How many grams of CaH2 are needed to generate 145 L of H2 gas if the pressure of H2 is 823 torrtorr at 20 âC?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Plz ill give u brainliest which of the following steps is not likely to take place during cellular respiration? a. oxygen combines with carbon of simple sugar. b. energy molecule transfers energy to cells. d. energy is used up.