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sukhopar [10]
3 years ago
10

Explain how mixture melting points can be helpful in distinguishing between two compounds that have essentially the same melting

point.
Chemistry
1 answer:
grandymaker [24]3 years ago
4 0
Ice and Vaseline. Those are two melting compounds. When melting ice it turns into water and when melting Vaseline it melts into a oily liquid form. You can also freeze both of them and you can melt them again.
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Explanation:

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7 0
3 years ago
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Which of the following polyatomic ions will form an ionic compound with a single sodium ion?
vaieri [72.5K]

Answer:

Option B, HCO3 1-

Explanation:

The valence of Sodium ion is +1 and the valence of HCO3 is -1. Thus, sodium ion has an extra electron to be donated to complete its outer shell  while HCO3 needs an electron to complete its outer shell

Hence Na will combine with HCO3 to form NaHCO3

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5 0
3 years ago
Help needed ASAP!!!!!!!
Airida [17]

Answer:

120 liters

Explanation:

From the question,

Applying boyles law

PV = P'V'................ Equation 1

Where P = initial pressure, V = Initial Volume, P' = Final pressure, V' = Final Volume.

make V' The subject of the equation

V' = PV/P'............. Equation 2

Given: P = 2 kpa, V = 60 liters, P' = 1 kpa

Substitute these values into equation 2

V' = (2×60)/1

V' = 120 liters

Hence the right option is A. 120 liters

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Nutka1998 [239]
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Pls help I need the answers
iren [92.7K]

Answer:

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Explanation:

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3 years ago
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