1311-07P April Post

When ΔH < 0 the reaction is...

• Exothermic

• Endothermic

• in equilibrium

• nonexistent

Using q=mcΔt Calculate the specific heat of water if 83.68 J is required to raise the temperature of 4.000 g of water by 5.000°C.

• 6.78 J/g ⋅ °C

• 1.28 J/g ⋅ °C

• 9.56 J/g ⋅ °C

• 4.184 J/g ⋅ °C

Unverse = system - surroundings

• True

• False

What is the Pressure and Temperature @ STP?

• 55.4 atm and 22.4 C

• 1 atm and 0 C

• 22.4 atm and 345 C

• 33.6 atm and 56 C

What is the Unit of R you work with when given atm, Liters, mols and Kelvin?

• 0.08206

• 273.15

• 8.314

• 1.987

In Charles law what are the units you are working with?

• mL, L, atm, mmHg or torr

• L, atm, mols and K

• atm, mmHg, torr, mL or L

• mL, L, C or K

In Boyles Law what stays constant?

• Volume and Temperature

• Pressure and Volume

• Temperature and Mole

• Moles and Pressure

1 atm = _torr = _ mmHg

• 240 torr and 240 mmHg

• 760 torr and 760 mmHg

• 760 torr and 240 mmHg

• 240 torr and 760 mmHg