-5}$

Expression of a dissociation constant of an acid is given by:

$K_a=\frac{[C_{17}H_{35}COOH][OH^-]}{[C_{17}H_{35}COO^-]}$

$K_a=\frac{(x)^2\times x}{(c -x)}$

$1.3\times 10^{-5}=\frac{x^2}{1.294-x}$

Solving for x;

x = 0.0041 M

$[OH^-]=0.0041 M$

The pOH of the solution:

$pOH=-\log[OH^-]=-\log[0.0041 M]=2.39$

pH = 14 -pOH

pH = 14 - 2.39 = 11.61

11.61 is the pH of 10.0 mL of a solution containing 3.96 g of sodium stearate.

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2 years ago

__________the lowest point on a wave​

__________the lowest point on a wave