A new computer chip contains 4.71×1022 Si atoms. Determine the mass (in grams) of the silicon present in the computer chip. Round to the tenths place.

Aresearcher finds that white bread contains more preservatives and has a higher moisture content than wheat bread. she designs a test to sermons whether the type of bread, white or wheat, affects the amount of mold growth. what must be done for the researcher to accurately measure the dependent variable?