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levacccp [35]
3 years ago
7

Which of these changes would be classified as producing a chemical change a. freezing water b. mixing salt and water to make a s

olution c. heating cooking oil d. mixing a acid and a base to make a salt
Chemistry
1 answer:
trasher [3.6K]3 years ago
4 0

Answer:

Option B , Option C and Option D

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When 3.00 moles of hydrogen molecules and 1.50 moles of oxygen molecules react, they form 3.00 moles of water
bearhunter [10]

Mass of Oxygen required : 24 grams

<h3>Further explanation</h3>

Given

3 moles of H

1.5 moles of O

3 moles of H₂O

Required

Mass of O

Solution

Reaction

2H₂ + O₂ ⇒ 2H₂O

Mass of Oxygen for 1.5 moles of O :

= mol x Ar O

= 1.5 moles x 16 g/mol

= 24 grams

7 0
3 years ago
The _____ is the organelle that recycles unneeded molecules
Aneli [31]

Answer: Lysosomes

Explanation: The lysosome is an organelle that contains digestive enzymes and acts as the organelle-recycling facility of an animal cell. It breaks down old and unnecessary structures so their molecules can be reused. Lysosomes are part of the endomembrane system, and some vesicles that leave the Golgi are bound for the lysosome.

4 0
3 years ago
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Metals are cunductor of heat and electricity prove this statement​
Grace [21]

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Explanation:

7 0
3 years ago
Do bases gain or lose hydrogen ions
goblinko [34]
It depends upon the situation.
6 0
3 years ago
A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.152 g of hydrogen gas. what is t
mafiozo [28]

percentage of zinc= 5.985/20 X 100= 29.5%

let x represents zinc and y be magnesium so

Zinc(s) + 2HCl(aq) -----> ZnCl2(aq) +  H2(g)

Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)

1.152 g of hydrogen gas=( x/65.3 + y/24.305) 20

= 3.08 x10^-2 + 0.8295-8.30

=x=5.985

y= 4.015

percentage of zinc= 5.985/20 X 100= 29.5%

The hydrogen gas escapes, so the two products of Zinc Chloride and Magnesium Chloride will then react with Silver Nitrate. Again, I combine both of the reactions

To learn more about zinc:

brainly.com/question/13890062

#SPJ4

7 0
2 years ago
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