1. Standardization of KMnO4
Trial 1
Mass of H2C2042H20 (MW= 126 g/mol), g
0.25
Initial buret reading, mL
2.5
Final buret reading, mL
42.5
Volume of KMnO4 solution used, mL
5 pts
Moles of oxalic acid used
5 pts
Moles of KMnO4 used (refer to the equation)
5 pts
Molarity of KMnO4 solution
M
5 pts

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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.

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?