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True [87]
3 years ago
7

A substance made up of two or more types of atoms that are NOT chemically combined is called a(n)

Chemistry
1 answer:
creativ13 [48]3 years ago
4 0

Answer:

pure substance

Explanation:

it does not combine to anything.

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1. What is the difference between accidental discoveries and scientific investigations?
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Answer:

the discovery will always need to be tested more where if you're investigating you should already be in a more controlled environment

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3 years ago
In an experiment, 107.9 grams of H2SO, is produced when 196.2 grams
Ipatiy [6.2K]

Answer:

54.99% yield

Explanation:

percent yield is just the amount you obtained over the amount expected times 100%.

(experimental value/theoretical value) x 100%

= (107.9 g/196.2 g) x 100%

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8 0
2 years ago
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Identify the following redox reactions by type. Check all that apply. (a) Fe + H2SO4 → FeSO4 + H2 combination decomposition disp
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Answer :

(a) displacement reaction

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Explanation :

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2CuCl_2\rightarrow Cu+CuCl_2

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(d) The given balanced chemical reaction is,

2Ag+PtCl_2\rightarrow 2AgCl+Pt

This reaction is a single replacement reaction or displacement in which the the more reactive element (Ag) replace the less reactive element (Pt).

7 0
3 years ago
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