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Gnoma [55]
2 years ago
6

An investigation is conducted into how the mass of magnesium metal reacting with hydrochloric acid affects the amount of hydroge

n gas produced.
Masses of 0.10g, 0.20g, 0.30g and 0.40g of powdered Mg metal are reacted with hydrochloric acid(HCl). The conical flask containing the reaction mixture of Mg and HCl is connected to another conical flask with a hose. The hydrogen gas produced by the reaction is collected in this conical flask. The greater the amount of hydrogen gas produced by the reaction the greater the pressure of the gas in the flask.
Answer:
A) what is the independent variable:
B) what is the dependent variable:
C) write a hypothesis for this investigation:
D) give 2 variables that should have been controlled for this investigation:

Chemistry
1 answer:
natta225 [31]2 years ago
3 0

An investigation is conducted into how the mass of magnesium metal reacting with hydrochloric acid affects the amount of hydrogen gas produced.

Masses of 0.10g, 0.20g, 0.30g and 0.40g of powdered Mg metal are reacted with hydrochloric acid(HCl). The conical flask containing the reaction mixture of Mg and HCl is connected to another conical flask with a hose. The hydrogen gas produced by the reaction is collected in this conical flask. The greater the amount of hydrogen gas produced by the reaction the greater the pressure of the gas in the flask.

Answer:

A) what is the independent variable:

B) what is the dependent variable:

C) write a hypothesis for this investigation:

D) give 2 variables that should have been controlled for this investigation:

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3 years ago
Corrections here: 1. When calcium reacts with water, the temperature changes from 18c to 39c
Ugo [173]

When calcium reacts with water, the temperature changes from 18c to 39c is an exothermic reaction as energy is releasing and increasing the temperature.

<h3>What is an exothermic reaction?</h3>

Exothermic reaction are those reactions in which energy is released when a reaction completes.

An example is burning of wood.

Thus, when calcium reacts with water, the temperature changes from 18c to 39c is an exothermic reaction as energy is releasing and increasing the temperature.

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3 0
2 years ago
What is the molar mass of an element?
Vesnalui [34]

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8 0
3 years ago
Describe how you would make 6.0 L of a 0.100 M KCl solution from a 4.0 M stock KCl solution.
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Answer:

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Fission and fusion reactions both release energy. However, only fusion reactions
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Answer:
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