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Lisa [10]
3 years ago
12

Please help :))

Chemistry
1 answer:
Leni [432]3 years ago
7 0

Answer:

3

Explanation:

Al + CuSO₄ → Al₂(SO₄)₃ + Cu

two aluminum atoms in products. put 2 in front of Al in reactants.

2 Al + CuSO₄ → Al₂(SO₄)₃ + Cu

three sulfur atoms and twelve oxygen atoms in products. put 3 in front of CuSO₄ in reactants.

2 Al + 3 CuSO₄ → Al₂(SO₄)₃ + Cu

three copper atoms in reactants. put 3 in front of Cu in products.

2 Al + 3 CuSO₄ → Al₂(SO₄)₃ + 3 Cu

The equation is balanced. Hope that helps.

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Which option is an element <br> A: carbon dioxide <br> B: Water <br> C: Air<br> D: Carbon
Ivenika [448]

Answer:

D: Carbon

Explanation:

The periodic table lists all the known elements. When looking at it, the only choice you will find is carbon. Therefore, carbon is the element.

Carbon is also by itself, just C.

Water is H2O, which is a molecule due to the 2 different elements.

Carbon Dioxide is CO2, which is a molecule due to the 2 different elements.

Air is just a mixture of different gas molecules, so therefore it is not an element.  

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3 years ago
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Answer:

Hey there!

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You operate a nuclear reactors and want to use fissionable mass that will sustain a slow control what type of mass will you use
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3 0
2 years ago
A student uses a solution of 1.2 molar sodium hydroxide (NaOH) to calculate the concentration of a solution of sulfuric acid (H2
Mila [183]

From the calculations, the concentration of the acid is 0.24 M.

<h3>What is neutralization?</h3>

The term neutralization has to do with a reaction in which an acid and a base react to form salt and water only.

We have to use the formula;

CAVA/CBVB = NA/NB

CAVANB =CBVBNA

The equation of the reaction is; 2NaOH + H2SO4 ----> Na2SO4 + 2H2O

CA = ?

CB = 1.2 M

VA =  50 mL

VB = 20 mL

NA = 1

NB = 2

CA = CBVBNA/VANB

CA = 1.2 M * 20 mL * 1/ 50 mL * 2

CA = 0.24 M

Learn more about neutralization:brainly.com/question/27891712

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5 0
2 years ago
How many molecules are in 2.00 moles of h2o
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3 years ago
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