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

Raphael graphed the system of equations shown. y = – 3 y = x – 0.8 What is the best approximation for

what\ would b the radius of a circle with a diameter of 8 inches\

The female reproductive parts of a flower are called a. petals. b. stamens. c. sepals. d. carpels.

who lead the rebellion against shi huangis harsh rules

The supreme Court ruled in in re Gault that people?

I will give 30 points to the one who can figure this out. Complete the following chart with the 6 forms of sum, esse and the English meaning for each Latin

Which Expression Is Equivalent to 486-9+6+3^3•2

Theresa earned scores of 88 points, 84 points, 88 points, and 91 points on four tests. What is the lowest score she can get on the fifth test and still finish w

4/y+3 + 5/y-6 = 9/y+4 . solve the equation

2. The table shows a quadratic variation. a. Determine the constant of variation b. Write an equation for the quadratic variation. x 2 4 6 8 y 2 8 18 32