If 89.6 joules of heat are needed to heat 20 g of iron from 30 c to 40 c, what is the specific heat of the iron in j/cg

How many particles of water are there in 14 moles? How many moles of forks do you have if there are 1.4 x 1027 forks? How many molecules are in 23 moles of oxygen? How many atoms in 3.00 moles of water? How many molecules of methane do you have in 0.

What variables can be used to determine the pressure exerted by a gas?

How are bleach, hand soap, and lye alike? A) These substances have a nearly neutral pH. B) The substances are heterogeneous solutions. C) They have a high concentration of hydroxide ions. D) All the substances turn blue litmus paper red.

3) prove that the composition of soda (sodium bicarbonate) is 27.4% sodium 1.2% hydrogen 14.3% carbon 57.1% oxygen

What is 673.5 in scientific notation

Car Q and z are put though an endurance test to see if they can travel at 120 km/h for 5.0 hours. Each car has a 45-L fuel tank. Car z must stop to refuel after traveling for 4.2 hours. Car Q, however, travels for 5.4 hours before running out of gas.

What happened to the atoms in the heated metal ball so that it didn't fit through the ring?

A 3.00 L flexible container holds a sample of hydrogen gas at 153 kPa. If the pressure increases to 203 kPa and the temperature remains constant, what will the volume be?

Measurement of the functions of a nephron reveals a glomerular capillary pressure of 69 mm Hg, and a pressure in the capsular space of 15 mm Hg.

Water is unique because the density of it's solid is less than the density of it's liquid. Describe how life would be different if this weren't true