# Posts by Kaur

Total # Posts: 6

**Math**

A classmate writes a rate for Exercise 1 to express the degrees rotated in 2 minutes. Explain her error and give the correct rate. 1.25÷2/5÷2= 0.625÷2.5

**Chem**

b) -3887kj

**Chem**

what is the heat of reaction when 1 mole of gaseous hexane, c6h14 undergoes combustion as in following equation c6h14+19/2o2=6co2+7h2o a) -5221kj b)-38887kj c)-468.2kj d)+163.2KJ

**statistics**

a) the probability that at least 1 doesnt use a computer at work Because the question asks for at least 1 that doesn't we have to do the opposite complement. P(E)=1-P(complement) Probablity of not using computer(NUC)=1 - Probability of using computer P(NUC)= 1-P(UC) P(UC...

**maths**

22. A motor boat whose speed is 18 km/h in still water takes 1 hour more to go 24 km upstream than to return downstream to the same spot. Find the speed of the stream