CarmelBeard CarmelBeard

04-06-2015
Chemistry

contestada

Which change is exothermic?
(1) freezing of water(2) melting of iron(3) vaporization of ethanol(4) sublimation of iodine

Respuesta :

lulu1991 lulu1991

25-06-2015

The answer is (1) freezing of water. The energy of different status is increase from solid to liquid to gas. So the change of liquid to solid is exothermic. The other three are endothermic.

Answer Link

Otras preguntas

graph the line represented by the equation 2x + 3y = 8

Express the ratio in simplest form:1.25naira ratio 5naira

Solve the following equation for X 5x+7y=19 X= ?

What is the rate of change of the graph?a.1/32 gallons/mileb.1/64 gallons/milec.64 miles/gallond.32 miles/gallon

find an explicit rule for the nth term of a geometric sequence where the second and fifth terms are -12 and 768 respectively

Determine whether the following is a trinomial square.x² - 8x + 64-O NoYes

A pitcher throws a 0.14-kg baseball with a speed of 28.8 m/s. The batter strikes it with an average force of 5000 N, which results in the ball traveling with an

Indicate the concentration of each ion present in the solution formed by mixing the following15.0 mL of 0.304 M Na2SO4 and 34.6 mL of 0.200 M KCLNa+K+SO4^2-CL-

Item Price (dollars) $1,400 $2,400 $3,000 $4,400 Sales Tax (dollars) $112 $192 $240 $352 Based on the table, what is the rate of change? O The rate of change fo

Find the product of (x+3)^2