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ziro4ka [17]
3 years ago
9

The temperature of a sample of iron with a mass of 10.0g changed from 50.4 degrees C with the release of 114J. What is the speci

fic heat of iron ?
Chemistry
1 answer:
earnstyle [38]3 years ago
6 0

Answer:

c = 449 \:  j   \: kg  {}^{ - 1}  \: k {}^{ - 1}

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Why does every plant cell have a nucleus
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Chlorine is used by textile manufacturers to bleach cloth. Excess chlorine is destroyed by its reaction with sodium thiosulfate,
harina [27]
Na2S2O3(aq) + 4Cl2( g) + 5H2O = 2NaHSO4(aq) + 8HCl(aq)

1)How many moles of HCl can form from 0.21 mol of Cl2?
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2)How many moles of H2O are required for the reaction of 0.18 mol of Cl2?
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6 0
3 years ago
Calculate the molarity of a solution made by adding 45.4 g of nano3 to a flask and dissolving it with water to create a total vo
aleksandr82 [10.1K]
Solutions are made up of two non reacting species called solute and solvent. The amount of solute in solvent is known as concentration of that solute. Concentration is often measured in Molarity. Molarity is the amount of solute dissolved in 1 dm3 of solution. Answer to your question is as follow;

3 0
3 years ago
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When 0.230 g of sodium metal is added to an excess of hydrochloric acid, 2390 J of heat are produced. What is the enthalpy of th
Dmitriy789 [7]

Answer:

ΔHrxn = 239 kj/mol

Explanation:

Given data:

Mass of sodium = 0.230 g

Heat produced = 2390 J

Solution:

Chemical equation:

2Na + 2HCl → 2NaCl + H₂

Number of moles of sodium:

Number of moles of sodium = mass / molar mass

Number of moles of sodium = 0.230 g / 23 g/mol

Number of moles of sodium = 0.01 mol

Enthalpy of reaction:

ΔHrxn =  2390 J / 0.01 mol

ΔHrxn = 239000 j/mol

ΔHrxn = 239 kj/mol

3 0
3 years ago
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