3 years ago

What 3 characteristics of matter does chemistry deal with?

1 answer:

3 0

Chemistry is concerned with:

1) Composition
The composition of matter helps determine how it will behave chemically and physically, and is studied in chemistry

2) Structure
The structure of a certain element or compound also governs how the substance behaves, making it another vital aspect of chemistry

3) Behavior
The behavior of substances is studied in order to have explanations presented for it, expanding our understanding.

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22.4 L of hydrogen is taken in a cylinder at zero degree Celsius and at one atm. This gas is transferred to a cylinder of 11.2 L

geniusboy [140]

Answer:

2 Atm; 2.016 g

Explanation:

Changing the volume without changing the temperature or mass only changes the pressure. Volume and pressure are inversely proportional so halving the volume will double the pressure.

P = 1 Atm, T = 0 °C are "standard" temperature and pressure (STP). The volume of 1 mole of gas is 22.4 L under these conditions. That means the amount of hydrogen gas in the cylinder is 1 mole, so has a mass of 2.016 g.

After the volume reduction, the pressure is 2 Atm, and the mass remains 2.016 g.

7 0

3 years ago

Read 2 more answers

The first ionization energy of mg is 735 kj/mol. calculate zeff.

Novay_Z [31]

2.25 I believe

Hope this helped!
STSN

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3 years ago

In general, both cations and anions will __________ as you go down a group.

madam [21]

A because cation is positive and anion is negative evening it out at constant.