A balloon is filled with 35.0 L of helium in the morning when the temperature is 20.00 Celsius by noon the temperature has risen to 45.00 Celsius what is the new volume of the balloon

Which metal is too expensive to be used as a drink can?

What mass of limestone (in kg) would be required to completely neutralize a 15.5 billion-liter lake that is 1.7*10^-5 M in H2SO4 and 8.9*10^-6 M in HNO3?

List five ways you use chemistry at home or school?

2.18 Determine whether each of the following statements is true or false; if false, correct the statement to make it true: (a) The nucleus has most of the mass and compris- es most of the volume of an atom;

Why do atoms bond?

Density is not a physical property of mass. True False

Does skin have a nucleus true or false

Bacteria are only found in decaying matter. A. True B. False

Which is considered a chemical mutagen? tanning beds tobacco X-rays precious metals

Combining 0.380 mol Fe2O3 with excess carbon produced 13.7 g Fe Fe2O3 + 3C → 2Fe + 3CO What is the actual yield of iron in moles? What is the theoretical yield of iron in moles? What is the percent yield?