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

the grinding away of rock by another rock particles is called what

A serum is being given to a patient to desensitize the patient for allergies. Each week the dosage is increased by 0.01 centiliters (cL). If the patient receive

Angela earns $6.25 per hour babysitting. Estimate how much she will earn if she babysits for 9 hours this weekend. Explain.

Why did Parliament pass the Test Act of 1673?

when it comes to government Americans value what principles

Differentiate between pseudoscience and science

a bridge is 500m long. A 100m long train crosses it at a speed of 30m/s. Find the time taken by the train to cross it.

what is the place value of 1 in the number 0.413

A company sells cookies in 250-gram packs. When a particular batch of 1,000 packs was weighed, the mean weight per pack was 255 grams and the standard deviation

Which state had the first Labor Day law passed on Feb. 21, 1887? A. New Jersey B. Oregon C. Colorado D. New York