Ас [c]
[d]
dissolving powdered sulfur in carbon
disulphide
[UNN 2010/11]
CHEMICAL COMBINATION
Elements P has atomic number of 12 while
element Q has an atomic number 15.
Combination of P and Q gave a compound
PQ, the respective values of m and n are
[a]
2 and 2
[b] 2 and 3
[c]
3 and 2​

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:

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.