What is a factor that is deliberately changed in an experiment

Chemistry

1 answer:

Brrunno [24]3 years ago

4 0

A factor that is changed in an experiment is called the Independent Variable.

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How many moles of LiOH are required to make 4.2 liters of a 0.98 M

ASHA 777 [7]

Answer:

4.12 mol

Explanation:

Given data:

Moles of LiOH required = ?

Volume of solution = 4.2 L

Molarity of solution = 0.98 M

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

we will calculate the moles from above given formula.

0.98 M = number of moles / 4.2 L

0.98 M × 4.2 L = number of moles

Number of moles = 0.98 M × 4.2 L

Number of moles = 4.12 mol (M = mol/L)

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Stacy runs a paper chromatography experiment using the same ink, but two different solvents.

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Answer:

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Explanation:

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Answer: C

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Choose the statement below that is TRUE. Question 7 options: The term "strong electrolyte" means that the substance is extremely

Setler [38]

Answer: A weak acid solution consists of mostly nonionized acid molecules.

Explanation:

Strong electrolytes are those solutions which undergo complete dissociation when dissolved in water. The dissociation of strong electrolytes is given by a right arrow.

Weak electrolytes are those solutions which do not undergo complete dissociation when dissolved in water. The dissociation of weak electrolytes is given by a rightleft arrow.

Weak acids are those substances which dissociate partially to give $H^+$ ions when dissolved in water. Thus most of molecules remain unionized in solutions.