A sample of nickel weighs 7.5425 g and has a density of 8.8 g/cm3. What is the volume with the correct number of
significant figures?

Ithink iit might be

Answercan utilize even low wind speed to produce electricity;

Radon-222 or rn-222 has a half-life of 3.82 days. to determine the fraction of an original sample of rn-222 that remains unchanged after 7.646 days, we calculate the amount of rn-222 remaining after 7.646 days and divide it with the original amount. using 1 gram as a basis and using half-life calculation methods, we can determine that  0.249 or 0.25  grams of rn-222 will remain, and thus the fraction remaining is 0.25 or 1/4.

The answer to this qustion is c