Why is Anton van Leeuwenhoek considered the "father of microscopy?" A: He was the first person to observe an animal cell through a microscope.
B: He invented the first microscope.
C: He was the best microscope-maker of his time
D: He published an instruction book on how to make microscopes.

The combustion of methane, ch4, releases 890.4kj/mol. that is, when one mole of methane is burned,890.4 kj are given off to the surroundings. this meansthat the products have 890.4 kj less than the reactants.thus, ah for the reaction = - 890.4 kj. a negative symbolforah indicates an exothermic reaction.ch (g) + 20 (g)> co2 (g) + 2 h0 (1); ah = - 890.4 kga) how much energy is given off when 2.00 mol of ch,are burned? b) how much energy is released when 22.4g of ch. areburned?

Which structure is a valid representation of a hydrocarbon molecule?

What statement about the energy of a phase change is true