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3 years ago

A change from one state of matter to another involves the transfer of

Chemistry

2 answers:

Alja [10]3 years ago

5 0

A heat because heat is the transfer of energy.

Alja [10]3 years ago

5 0

Answer: Option (a) is the correct answer.

Explanation:

Change in state of a substance occurs due to change in position of atoms by absorption or release of heat energy.

For example, ice is the solid state of water and when we keep it at room temperature then it absorbs heat from its surroundings. As a result, intermolecular forces of attraction between its molecules weaken.

Due to this particles or atoms gain kinetic energy and they tend to move away from each other.

Thus, we can conclude that a change from one state of matter to another involves the transfer of heat.

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A chemist encounters an unknown metal. They drop the metal into a graduated cylinder containing water, and find the volume chang

Mashutka [201]

Answer:

The density of the metal is 0.561 g/mL

Explanation:

The computation of the density of the metal is shown below;

As we know that

The Density of the metal is

$= \frac{mass}{volume}$

where,

Mass = 4.9g

Change in volume = 6.9 mL

Now place these values to the above formula

So, the density of the metal is

$= \frac{4.9g}{6.9mL}$

= 0.561 g/mL

Hence, the density of the metal is 0.561 g/mL

We simply applied the above formula so that the correct density could arrive

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3 years ago

se tienen 10 litros de nitrogeno gaseoso bajo una presion de 560 mm Hg. Determina el volumen del nitrogeno a una presion de 760

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Answer:

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2 years ago

What do we call atoms of the same elements with different mass numbers?

kakasveta [241]

Atoms of the same element with different mass numbers are called isotopes

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2 years ago

2NH4Cl(aq) + Ba(OH)2(aq) -> BaCl2(aq) + 2NH3(aq) + 2H2O(1)

Akimi4 [234]

How do I answer that.

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3 years ago

Which formula correctly represents the product of an addition reaction between ethene and chlorine?

Serjik [45]

The formula that correctly represents the product of an addition reaction between ethene and chlorine is C2H4Cl2
Addition reaction occurs when an atom is added to a compound that has a double bond or triple bond (unsaturated hydrocarbons). Unsaturated compounds are associated with addition reactions. For example Ethene is an example of unsaturated hydrocarbon; when reacted with chlorine gas , chlorine atoms are added to each carbon atoms.

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3 years ago