How many kilojoules of heat are absorbed
Calcium carbide (CaC2) can be made by heating calcium oxide (lime) with carbon (charcoal).? CaO(s) + 3 C(s) + heat As†' CaC2(s) + CO(g) Î"H = +464.8 kJ
How many kilojoules of heat are absorbed in a reaction in which 65.6 g C(s) are consumed?
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Why were the relative intensities of an element's spectral line not all the same?
As the frequency of the oscillator is varied over the range 500-1500 Hz , the wire is observed to set into oscillation only at frequency 860 Hz to 1290 Hz. What is the linear density of the wire??
Assume that air flows past the wing of an aircraft with streamline flow. If the speed of the flow past the upper surface is 120m/s, what is the required speed over the upper surface with a lift of 2000N/m3? The density of the air is 1.20kg/m3.
The heat of combustion of ethanol, C2H5OH(l) , is -1367 kj/mol. A batch of Sauvignon Blanc wine contains 10.6% ethanol by mass.
A 3500 kg statue is placed on top of a cylindrical concrete (Y = 2.3 x 1010N/m2) stand. The stand has a cross sectional area of 7.3 x 10-2m2 and a height of 1.8 m. By how much does the statue compress the stand?
Natural gas is primarily methane, CH4, and is used to heat homes. A typical home is approximately 2000 ft2 and the ceilings are 8 ft high. The following data may be helpful:
In a cookbook, a poultry thawing chart states that a 10-kg turkey takes 4 days to defrost in a refrigerator. Estimate how long it would take to defrost a 2-tonne Siberian mammoth from the same initial temperature in an industrial refrigeration hal
How much boiling water would you need in order to raise the bath to body temperature (about 37)? Assume that no heat is transferred to the surrounding environment.
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
Problem: An infant with known congenital heart disease presents with weight loss, tachypnea, and hepatomegaly.
For a research topic on evaluating the access to health services for commercial sex workers as a mixed method approach provide the methodology
The healthcare provider ordered a urine culture for a client. Which item would a nurse need for a urine specimen collection from an existing indwelling
The nurse practitioner (NP) evaluates a client with complaints of a burning sensation in the chest that often occurs after meals and is exacerbated
I am writing a dissertation topic on the utility of community based interventions in post exposure support to survivors of IPV in uMzingwane district
A 12-month-old child presents with fever of 100.9, lethargy, vomiting and tachypnea. The history is significant for recent hand-foot-mouth disease infection.