Calculate the volume occupied by one mole of hydrogen gas given that its density is 0.09 litres

What type of reaction is zn + cucl2 → cu + zncl2?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

Which element would mostly likely have an electron affinity measuring closest to zero