Calculate the percentage by mass of oxygen in ammonium nitrate (NH4NO3) Relative atomic masses (Ar):
H= 1 N = 14
O = 16
Relative formula mass (M): NH4NO3 = 80

Apackage contains 1.33 lb of ground round. if there’s 29% fat, how many grams of fat are in the round? i got 175 g but the textbook says the answer is 91 g of fat. how?

Compare and contrast refraction of light and sound will give brainliest

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?