What is the net ionic equation of 2H+ + SO42- + Ca2+ + 21 → CaSO4 + 2H+ + 21?
O A. H+ + SO42- + Ca2+ + 21 → CaSO4+H+ + 1
B. H2SO4(aq) + Cal2(aq) → CaSO4(s) + 2HI(aq)
O C. SO42- + Ca2+ → CaSO4
D. 2H+ + SO42- + Ca2+ → CaSO4 + 2H+

Which produce would best increase the amount of heat energy that is actually gained by calorimeter b

In a spacecraft, the following reaction occurs: co2(g) + 2lioh(s) -> lico3(s) + h2o(i) (i attached picture of equation) how many liters of carbon dioxide will 4 moles of lithium hydroxide (lioh) absorb? (one mole of any gads occupies 22.4 l under certain conditions of temperature and pressure. assume those conditions for this equation.) 45l 6.0l 3.0l 34l

Gymnast always perform on padded mats. how does the mats protect the gymnast