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3 years ago

The picture shows a balloon containing air.

Chemistry

1 answer:

hram777 [196]3 years ago

5 0

Answer:

The air particles are sped up and they are more spaced apart.

Explanation:

This is because when things are heated up the particles speed up and flow more freely causing them to be space apart.

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1. Antoine Lavoisier, a French scientist, established which principle?

pickupchik [31]

Answer: The correct option is d.

Explanation: Antoine Lavoisier is a french scientist who discovered the role of oxygen in the process of combustion and respiration.

He was famous for the law of conservation of mass.

This law states that the total mass the reactant will equal to the total mass of the products in a chemical reaction.

For example: Combustion of methane

$CH_4+2O_2\rightarrow CO_2+2H_2O$

Mass of the reactants = $[12+4(1)]+[2(32)]=80g/mol$

Mass of the products = $[12+2(16)]+2[2(1)+16]=80g/mol$

Hence, every chemical reaction will follow law of conservation of mass.

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3 years ago

if you want to know the identity of an unknown substance, what type of formula would you most likely want to know?

Leto [7]

Answer:

Smell: Most chemists can identify solvents by their distinctive smells (though this is a pretty bad idea). ¹

Melting point: If you've got very pure crystals, you can use their melting point to figure out which of several possible chemicals you've got.

Explanation:

I hope this helps and pls mark me brainliest :)

7 0

3 years ago

Read 2 more answers

Is a nylon string conductor or insulator

Black_prince [1.1K]

I would an insulator

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3 years ago

125) How many known elements are on the periodic table?

guajiro [1.7K]

Answer:

125) 118

126) 6

127) 9

128) Au

Explanation:

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2 years ago

Read 2 more answers

Elements in the first column of the periodic table belong to the alkali family. Name the alkali metals.

Makovka662 [10]

Lithium, sodium, potassium, rubidium, cesium, and francium

6 0

3 years ago