How much Cu-61 (half-life about 3 hours) would remain from a 2 mg sample after 9 hours?

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

Determine the reaction and balance the following equations urgent due in the morning

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.