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Anna11 [10]
3 years ago
11

What is the molarity of a solution when 2.75 g of NaCl is dissolved in 1100 mL of solution?

Chemistry
1 answer:
earnstyle [38]3 years ago
4 0

Answer:

Explanation:

0.25 M

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muminat

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6 0
3 years ago
at a particular temperature, asample of pure water has a Kw of 1.7x10-12. what is the hydroxide concentration of this sample
Lena [83]

Answer:

Hydroxide concentration of the sample is 1.3x10⁻⁶M

Explanation:

The equilibrium constant of water, Kw, is:

H₂O(l) ⇄ H⁺(aq) + OH⁻(aq)

Kw is defined as:

Kw = 1.7x10⁻¹² = [H⁺] [OH⁻]

As the sample is of pure water, both H⁺ and OH⁻ ions have the same concentration because come from the same equilibrium, that is:

[H⁺] = [OH⁻]

We can write the Kw expression:

1.7x10⁻¹² = [OH⁻] [OH⁻]

1.7x10⁻¹² = [OH⁻]²

1.3x10⁻⁶M = [OH⁻]

<h3>Hydroxide concentration of the sample is 1.3x10⁻⁶M</h3>
6 0
3 years ago
Cu + 2AgNO3 mc021-1.jpg Cu(NO3)2 + 2Ag The molar mass of Cu is 63.5 g/mol. The molar mass of Ag is 107.9 g/mol. What mass, in gr
Ray Of Light [21]
31.79 g Cu / 63.5 g/mol Cu ---> 0.5
0.5 * (2/1) ---> 1
1 * 107.9 g/mol Ag

107.9 grams
5 0
3 years ago
Read 2 more answers
Energy Reaction Diagram FOR Cellular Respiration: O2 + C6H12O6 —&gt; CO2 + H2O
Natalka [10]

Answer:

Explanation:

Balanced reaction diagram is

6O_{2}+C_{6}H_{12}O_{6} → 6CO_{2}+6H_{2}O

5 0
3 years ago
PLEASE HELP ME IM GIVING 30 POINTS
Digiron [165]
Sorry I need the points
4 0
3 years ago
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