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frez [133]
2 years ago
6

Name the two criteria that is used to determine if a substance is pure or not​

Chemistry
1 answer:
meriva2 years ago
3 0

Answer:

Melting and Boiling Point Determination

The physical properties of a substance can be used to establish its purity. These properties include the melting point and boiling point. Different substances tend to have different melting and boiling points, and any pure substance will have a specific melting and boiling point.

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Explanation:

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What are conditions of cis trans isomerism, justify with example?
Bezzdna [24]

Answer:

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3 0
2 years ago
I will give 15 points
zheka24 [161]

Answer:

B and C is your answer

Explanation:

Hope I helped, Sorry if I'm wrong

3 0
3 years ago
Read 2 more answers
If you were asked to convert 25 cg to the unit hg, which of the following would be the first fraction used in the conversion? on
zhannawk [14.2K]
We are asked to convert 25 cg to units of hg.

1 cg = 1 centigram = 10⁻² g
1 hg = 1 hectogram = 10² g

The options given are:

a) 1 hg/ 10² g
b) 10² cg/ 1 hg
c) 10² hg/ 1 cg
d) 10⁻² g/ 1 cg

To convert 25 cg to 1 hg, we could convert the 25 cg to grams first, then grams to hg.

25 cg · 10⁻² g/ 1cg = 0.25 g

Here we have converted our number from cg to grams. We can use another conversion of grams to hg to complete the conversion.

0.25 g · 1 hg/ 10² g = 0.0025 hg

Therefore, the first conversion we used was d) 10⁻² g/ 1 cg.
4 0
3 years ago
In the Table of Atomic Particles, various symbols have two numbers. The top number represents the atomic mass of the particle, w
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Atomic number and number of electrons.
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