Consider the reaction below. 2Al2O3 mc031-1.jpg 4Al + 3O2 How many moles of oxygen are produced when 26.5 mol of aluminum oxide are decomposed?

Answers

Answer 1

Answer: 2Al₂O₃ ----> 4Al + 3O₂
2 moles 3 moles

2 moles of Al₂O₃ ---------- 3 moles of O₂
26,5 moles of Al₂O₃ ------ X
X = (26,5×3)/2
X = 39,75 moles of O₂

:)

Answer 2

Answer:

the answer is 3;4

Explanation:

i did the Assignment on edge

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What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million?(1) 0.005 g (3) 0.5 g
(2) 0.05 g (4) 5 g

Answers

Answer: The correct answer is (1).

Explanation:

Concentration of the solute in 1000 g of solution: 5 parts per million

1 part per million = 1 milligram/Liter

Then , 5 parts per million = 5 mg/liter

This means that 5 milligrams of solute is present in 1 liter solution.

1 gram = 1000 milligrams

Then 5 milligram = $5* (1)/(1000) g$ = 0.005 grams

Hence, 0.005 grams is the total mass of solute in 1000 grams of a solution having a concentration of 5 parts per million.

What are parts per million?

Parts per million (ppm) is how many parts a certain molecule or compound makes up within the one million parts of the whole solution.

Concentration of the solute in 1000 g of solution: 5 parts per million

1 part per million = 1 milligram/Liter

Then , 5 parts per million = 5 mg/liter

This means that 5 milligrams of solute is present in 1 liter solution.

1 gram = 1000 milligrams

Then 5 milligram = 5 X $(1)/(1000g)$ = 0.005 grams.

Hence, 0.005 grams is the total mass of solute in 1000 grams of a solution having a concentration of 5 parts per million.

Learn more about the parts per million here:

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The _____ rate is the number of particles that react in a given time to form products. a. le chantelier
b. reaction
c. dynamic
d. elementary

Answers

b. reaction rate is the answer

The correct ANWSER is b Mark me the brainliest anwser

What occurs when there are OH- ions in a solution? A. A sour taste B. A reaction with Al (s) to release hydrogen gas C. a slippery feeling D. A reaction with a base

Answers

The answer is (C) a slippery feeling. The solution with OH- ion is a base. So it will react with acid and can not react with Al to release H2. It tastes more like obscure, not sour.

What is the reaction when magnesium becomes magnesium oxide

Answers

Magnesium and oxygen reacting to form magnesium oxide is a synthesis reaction. This reaction occurs when many reactants proceeds to reaction forming a single product. Synthesis reactions release energy in the form of light or heat, therefore they are exothermic reaction.

Which of the following compounds does NOT contain molecules?a. H2
b. NaCl
c. CO2
d. H2O

Answers

Answer:

NaCl does not contain molecules

Explanation:

Molecules are made of multiple atoms bonded together to form a single entity.

In $H_(2)$ (H-H), two hydrogen atoms are bonded together through a covalent bond. Hence it is a molecule.

In $CO_(2)$ (O=C=O), one carbon atom and two oxygen atoms are bonded together through double bond. Hence it is molecule

In $H_(2)O$ (H-O-H), one oxygen atoms and two hydrogen atoms are bonded together through single bond. Hence it is a molecule.

In NaCl, $Na^(+) and Cl^(-)$ ions are held together through ionic attraction forces. Here no actual bond exists between $Na^(+) and Cl^(-)$ . Both $Na^(+) and Cl^(-)$ remain present as individual ions.

Hence NaCl does not contain molecules

B, molecules are ionic bonding this is covalent

Which contains more molecules: 1.00 mol H2O2, 1.00 mol C2H6, or 1.00 mol CO?

Answers

I believe H2O2 has the most, because it also has the most atoms (34)
Hope that helps!!

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