2. Which one of the following salts can be prepared from its elements by direct synthesis? A. Magnesium chloride
В. Copper (11) carbonate.
C .Potassium sulphate
D. Lead (II) nitrate

Which statement best describes the function of enzymes?

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

What volume of a 0.0606 m solution of strontium bromide is needed to obtain 0.340 mol of the compound? question 42 options: a)5.61 l b) 3.4 l c) 600 ml d) 1 l e) 178 ml