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leva [86]
4 years ago
12

Mass of NaHCO3 sample (g): 1.20 g

Chemistry
1 answer:
sasho [114]4 years ago
6 0

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:

NaHCO3 + H{+} = Na{+} + H2O + CO2

(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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The total pressure in a tank fill with a mixture of gasses : Oxygen, Helium, and Argon is 15.3 atm. The phe = 3.2 atm , Po= 7.4
Kisachek [45]

Answer:

Partial pressure of Ar = 4.7 atm

Explanation:

Total pressure of a mixture of gases = Sum of partial pressure of each gas

This mixture contains: O₂, He and Ar.

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Total pressure = Partial pressure O₂ + Partial pressure of He + Partial pressure of Ar

15.3 atm = 7.4 atm + 3.2 atm + Partial pressure of Ar

Partial pressure of Ar = 15.3 atm - 7.4 atm - 3.2 atm

Partial pressure of Ar = 4.7 atm

8 0
4 years ago
Write an equation for the hydrogenation of glyceryl trilinolenate, a fat formed from glycerol and three linolenic acid molecules
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Balanced chemical equation for the hydrogenation of glyceryl trilinolenate:

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Trilinolenate is the form of triglyceride esters of linolenic acid.

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5 0
4 years ago
Refer to the map of "The Major North American Land Biomes" to answer the question.
Misha Larkins [42]

Answer:

all i can help you with is one of them is Canada. If im

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8 0
3 years ago
Which statement best describes John Dalton’s use of creativity in his work?
Nezavi [6.7K]

Answer:A

Explanation:

On ed2020

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3 years ago
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kakasveta [241]

Answer:

1. Alpha particles consist of two protons and two neutrons.

Explanation:

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The correct option is option 1.

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