What would be the amount of methane produced (m3/day)
at standard temperature and pressures (OoC and...
What would be the amount of methane produced (m3/day)
at standard temperature and pressures (OoC and 1 atm)
for a reactor of 200 m3 with an inlet flow of 20
m3/day with a COD of 20,000 mg/L ? What would be the
methane produced at 35oC?
Consider the transfer of methane from benzene to water. What
temperature would be needed to make this process spontaneous? Also
discuss the implications of this when considering hydrophobic
interactions.
The temperature on a winter day is 23℉. (a) What is this
temperature in ℃? (b) In K?
In general, materials will expand with increasing temperature.
What is an important everyday exception to this rule?
Does it really help to run hot water over a tight metal lid on
a glass jar before trying to open it? Explain.
A steel rod has a length of 2.5 m. It is then heated by 44C°.
What is its new length?
A rectangular...
Calculate the volume of oxygen produced (measured at
standard temperature and pressure - STP) at the anode during
the electrolysis of sodium sulfate solution, if the electrolytic
cell is operated at a current of 2.50 amperes for 45 minutes.
F = 9.65 x 104 C mol-1 (or 96,500 C mol-1). The molar volume of
a gas at STP = 22.4 L mol-1 the two possible reactions at the anode
are;
O2(g) + 2H2O(l) + 4e-
4OH-(aq) E = 0.40V
SO42-...
What is the temperature on the winter day?
On a warm summer day (33 ∘C), it takes 4.70 s for an echo to return from a cliff across a lake. On a winter day, it takes 5.10 s . The speed of sound in air is v≈(331+0.60T)m/s, where T is the temperature in ∘C.
What standard deduction amount would the taxpayers in each
scenario be entitled to?
a. A single taxpayer, not head of household, with AGI of $23,493
and one dependent.
b. A married couple filing jointly with AGI of $39,945 and two
dependents.
c. A taxpayer filing married filing separately with AGI of
$68,996 and one dependent.
d. A qualifying widow, age 66, with AGI of $49,240 and one
dependent.
e. A head of household with AGI of $14,392 and two
dependents....
Determine what is the temperature of the hot combustion gas that
is produced in the engine of a butanol (C4H9OH)-burning bus that
uses ambient air for the combustion. Tip: write the balanced
stoichiometric equation for the combustion of butanol assuming air
is composed of 80% N2 and 20% O2 by volume, and derive the energy
balance of the combustion. Atomic weights: C-12, H-1, O-16, N-14.
For butanol: cp = 2 kJ/kg/°C; cv = 1.75 kJ/kg/°C; heat released by
combustion, or...
1.When 2.18 g of methane burns in oxygen, 109 kJ of heat is
produced. What is the enthalpy of combustion (in kJ) per mole of
methane under these conditions?
A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 4.00 C, the resistance of the carbon resistor is 217.3 Ω. What is the temperature on a spring day when the resistance is 216.0 Ω?
Take the temperature coefficient of resistivity for carbon to be α = −5.00×10−4 C-1.
What would be one example that may demonstrate a non-normal
distribution of blood pressures? Would it have a particular type of
skew? Why or why not? Why would it look this way?