In which situation is the speed of the car constant while its velocity is changing? A)
The car travels down a straight track at 30 m
s
m
B)
The car travels around a circular track at 30
S
The car begins from rest and accelerates to 20
S
D)
m
The car begins traveling at 30
m
and slows to 15
S
En

Nitric oxide (no) can be formed from nitrogen, hydrogen and oxygen in two steps. in the first step, nitrogen and hydrogen react to form ammonia: n2(g) + 2 h_2(g) rightarrow 2 nh_3 (g) delta h = -92. kj in the second step, ammonia and oxygen react to form nitric oxide and water: 4 nh_3(g) + 5 o_2(g) rightarrow 4no(g) + 6 h_2o(g) delta h = -905. kj calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.