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tester [92]
3 years ago
9

Which statements are true about physical changes? Select all that apply.

Chemistry
1 answer:
Vadim26 [7]3 years ago
6 0

Answer:

a

Explanation:

because physical changes are reversible while chemical changes are irreversible

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Which property of aluminium makes it a suitable metal for soft-drink can?
mihalych1998 [28]

Answer:

Aluminium is malleable. It means it can be hammered or changed into other shapes easily. In this case, the shape of a soft drink can.

Explanation:

This is my answer.

3 0
3 years ago
A local water quality standard for a particular metal is 100 ppm. Which of the following describes what 100 ppm means?
Alborosie
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4 years ago
What was the problem with Rutherford's model? a. It described a nucleus. c. It could not explain the chemical properties of elem
schepotkina [342]
<span>What was the problem with Rutherford's model?


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<span> c. It could not explain the chemical properties of elements. </span>
7 0
3 years ago
How many moles of PC15 can be produced from 58.0 g of Cl₂ (and excess<br> P4)?
ludmilkaskok [199]

0.3268 moles of PC15 can be produced from 58.0 g of Cl₂ (and excess

P4)

<h3>How to calculate moles?</h3>

The balanced chemical equation is

P_{4}  + 10Cl_{2}  = 4PCl_{5}

The mass of clorine is m(Cl_{2}) = 58.0 g

The amount of clorine is n(Cl_{2}) = m(Cl_{2})/M(Cl_{2}) = 58/70.906 = 0.817 mol

The stoichiometric reaction,shows that

10 moles of Cl_{2} yield 4 moles of PCl_{5};

0.817 of Cl_{2} yield x moles of PCl_{5}

n(PCl_{5}) = 4*0.817/10 = 0.3268 mol

To know more about stoichiometric reaction, refer:

brainly.com/question/14935523

#SPJ9

3 0
2 years ago
Why do human sweat and dogs pants ? Explain the purpose and the reason why it is effected ?
SpyIntel [72]
As a result of temperature regulation within the body of endothermic animals, human bodies are much exposed to the environment than any other endothermic animal which causes human to sweat through their sweat glands and dogs has no sweat glands like that of human

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3 years ago
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