A yellow balloon is filled with 0.5 mol of Ne and a red balloon
is filled...
A yellow balloon is filled with 0.5 mol of Ne and a red balloon
is filled with 1.0 mol of Ar. Both balloons are at 273 K and 1.0
atm of pressure. The volume of the red balloon is ________ ________
that of the yellow balloon.
A 3.0 g latex balloon is filled with 2.8 g of helium. When
filled, the balloon is a 32-cm-diameter sphere. When released, the
balloon accelerates upward until it reaches a terminal speed. What
is this speed? Assume an air density of 1.2 kg/m3 and a drag
coefficient for sphere of 0.47.
Consider the following dataset:
x1 Yellow Yellow Green Green Red Red Green Red Yellow
x2 5 2 10 4 3 7 2 5 4
y 1 3 7 5 10 18 4 8 3
(a) (3pts) Split the data into a train and test set where the
test set contains observations 1 and 7. Answer this by writing down
the two datasets.
(b) (2pts) Use Rstudio to estimate a model (which uses both x1
and x2 as predictor variables) using...
An empty rubber balloon has a mass of 0.0105 kg. The balloon is
filled with helium at a density of 0.181 kg/m3. At this density the
balloon is spherical with a radius of 0.300 m. If the filled
balloon is fastened to a vertical line, what is the tension in the
line?
A gas cylinder contains 2.30 mol He, 1.35 mol Ne, and 1.75 mol
Ar. If the total pressure in the cylinder is 2290 mmHg, what is the
partial pressure of each of the components? Assume constant
temperature.
P(He) = ?
P(Ne) = ?
P (Ar) = ?
A spherical balloon has a radius of 6.95m and is filled with helium. The density of helium is 0.179 kg/m3, and the density of air is 1.29 kg/m3. The skin and structure of the balloon has a mass of 960kg. Neglect the buoyant force on the cargo volume itself. Determine the largest mass of cargo the balloon can lift.
A flexible balloon contains 0.360 mol of an unknown polyatomic
gas. Initially the balloon containing the gas has a volume of 7.50
m3 and a temperature of 27.0 ∘C. The gas first expands
isobarically until the volume doubles. Then it expands
adiabatically until the temperature returns to its initial value.
Assume that the gas may be treated as an ideal gas with
Cp=33.26J/mol⋅K and γ=4/3.
What is the total heat Q supplied to the gas in the process? What...
A flexible balloon contains 0.335 mol of an unknown polyatomic
gas. Initially the balloon containing the gas has a volume of 6700
cm3 and a temperature of 25.0 ∘C The gas first expands isobarically
until the volume doubles. Then it expands adiabatically until the
temperature returns to its initial value. Assume that the gas may
be treated as an ideal gas with Cp=33.26J/mol⋅K and γ=4/3.
a.) What is the total heat Q supplied to the gas in the
process?
b.)...
A balloon is filled up completely with helium gas and left in a
room with a controlled temperature of 230C. After two days of being
in the same room, the balloon was found to have shrunk to half its
filled-up size. However, there was no leakage of helium gas from
the balloon during the two days. Explain what happened to the
pressure inside the balloon due to the change in the size of the
balloon. ? Use Boyle's Law to explain...
A balloon contains 2.0 mol
H2, 2.0mol
N2 and 6.0
mol He at 273.15K. If the balloon floats
at a location where air pressure is 0.78atm, what is the partial
pressure of N2 PN2 (unit: Torr)? Please write
your answer with 2 decimals, as 200.23