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iogann1982 [59]
2 years ago
13

How many joules of heat are needed to change 50.0 grams of ice at -15.0 °C to steam at 120.0 °C?

Chemistry
1 answer:
Ilya [14]2 years ago
8 0

Answer:

153.7kJ

HOPE this helps!!! :)

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What is the name for CH3-CH2-CH2-O-CH2-CH3?
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Mass of NaHCO3 sample (g): 1.20 g
sasho [114]

Answer: (22.98977 g Na/mol) + (1.007947 g H/mol) + (12.01078 g C/mol) + ((15.99943 g O/mol) x 3) = 84.0067 g NaHCO3/mol

9.

(1.20 g NaHCO3) / (84.0067 g NaHCO3/mol) = 0.0143 mol NaHCO3

10.

Supposing the question is asking about "how many moles" of CO2. And supposing the reaction to be something like:

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(0.0143 mol NaHCO3) x (1 mol CO2 / 1 mol NaHCO3) = 0.0143 mol CO2 in theory

11.

n = PV / RT = (1 atm) x (0.250 L) / ((0.0821 L atm/K mol) x (298 K)) = 0.0102 mol CO2

12.

(0.0143 mol - 0.0102 mol) / (0.0143 mol) = 0.287 = 28.7%

Explanation:

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A mass of 2.20 kg of sodium phosphate is converted number of moles
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Explanation:

here's the answer to your question

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