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BigorU [14]
3 years ago
11

What is a frame reference

Chemistry
2 answers:
Vikki [24]3 years ago
5 0
Also known as reference frame, it is in dynamics<span>, system of graduated lines symbolically attached to a body that serve to describe the position of points relative to the body.</span>
8_murik_8 [283]3 years ago
5 0

Answer:

i think a measurements used when inertia is present

Explanation:

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a 160 milligram sample of a radioactive isotope decays to 10 kilograms in 12 years. what is the half life of this element
Shkiper50 [21]

Answer:

3 years

Explanation:

Given data:

Initial amount of sample = 160 Kg

Amount left after 12 years = 10 Kg

Half life = ?

Solution:

at time zero = 160 Kg

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2nd half life = 80/2 = 40 kg

3rd half life = 40 / 2 = 20 kg

4th half life = 20 / 2 = 10 kg

Half life:

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8 0
3 years ago
What is the total number of liters of NH3 formed when 20 liters of N2 reacts completely
goblinko [34]

Answer:

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On balancing it

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1 mol of nitrogen reacts with 3 mol of hydrogen to give 2 mol of ammonia.

Likewise,

20 litres of nitrogen reacts with 60 litres of hydrogen to give 40 litres of Ammonia.

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