Which of the following statements is true?

a. in an endothermic reaction, the energy of the products is the same as the energy of the reactants.

b. in an endothermic reaction, the energy of the products is less than the energy of the reactants.

c. in an exothermic reaction, the energy of the products is the same as the energy of the reactants.

d. in an exothermic reaction, the energy of the products is less than the energy of the reactants.

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

A-of 75 cm by cm by 17.5 cm up. of is 2 kg a , in ,if it is in , kg/?

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points