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aalyn [17]
3 years ago
14

What is the molar mass difference of CaCO3 and NH4NO2? Use 0:12, Ca:40, 0:16, N:14

Chemistry
1 answer:
zimovet [89]3 years ago
7 0
It had to be b so it could of been it mix with the 20
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If the pOH of vinegar is 9.45, what is its [OH− ]?
goldfiish [28.3K]

3.55 × 10n M n = -10

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3 years ago
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. The freezing point of an aqueous solution containing a nonelectrolyte solute is – 2.79 °C. What is the boiling point of this s
Semmy [17]

Answer:

Boiling point of the solution is 100.78°C

Explanation:

This is about colligative properties.

First of all, we need to calculate molality from the freezing point depression.

ΔT = Kf . m . i

As the solute is nonelectrolyte, i = 1

0°C - (-2.79°C) = 1.86 °C/m . m . 1

2.79°C / 1.86 m/°C = 1.5 m

Now, we go to the boiling point elevation

ΔT = Kb . m . i

Final T° - 100°C  =  0.52 °C/m . 1.5m . 1

Final T° =  0.52 °C/m . 1.5m . 1  + 100°C → 100.78°C

4 0
3 years ago
Conociendo el volumen de la solución y la masa del soluto y su masa molar, ¿qué concentración es posible determinar
NISA [10]

Answer:

Conociendo el volumen de solución, masa de soluto y su masa molar, es posible determinar: B) Concentración molar

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M = No moles de solución de soluto / volumen (L)

Y a su vez los moles de soluto se encuentran por:

No moles de soluto = masa soluto / masa molar soluto

8 0
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What would be the formula for diphosphorus pentoxide? A. PO5 B. P2O5 C. P5O D. P5O2
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I am sure, the answer is variant B.

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3 years ago
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Image included
Romashka [77]

Answer:1

Explanation:cause castle told me

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2 years ago
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