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alexgriva [62]
2 years ago
5

Help!! 15 Points! Science!

Chemistry
1 answer:
jeka57 [31]2 years ago
6 0
In order from the first question to the last:
A
C
B
C
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What type of elements make up ionic bonds?
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Answer: An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between a cation, which is usually a metal, and an anion, which is usually a nonmetal.
basically explains
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How many moles of copper would be needed<br> to make 1 mole of Cu,O?
azamat

Answer:

You can view more details on each measurement unit: molecular weight of Copper(I) Oxide or grams The molecular formula for Copper(I) Oxide is Cu2O. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Copper(I) Oxide, or 143.0914 grams.

Explanation:

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How many total atoms are in 3Na2SO4?
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A. 21

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50 POINTS [PLEASE] i'm so behind, and i've been catching up on EVERYTHING :,(
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8. b
9. c
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3 years ago
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Isopropanol burns in oxygen to yield carbon dioxide, water, and heat. Which word equation best represents this chemical reaction
Oksana_A [137]

Answer:

isopropanol + oxygen Right arrow. carbon dioxide + water + heat

Explanation:

Word equation:

isopropanol + oxygen    →   carbon dioxide + water + heat

Chemical equation:

2C₃H₇OH  + 9O₂       →     6CO₂ + 8H₂O + Heat

The given reaction is combustion of isopropanol. Isopropanol burn in the presence of oxygen and produced carbon dioxide and water. Heat is also produced in this reaction.

The given reaction also follow the law of conservation of mass. There are equal number of moles of each element on both side of reaction equation thus mass remain conserved.

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