How many minutes will it take for a car traveling 74 miles per hour to cover 6.50 kilometers?

                     3.27 minutes

Explanation:

                    To solve this problem we will first convert miles/hour to km/min. For this purpose we will require following reference conversions as;

                     1 Mile  =  1.60934 Km

And,

                     1 Hour  =  60 min

Therefore,

As,

                     1 Mile  =  1.60934 Km

Then,

                      74 Miles  =  X Km

Solving for X,

                      X  =  74 miles × 1.60934 Km ÷ 1 mile                      

                      X =  119.10 Km

Therefore,

                      119.10 Km were travelled in  =  60 min

So,

                      6.50 Km will be travelled in   =  X min

Solving for X,

                     X  =  60 min × 6.50 Km ÷ 119.10 Km

                     X  =  3.27 minutes

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

the answer is d. 74.02