Instant hot and cold packs are found in many
common stores and work when two substances
react. Depending on the substances that react,
the reaction either absorbs heat or gives off heat.
The enthalpy of a hot pack is
stant ce
because the reaction
teine
Shake and althe
DONE
3. Apply та ітај закона
4.
D
ose of ha

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

What is the molar mass of a gas that has density of 2.054 g/l

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)