A chemical reaction that takes in heat is called: exothermic endothermic a phase change

7. How many moles of H3PO4 are there in 658 grams of H3PO4?

According to charles's law, when the temperature of a gas increases at constant pressure its a. volume increases. b. mass increases. c. volume decreases. d. particles move more slowly.

What factors does a meteorologist using the trends method consider?

What is the atomic number of 232Th

The characteristic reaction for unsaturated hydrocarbons is substitution. True or False

The temperature of 15 grams of water increases by 3.0 degress. how much heat was absorbed by water?

What are the four types of stoichiometry problems?

100 ml oxygen at 1.75 atm and 200ml nitrogen at 0.6 atm are passed to a 500 ml vessel. Calculate the total pressure of the mixture in the vessel at same temperature

Which is the best metal to use in an alloy to increase its electrical conductivity

Ice does not need to melt into liquid water before it can return to the atmosphere as water vapor. a. True b. False