Can you help me on these plz i need help physics is not my best subject? Plz explain the reason and show work plz

1) so 7/5 to get the quarts used per week, so its 1.4 quarts used in a week, so 1.4×16= 22.4 for 16 weeks

2) 500 mL - 1 Gram. ; 250 mL - 0.5 gram

1) I can't make with imperial units I'm from europe

2) so 3 × 40mg= 120 mg so 0.12 gram

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

answera compound;