It has many different uses like being used to make the tube of a vacuum cleaner and also can be used to make oil in space crafts.
The best thing for her to do next is go get an allergy test from the doctors to see if she’s allergic.
Answer:
Compound D is CH3OPO3 is the best answer
Explanation:
(2) is the only correct answer. (1) 5 grams of H2 is 2.5 mols of this gas, which would result at STP 22.4 * 2.5 Liters (according to Avogadro's law). 5 moles of O2 would result in 5 * 22.4 Liters, and (4) 5 * 10^23 molecules of CO2 (which is what I assume you meant) would be 5 mols, which would result in 5* 22.4 Liters.
(2) is your answer