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Law Incorporation [45]
2 years ago
10

It takes 120 mL of 0.15 M of carbonic acid (H2CO3) to neutralize 300 mL of sodium hydroxide (NaOH) for the following balanced ch

emical reaction:
2NaOH + H2CO3 → N2CO3 + 2NaOH

The concentration of the sodium hydroxide _____.
Chemistry
1 answer:
Tju [1.3M]2 years ago
6 0
First of all, you need to convert mL to L; 120mL = 0.12L, 300mL = 0.3L.

n (moles of carbonic acid) = C (concentration) x V (volume)
n = 0.15M (0.15 mol L-1) x 0.12L
n = 0.018 mol

C (conc. of NaOH) = 0.018 mol x 2 moles (because there’s 2x NaOH) = 0.036 mol
C = n / V
C = 0.036 mol / 0.3 L
C = 0.12 mol L-1
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If I have 6 moles of a gas at a pressure of 3.4 atm and a volume of 10 liters, what
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Answer:

The temperature is 69.05 K.  

Explanation:

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PV=nRT

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3 years ago
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How much heat is absorbed when a 298.3 g piece of brass goes from 30.0 to 150
igor_vitrenko [27]

Answer:

Q = 1360.248 j

Explanation:

Given data:

Mass of brass = 298.3 g

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Heat absorbed = ?

SOLUTION:

Formula:

Q = m.c. ΔT

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m = mass of given substance

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ΔT = 150°C - 30.0°C  

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Q = 298.3 g × 0.038 J/g.°C × 120°C

Q = 1360.248 j

3 0
3 years ago
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