Question

An empty beaker weighs 30.25 g

a) When completely filled with water, the beaker and its contents
have a total mass of 376.55 g. What volume does the beaker hold?
Use d =1.00 g/mL as the density of water.

b) How much would the beaker and its contents weigh if it was
completely filled with mercury? The density of mercury is d =13.5
g/mL..

Answer #1

An Erlenmeyer flask has a mass of 30.20g empty and 45.50g when
completely filled with water (density = 0.998 g/mL at 20C). When
9.40 grams of bronze (a homogenous mixture of tin and copper) is
placed in the filled flask, some of the water spills out and the
new mass is 52.40g. What is the density of the bronze in kg/m3?

A flask with a sample of gas at room temperature and pressure
weighs 97.4842 g. The same flask with air (density = 1.17 g/L)
weighs 96.8848 g. The same flask filled with water (d = 0.998 g/mL)
weighs 345.86 g. The pressure in the room is 0.989 atm and the
temperature is 22.2 °C.
1. Calculate the volume of the flask.
2. Calculate the mass of the air that the flask can hold.
3. Calculate the mass of the empty...

A balloon, which even weighs 0.934 g, is filled with helium at
normal atmospheric pressure (101.3 kPa) at room temperature (20.0 °
C) and is then volume 6.19 dm3. How much does the balloon weigh
when filled with helium?
( )g.
A balloon that weighs less than the equivalent volume of ambient
air will, according to Arkimede's principle, be lifted if it is
released, while one that weighs more will fall to the ground. How
much would the corresponding air...

A balloon and its gondola have a total (empty) mass of 2.0x10^2
kg. When filled, the balloon contains 900m^3 of helium at a density
of 0.183 kg/m^3. Find the added load, in addition to its own
weight, that the balloon can lift. the density of air is
1.29kg/m^3

stoichiometry of an acid
basRecord the following masses. a mass of empty beaker (g) 85.000g
b mass of beaker plus Na2CO3 (g) 87.000g c mass of Na2CO3 (g)
2.000g Data Analysis Convert the mass of Na2CO3 to moles, given its
molar mass (MM) of 105.989 g/mol. 2g/105.989gmol =
0.018869=0.01887
Experiment 2: Neutralization
Reaction Lab Results What was the acid in the reaction? HCL Data
Analysis How many moles of HCl did you add to fully neutralize the
Na2CO3 solution?
Experiment...

1) A metal weighs 31.16g, then when dipped in water its 29.52g.
What is its volume and density of the metal?
2) Britta suggests a possible source of error in this method:
At room temperature, the density of water is less than 1g/ml.
This means the calculated density is greater than the actual
value
Do you agree with Britta's reasoning? Is her reasoning
consistent with your results?

A sea lion (with lungs empty) is put on a scale when it is
completely submerged in water. The scale reads the “apparent weight
force” of the sea lion in water as 62.01-N. The sea lion has a mass
of 210.0-kg. The density of water is 1000 kg/m3.
Determine the density of the sea lion.
Select one:
a. 1000 kg/m3
b. 419 kg/m3
c. 1029 kg/m3
d. 1419 kg/m3

A ball floats in a tank filled with pure water
(ρwater = 1 g/cm3). The ball has a mass of
0.56 kg and a radius of 12 cm. What is the buoyant force on the
ball?
The buoyant force on the ball, FB =
Find the volume of the water displaced by the ball.
The volume of the displaced water, V =
How much force is needed to apply to the ball to completely
submerged it under the water? What...

Pre-Laboratory Assignment for Equivalent Weight of a
Metal
1) You are asked to make 133 mL of 1.294 M HCl starting with
6.0 M HCl.
a) The volume of 6.0 M HCl needed is (to 0.1 mL)
______________ mL
2) You standardize the "1.294 M" HCl by pipetting a known
amount of it into a flask and titrating to the phenolphthalein
endpoint with an NaOH solution of known concentration
Experimental Data:
Volume of "1.294 M" HCl used 4.32 mL
Concentration...

A student was assigned the task of determining the identity of
an unknown liquid. The student weighed a clean, dry 250-mL
Erlenmeyer flask. The student completely filled the flask with
water. He then proceeded to weigh the flask containing the
water.
Mass of 250-mL Erlenmeyer flask: 78.639 g
Mass of 250-mL Erlenmeyer flask and water: 327.039 g
Assuming the density of water is 1.00 g/mL at ambient
temperature, what is the exact volume (in mL) of the 250-mL
Erlenmeyer flask?...

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