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goldenfox [79]
3 years ago
11

There are four major methods of purification in the chemistry laboratory. Which of the given techniques is not one of the four m

ost common methods for separation and purification? distillation recrystallization extraction chromatography sublimation
Chemistry
1 answer:
RideAnS [48]3 years ago
6 0
Answer:

Sublimation

Explanation:

Sublimation is when a substance goes from a solid to a gas, without going through a liquid phase. This is not a method for separation and purification.
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A chemist determined by measurements that 0.030 moles of barium participated in a chemical reaction. Calculate the mass of bariu
schepotkina [342]

Answer: 4.1 g of barium precipitated.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar Mass}}

Given : moles of barium = 0.030

Molar mass of barium = 137 g/mol

0.030=\frac{x}{137}

x= 4.1 g

Thus there are 4.1 g of barium that precipitated.

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A. hex- Normally with 6, the prefix is hex-. For example a polygon having 6 sides is known as hexagon.
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How will you know whether the crystallization point is reached​
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Answer:

Explanation:

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8 0
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The absolute temperature of a gas is increased four times while maintaining a constant volume. What happens to the
weqwewe [10]

Answer:

The pressure increases by a factor of four.

Explanation:

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The pressure increases by a factor of four.

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