When designing a valid experiment, the scientist has to control many variables s

Question

When designing a valid experiment, the scientist has to control many variables so that only the one variable that is being tested changes from one trial to another.

To do a valid scientific comparison of the acidity of the "acid rain" from each of the three gases, which variable must you keep constant for each of the three solids in your experimental design?

a. mass

b. volume

c. density

d. moles

When designing a valid experiment, the scientist has to control many variables so that only the one variable that is being tested changes from one trial to another.

To do a valid scientific comparison of the acidity of the "acid rain" from each of the three gases, which variable must you keep constant for each of the three solids in your experimental design?

a. mass

b. volume

c. density

d. moles

Explanation / Answer

I suppose the density of the liquid remains constant, while we can vary the mass, volume and moles of the three gases in order to calculate or determine the acidity of the 'acid rain'.

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