Calculate the number of mol of helium in a 2.01-l balloon at 29°c and 2.71 atm of pressure. be sure to answer all parts. imol

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

What causes different colors to appear in the sky? the absorption of light by air molecules the reflection of light by bodies of water the greenhouse effect in earth's atmosphere the scattering and reflection of light by dust particles