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The heat of combustion of bituminous coal is 2.5 × 104 J/g. What quantity of the coal is required to produce the energy to convert 100. lb of ice at 0°C to steam at 100°C
What is the percent yield of ammonia when 150.0 g of nitrogen reacts with 32.1 g of hydrogen if the actual yield is 174 grams?
Calculate the concentrations of all species in a 0.840 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid
Which of the following are not soluble in water? Remember that the solubility rules apply to ionic compounds, but not necessarily to covalent compounds
How many moles of nitrate ions are present in a sample that contains 4.82 moles of chromium(III) nitrate, Cr(NO3)3
A trainee in a medical lab will be released to work on her own results agree with those of an experienced worker at the 95% confidence level
How many moles of nitrogen are needed to react with 42 moles of oxygen?
In the first 12.0 of the reaction, 1.8×10-2 of is produced in a reaction vessel with a volume of 0.260 . What is the average rate of the reaction over this time interval.
Draw the molecule by placing atoms on the grid and connecting them with bonds. If there is more than one answer, draw all o
The average distance between planet X and Earth is about 2.59 x 108 miles. How long (minutes) would it take pictures transmitted from a space vehicle on Planet X's surface to reach Earth
A sample of nitrogen occupies a volume of 546 mL at STP.What volume would nitrogen occupy at 177C under a pressure of 380 torr?
if iodine gas reacts with excess fluorine gas to produce 7.575 g of iodine penta fluoride gas, what was the pressure of the iodinee gas before reacting if it was kept in a 1.5L flask at 298 k
centered orthorhombic has two lattice positions one on the rectangular top and bottom face
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