Question 2 To investigate a possible relationship between two factors, such as acidity and solubility, you must first identity the
variables involved in the experiment. Identify the independent variable, the dependent variable, and any possible
confounding variables within this experiment.

idk lol use google m8

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.

i think its both a and b