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Butoxors [25]
3 years ago
6

Can someone help me with these three Chemistry questions?

Chemistry
1 answer:
Xelga [282]3 years ago
8 0
There are 6 molecules of Mg3(PO4)2
6 × 3 = 18 Mg
6 × 4 × 2 = 48 O

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Which reagent is the limiting reactant when 0.400 mol Al(OH)3 and 0.400 mol H2SO4 are allowed to react
jeka94

Answer:

H₂SO₄  will be the limiting reagent.

Explanation:

The balanced reaction is:

2 Al(OH)₃ + 3 H₂SO₄ → Al₂(SO₄)₃ + 6 H₂O

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction. When the limiting reagent is finished, the chemical reaction will stop.

To determine the limiting reagent, it is possible to use the reaction stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction).

You can use a simple rule of three as follows: if by stoichiometry 2 moles of Al(OH)₃ reacts with 3 moles of H₂SO₄, how much moles of H₂SO₄ will be needed if 0.4 moles of Al(OH)₃ react?

moles of H_{2} SO_{4} =\frac{0.4 moles of Al(OH)_{3}*3 moles of H_{2} SO_{4} }{2 moles of Al(OH)_{3}}

moles of H₂SO₄= 0.6 moles

But 0.6 moles of H₂SO₄ are not available, 0.40 moles are available. Since you have less moles than you need to react with 0.4 moles of Al(OH)₃, H₂SO₄  will be the limiting reagent.

7 0
3 years ago
During a chemical reaction, if the concentration of reactants and products doesn't change, the reaction has likely stopped. true
hoa [83]

According to the research, the correct option is false, the statement related to a chemical reaction is false.

<h3>What is a chemical reaction?</h3>

They are reactions involving two or more substances (reactants), which change significantly in the process, and can consume or release energy.

Every chemical reaction subjects matter to a chemical transformation, altering its structure and molecular composition.

Therefore, we can conclude that according to the research, the correct option is false, the statement related to a chemical reaction is false.

Learn more about a chemical reaction here: brainly.com/question/14929452

#SPJ1

5 0
2 years ago
Convert each of the measurements given to the new unit stated using the factor label method (dimensional analysis). Show all wor
Diano4ka-milaya [45]

26 cm -0.26 m

4 hr - 240 min

3.25 km -3250 m

5 ft -60 inches

3 0
3 years ago
Which type of precipitation occurs when the water vapor in a cloud freezes to form ice crystals?
Verizon [17]

Answer:snow i think

Explanation:

6 0
3 years ago
Read 2 more answers
Which step of scientific inquiry involves organizing and interpreting the data?
elena-14-01-66 [18.8K]

b. Analysis. In the analysis step, you organize and interpret your data to see if they support your hypothesis.

a. Experimentation is <em>incorrect</em> because this is the step in which you do experiments to test if your prediction is accurate.

c. Conclusion is <em>incorrect</em> because a conclusion is a decision you make to accept or reject your hypothesis.

d. Hypothesis is <em>incorrect</em> because a hypothesis is a proposed explanation for why something happens.

8 0
3 years ago
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