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My name is Ann [436]
3 years ago
8

What is the one variable that is changed in the experimental group called? the placebo the independent variable the control grou

p the dependent variable
Chemistry
1 answer:
BlackZzzverrR [31]3 years ago
4 0

Answer:

the independant variable

Explanation:

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Juanita dissolves 46 g of MgBr2 (molar mass: 184.11 g/mol) in 0.5 kg of distilled water. What is the molality of the solution?
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Formula: molality, m = n solute / kg solvent

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Molar mass of Mg Br2 = 184.11 g/mol

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Why is earth's surface warmer in the northern hemisphere when it is summer there
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3 years ago
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An empty beaker weighs 25.91 g. When completely filled with water, the beaker and its contents have a total mass of 333.85 g. Wh
Finger [1]

Answer:

The beaker holds 307.94  mL

Explanation:

As we know that the volume that beaker hold is the volume of water that occupied by it.

For this first we have to find mass of the water in the beaker

This can be calculated by the subtraction of beaker's weight from the weight of beaker and water.

     weight of water (m) = total weight - weight of beaker

Empty weight of beaker = 25.91 g

Weight of beaker with water = 333.85 g

Weight of water = 333.85 - 25.91 = 307.94 g

Density of water = 1 g/mL

We have

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The beaker holds 307.94  mL

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