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
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:-)
a) Well, let's calculate the density of this balloon full of gas. Density is defined as the mass of an object divided by its volume. In this case, the mass is 3.66 grams and the volume is given as 2.56. So, the density would be 3.66 g / 2.56 ml. But something seems off here... balloons don't typically measure their volume in milliliters. Maybe the balloon is having an identity crisis? Nevertheless, let's calculate. The density comes out to be approximately 1.43 g/mL.
b) Ah, a classic water displacement problem with a twist! So, we have a 45.3 g sample and when placed in a graduated cylinder, the water level rises from 25.0 mL to 41.8 mL. Density, my friend, is again defined as mass divided by volume. This time, the mass is 45.3 grams and the volume is the change in water level, which is 41.8 mL - 25.0 mL, giving us a volume of 16.8 mL. Now, if we divide the mass (45.3 g) by the volume (16.8 mL), we get a density of approximately 2.70 g/mL.
To find the density in both scenarios, we need to use the formula:
Density = mass/volume
a) In this case, you are given the mass of gas (3.66 g) inside a balloon with a volume of 2.56 L.
To find the density, we can substitute the given values into the formula:
Density = 3.66 g / 2.56 L
Simply divide the mass by the volume to find the density of the gas in grams per liter (g/L).
b) In this case, you are given the initial and final volumes of water in a graduated cylinder caused by placing a 45.3 g sample.
To find the density, we can use the following formula:
Density = mass/volume
First, we need to calculate the volume difference:
Volume difference = final volume - initial volume
Volume difference = 41.8 mL - 25.0 mL
Volume difference = 16.8 mL
Now, we can find the density by substituting the given values into the formula:
Density = 45.3 g / 16.8 mL
Notice that the units of volume are in milliliters (mL) in this case. The density will be expressed in grams per milliliter (g/mL).
2.56 what. L?
b. density = mass/volume
mass = 45.3 g
volume = 41.8 mL - 35.0 mL = ?
Substitute and solve for density.