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bezimeni [28]
3 years ago
6

What is a substance​

Chemistry
1 answer:
____ [38]3 years ago
4 0

Answer: A substance is a particular kind of matter with uniform properties

Explanation:

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7 0
3 years ago
(45 pts) What is the theoretical yield (in g) of iron(III) carbonate that can be produced from 1.72 g of iron(III) nitrate and a
mote1985 [20]

Answer:

1.04g of iron III carbonate

Explanation:

First, we must put down the equation of reaction because it must guide our work.

2Fe(NO3)3(aq) + 3Na2CO3(aq)→Fe2(CO3)3(s) + 6NaNO3(aq)

From the question, we can see that sodium carbonate is in excess while sodium nitrate is the limiting reactant.

Number of moles of iron III nitrate= mass of iron III nitrate reacted/ molar mass of iron III nitrate

Mass of iron III nitrate reacted= 1.72g

Molar mass of iron III nitrate= 241.88 g∙mol–1

Number of moles of iron III nitrate= 1.72g/241.88 g∙mol–1= 7.11×10^-3 moles

From the equation of the reaction;

2 moles of iron III nitrate yields 1 mole of iron III carbonate

7.11×10^-3 moles moles of iron III nitrate yields 7.11×10^-3 × 1/ 2= 3.56×10^-3 moles of iron III carbonate

Theoretical mass yield of iron III carbonate = number of moles of iron III carbonate × molar mass

Theoretical mass yield of iron III carbonate = 3.56×10^-3 moles ×291.73 g∙mol–1 = 1.04g of iron III carbonate

8 0
3 years ago
Read 2 more answers
Chemical reactions that require oxygen are called _____ while those that do not require oxygen are considered _____.
Nostrana [21]

Answer:

The correct answer are aerobic and anaerobic.

Explanation:

The decomposition reaction of organic matter in the presence of oxygen is called aerobic reaction and is the most efficient process for releasing energy from organic matter. Anaerobic decomposition reactions are those in which oxygen is not present. Anaerobic decomposition of carbohydrates or sugars is called fermentation and anaerobic bacterial decomposition of proteins is called putrefaction.

Have a nice day!

6 0
3 years ago
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