What technology did scientists use in the mid-1900s to map the mid-ocean ridge

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?