In the synthesis of barium carbonate from an alkali metal carbonate (M2CO3 where M is one of the alkali metals) a student generated 3.7 g of barium carbonate from 2.0 g of their alkali metal carbonate. M2CO3(aq) + BaCl2 (aq) --> 2MCl (aq) + BaCO3(s) How many moles of alkali metal carbonate were reacted? Question 3 options: 0.019 mol 0.038 mol 0.094 mol 2.3 mol

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

Pls! plant cells and animal cells were observed under a microscope. the characteristics of two cells are listed below. cell p: does not capture sunlight cell q: has cytoplasm but no chloroplast which statement about the two cells is correct? cell q also has a cell wall. cell q also has large vacuole. cell p also has a large vacuole. cell p also has a cell membrane.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg