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Luba_88 [7]
4 years ago
13

As water is cooled from 4°C to 0° C, its density

Chemistry
1 answer:
Juliette [100K]4 years ago
8 0

Answer:

Option B - Density increases

Explanation:

Density is defined as:

δ = mass / volume

When T°2 is > T°1, volume has been increased

As the volume increased, density has decreased.

↓δ = mass / volume ↑

In the situation above, temperature decreased from 4° to 0°.

The volume has been reduced, so the density has been increased.

↑ δ = mass / volume ↓

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How many grams of an 8% w/w progesterone gel must be mixed with 1.45 g of a 4% w/w progesterone gel to prepare a 5.5% w/w gel?
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w_2 = weight of another progesterone gel = 1.45 g

C_3 = concentration of resulting progesterone gel  = 5.5%w/w

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x=0.87

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