What is the molecular formula of the compound that contains hydrogen and carbon and 100.0 cm^3 of it weighs 0.2290 g in standard state?

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

Which item is most likely part of the safety contract