12 2. A hot air balloon has a volume of 3123 mº, and the temperature inside the balloon is 108.0 °C.
The pressure and outside temperature are 744 Torr and 20.0 °C, respectively. Assuming 28.9
g/mol, determine the amount of payload (kg) that could be lifted by this balloon if the mass of
the balloon is 144 kg. Hot air is the lifting medium in this case. A hot air balloon has a hole in
the bottom to heat the air. This means that both the pressure and the molar mass of air is the
same both inside and outside the balloon.
Py=nu

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

These questions are based on the attached photo. the experiment is about burning magnesium metal with oxygen. 1. write the balanced chemical equation for the reaction you are performing. 2. calculate the mass of magnesium metal used in each trial. o trial 1: o trial 2: 3. calculate the actual yield of magnesium oxide for each trial. o trial 1: o trial 2: 4. magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. o trial 1: o trial 2: 5. determine the percent yield of mgo for your experiment for each trial. o trial 1: o trial 2: 6. determine the average percent yield of mgo for the two trials. your company currently uses a process with a similar cost of materials that has an average percent yield of 91 percent. if the average percent yield of this process is higher than that, this could save the company money. what is your recommendation to the company? support your recommendation using your data, calculations, and understanding of stoichiometry gathered from this lab.

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !