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2 years ago

Is temperature beginning to rise a physical or chemical change?

Chemistry

2 answers:

Lelu [443]2 years ago

6 0

Answer:

If temperature increases, as it does in most reactions, a chemical change is likely to be occurring. This is different from the physical temperature change. During a physical temperature change, one substance, such as water is being heated.

Explanation:

marta [7]2 years ago

4 0

Answer:

the least of these are to get some good deals for a circle for your business

Explanation:

GG have been in which I was not have a chance of the square and it

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What is the chemical formula of calcium phosphate?<br> Hurry up

AURORKA [14]

Ca3(po4)2 is the answer

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2 years ago

What evidence from the experiment shows that conduction occurred? In your answer, be sure to include the materials involved in t

alisha [4.7K]

Answer:

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Explanation:

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Which of the following vertebrates evolved in the Carboniferous period?

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2 years ago

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The chemical equation below shows the formation of aluminum oxide (Al2O3) from aluminum (Al) and oxygen (O2).

Rufina [12.5K]

Answer:

Mass = 182.4 g

Explanation:

Given data:

Number of moles of Al₂O₃ = 3.80 mol

Mass of oxygen required = ?

Solution:

Chemical equation:

4Al + 3O₂ → 2Al₂O₃

Now we will compare the moles of aluminum oxide and oxygen.

Al₂O₃ : O₂

2 : 3

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Mass of oxygen:

Mass = number of moles × molar mass

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Mass = 182.4 g

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2 years ago

There are three sets of sketches below, showing the same pure molecular compound (hydrogen chloride, molecular formula ) at thre

RideAnS [48]

Answer:

The correct answer is - option C.

Explanation:

Given: the melting point of HCl is

-114.8 °C, which suggests that below this temperature HCl will be solid.

and, since the boiling point of HCl is - 85.1 °C. It is also suggested that above this temperature HCl will be gas, Therefore.

Solid -114.8 - Ordered arrangement

Liquid -85.1c - Less orderly arranged

Gaseous - Least orderly arranged

Thus, at —90 °C, HCl will be present 'in the liquid state, At — 1 °C, HCl will be present in the gaseous state and at -129 °C, HCl will be present in the solid-state. So, the molecules will be organized in a more orderly manner .

Thus, the correct answer is - option C

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3 years ago