16. What is the law of conservation of mass?

If 1369 J of heat are released when 156 g of silicon cools from 37.5 oC to 2.50 oC, what is the specific heat of silicon? Is this endothermic or exothermic?

Calculate the percent difference between x2 and x4 according to the equation below. (Assume x2 to be the accepted value.) Record the calculation in your notes.  x2 = 100.4 kJ x4 = -100.4 kJ  %difference = experimental value - accepted value x 100%                                          accepted value

Suppose 2,240 joules are absorbed by 245 grams of water. If the initial temperature of water is 32.4°C, what is its final temperature?

A 12.42 g of water releases 523.9 J of heat. The initial temperature of water is 56.23 degrees celsius. Calculate the final temperature of the water. The specific heat of water is 4.184 J/ g degrees celsius.

Heat and energy are both measured in joules, yet are not quite the same thing. Explain what is the distinction between the two

Convert 51.7 calories to Joules.Answer in units of J.

5. heat

5.

OMe 1. NaOMe, MeOH 2. id H 3. H3O*, heat