2 years ago

A pure substance is matter that consists of matter with a composition that

Chemistry

2 answers:

sashaice [31]2 years ago

7 0

Is constant (matter that has a composition that is the same everywhere)

tigry1 [53]2 years ago

6 0

Answer:

A Pure substances is a substances that are made of only one type of atom or molecule and it possesses the following physical properties

1. well-defined melting

2. Well-defined boiling points.

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Please help!!

Zinaida [17]

1.B
6.D
D because t<span>he mass of one mole (molar mass) of helium gas is </span>4.002602 g/mol. 4.002602 * 5=20.01309. Rounded equals 20. So, the answer is D.20 g.

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2 years ago

Cl2(g) + 2kBr(s) ---> 2KCl(s) + Br2(g) Rewrite the equation and write the color of each chemical under its name. 2. What type

kolezko [41]

Answer:

Cl2(g) (green/yellow mix) + 2KBr(s) (white) ---> 2KCl(s) (violet) + Br2(g) (reddish brown)

This chemical reaction is a redox type.

Explanation:

Look at the oxidation state, when the number increase your element gets oxidated, when the number decrease, the elements it's getting reduced.

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2 years ago

What is the volume of a solid with a mass of 17.4 g and a density of 0.934 g /cm cubed?

Anvisha [2.4K]

Answer:

18.6 g/cm^3

Explanation:

17.4g/0.934g/cm^3

(divide)

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2 years ago

Debora [2.8K]

Explanation:

Their force of attraction is strongest in the middle of the magnet.

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Which of the following atoms has the same number of neutrons as 19F? (2 points)

Lelu [443]

I dont know the answer choices but if isotopes is there then go with Isotopes

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2 years ago