What mass of manganese(ii) chloride must react with sulfuric acid to release 52.5 ml of hydrogen chloride gas at stp?
mncl2(s)+h2so4(aq)→mnso4(aq)+2hcl(g )

What is the percentage composition of carbon in the compound ch4

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided