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allochka39001 [22]
3 years ago
8

TRUE or FALSE. adding a solute like sodium chloride to water will always increase the freezing point

Chemistry
2 answers:
Afina-wow [57]3 years ago
8 0
I think that is false but don't quote me
irga5000 [103]3 years ago
4 0
It lowers the freezing point, so false.
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what is the molecular formula of a compound with an empiricla formula of ch and a molecular mass of 78
Dovator [93]

Answer:

C6H6

Explanation:

We can obtain the molecular formula from the empirical formula.

What we need do here is:

(CH)n = 78

The n shows the multiples of both element present in the actual compound. It can be seen that carbon and hydrogen have the same element ratio here. We then use the atomic masses of both elements to get the value of n. The atomic mass of carbon is 12 a.m.u while the atomic mass of hydrogen is 1 a.m.u

(1 + 12)n = 78

13n = 78

n = 78/13 = 6

The molecular formula is

(CH)n = (CH)6 = C6H6

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