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

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!