Chemistry 9
posted by Seastone .
a) A 2.56 balloon contains 3.66 g of gas. Find the density
b) A 45.3 g sample placed in a graduated cylinder causes the water level to rise from 25.0 mL to 41.8 mL . Find the density

2.56 what. L?
b. density = mass/volume
mass = 45.3 g
volume = 41.8 mL  35.0 mL = ?
Substitute and solve for density. 
Yeah sorry for typing wrong its 2.56 L balloon contains 3.66 g of gas.

How do i do it?

2.56 L x (1 mol/22.4L) = ? mols.
mols = g/molar mass. You know mola and grams, solve for molar mass. 
Thank you so much:)
Respond to this Question
Similar Questions

chemistry
if a 15.2 milliliter sample of meta is submerged in a graduated cylinder containing 53.7 milliliters of water, to what level on the graduated cylinders scale will the water level rise 
chemistry help ASAP
a graduated cylinder contains 20.0 ml of water. when 100.g of a brass cylinder were added to the graduated cylinder, the water level rose to 32.6 ml. given this information what is the density of the brass cylinder? 
Chemisty
you have 100.0mL graduated cylinder containing 50.0 mL of water. you drop a 124g piece of brass (density =8.56 g/cm^3) into water. to what height does the water rise in the graduated cylinder 
chemistry
aluminum has a density of 27g/cm3 if a chunk of aluminum with a mass of 16g is placed in a graduated cylinder partially filled with water how much will the water level rise 
chemistry
A graduated cylinder contains 155mL mL of water. A 17.0g g piece of iron (density = 7.86g/cm 3 g/cm^3 ) and a 23.0g g piece of lead are added. What is the new water level in the cylinder? 
Chemistry
When a 1.1 gram ice cube is placed into a 10.0 mL graduated cylinder, the level of water inside the graduated cylinder raises 1.20 mL. What is the Density of the ice cube? 
Chemistry
A graduated cylinder contains 56.3ml of water. A metal cylinder is dropped in the water and is completely covered by water. The diameter of the cylinder is 3.8 cm and the height of the cylinder in 5.4cm. What is the volume reading … 
Chemistry
Iron has density 7.87 g/cm3. If 52.3 g of iron is added to 74.5 mL of water in a graduated cylinder, to what volume reading will the water level in the cylinder rise? 
Chemistry
Calculate the density of an unknown sample of metal given that a 2.3504 gram sample of metal causes the water level in a graduated cylinder to rise from 33.5 ml to 35.2 ml. Show work 
chemistry
A graduated cylinder contains 17.0 mL of water. What is the new water level after 31.6 g of silver metal with a density of 10.5 g/mL is submerged in the water