Question 1
a. how many grams of sucrose would you dissolve in
water for a total volume of 500 ml to make a 5%
(weight/volume) solution?

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

What does the symbol (–hfus) indicate in a phase change?