Question

To identify a diatomic gas (X2), a researcher carried out the following experiment: She weighed an empty 0.80-L bulb, then filled it with the gas at 1.60 atm and 21.0 ∘C and weighed it again. The difference in mass was 1.5 g . Identify the gas.

Answer #1

A) A 1.00 L flask is filled with 1.25 g of argon at 25 ∘C. A
sample of ethane vapor is added to the same flask until the total
pressure is 1.450 atm .
What is the partial pressure of argon, PAr, in the
flask?
What is the partial pressure of ethane, Pethane, in the
flask?
b)To identify a diatomic gas (X2), a researcher carried out the
following experiment: She weighed an empty 2.6-L bulb, then filled
it with the...

Part A
Calculate the density of oxygen, O2, under each of the following
conditions:
STP
1.00 atm and 35.0 ∘C
Express your answers numerically in grams per liter. Enter the
density at STP first and separate your answers by a comma.
density at STP, density at 1 atm and 35.0 ∘C=
g/L
Part B
To identify a diatomic gas (X2), a researcher carried out the
following experiment: She weighed an empty 3.9-Lbulb, then filled
it with the gas at 2.00 atm and...

Consider a process carried out on 1.00 mol of a monatomic ideal
gas by the following two different pathways. The first pathway
is A (3.00 atm, 20.0 L) to C (1.00 atm, 20.0 L) to D (1.00 atm,
50.0 L); and the second pathway is A (3.00 atm, 20.0 L) to B
(3.00
atm, 50.0 L) to D (1.00 atm, 50.0 L). In each case, the gas is
taken from state A to state D.
33. Calculate wAB.
a. 0...

1- A gas mixture is made by combining 6.9 g each of Ar, Ne, and
an unknown diatomic gas. At STP, the mixture occupies a volume of
15.60 L.
2- 1.85 g of an unknown gas at 21 °C and 1.10 atm is stored in a
1.65-L flask.
-What is the density of the gas?
-What is the molar mass of the gas?
3- An open flask sitting in a lab fridge looks empty, but we
know that actually it...

Part I The elementary gas phase reaction
(CH3)3COOC(CH3)3 -->
C2H6 + 2CH3COCH3 is carried out isothermally in a
flow reactor. The reaction rate constant at 500C is
1x10-4 min-1 and the activation energy is 85
kJ/mol. Pure di-tert-butyl peroxide enters the reactor at 10 atm
and 127oC and a molar flowrate of 2.5 mol/min. Calculate
the reactor volume and space time to achieve 90% conversion in;
a) PF reactor
b) CSTR reactor
c) Propose the diameter (Dt) and length (L)...

A weather balloon contains 222 L of He gas at 20. °C and 760.
mmHg. What is the volume of the balloon when it ascends to an
altitude where the temperature is -40. °C and 540. mmHg?
1
What volume does 12.5 g of Ar gas at a pressure of 1.05 atm and
a temperature of 322 K occupy? Would the volume be different if the
sample were 12.5 g of He gas under the same conditions?
How many moles...

1) The following reaction was carried out in a 2.25 L reaction
vessel at 1100 K:
C(s)+H2O(g)⇌CO(g)+H2(g)
If during the course of the reaction, the vessel is found to
contain 8.75 mol of C, 14.1 mol of H2O, 3.60 mol of CO, and 8.50
mol of H2, what is the reaction quotient Q?
2) The following reaction was performed in a sealed vessel at 782
∘C : H2(g)+I2(g)⇌2HI(g)
Initially, only H2 and I2 were present at concentrations of
[H2]=3.65M and...

Hw 30 #2 A matched pairs experiment is carried out, yielding the
following data: nD=50,x¯D=−0.2,sD=9.3
Is there evidence, at an α=0.08 α = 0.08 level of significance,
to conclude that there is a difference between the two sets of
measurements? Carry out an appropriate hypothesis test, filling in
the information requested.
A. The value of the standardized test statistic:
Note: For the next part, your answer should use interval
notation. An answer of the form (−∞,a) ( − ∞ ,...

A matched pairs experiment is carried out, yielding the
following data:
nD=56,x¯D=1.4,sD=7.9nD=56,x¯D=1.4,sD=7.9
Is there evidence, at an ?=0.07?=0.07 level of significance, to
conclude that there is a difference between the two sets of
measurements? Carry out an appropriate hypothesis test, filling in
the information requested.
A. The value of the standardized test statistic: ___________
Note: For the next part, your answer should use
interval notation. An answer of the form (??,a)(??,a) is expressed
(-infty, a), an answer of the form...

An experiment was carried out to measure the effect of growth
hormone on girls affected by a growth disorder called Turner’s
syndrome. A total 68 girls participated in the study. Half of the
girls were placed into the treatment group; these girls were given
the active drug. The other half of girls were placed into the
control group and were given a placebo with no active ingredients.
Their heights were measured at the time the hormone was first
administered and...

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