What is in a microscope the enlarges things so our eye can see them? lasers

lenses

glasses

Omg imgonnafailnfiedkla use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.