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Dioxane (C4H8O2) has an enthalpy of fusion of 145.8 J g-1 and its melting point temperature is 11.0 degrees Celsius. At 11.0degrees Celsius into liquid dioxane calculate how much heat is needed to
The medicinal thermometer commonly required in homes can be read to +/-0.1 degrees F, whereas those in the doctor's office may be accurate to +/- 0.1 degrees C.
Determine the number of atoms are contained in one unit cell of metallic tungsten if it forms a face centered cubic unit cell?
Radium-226 has a half life of 1600years, which undergoes alpha decay. Determine the numbers of alpha particles are emitted in 5 min by a 10 mg sample of Radium-226?
What percent of the crude molecules contain the sulfur, supposing that each molecule can contain either zero or one sulfur atom?
Phosphorite is a mineral that contains Ca3(PO4)2 plus other non-phosphorous-containing compounds. Find out the maximum amount of P4 that can be formed from 1.0 kg of phosphorite if the phosp
At 760 mm Hg a solution of glycerol (C3H5(OH)3) in the 937 g of water had a boiling point of 104.7 degrees Celsius. Determine how much of glycerol is in the solution?
Explain what will be the concentration of ethanol in % v/v if a 250 mL solution of ethanol in water is prepared with 4mL of absolute ethanol.
Do you think you could carry 2.80 cubic ft? If the gold has a density of 19.3 g/cm3, Explain how many pounds does 2.80 cubic feet of gold weigh? [453.6 g = 1 lb, 2.54 cm = 1 in, and 1 ft = 12 in.]
Write down a comprehensive mechanism for the dehydration of 1-methyl-1-phenylethanol with H3PO4 at 100 deg. C. Show all the intermediates in the reaction pathway with appropriate charges.
Explain why a 50/50 mixture of dichloromethane is and ethanols are added to the crushed analgesic tablets before being examined through the thin layer chromatography.
Determine the amount of KHP in grams that is required to make a .1000 M solution in a 250 mLvolumetric flask.
A cylindrical tube 3.5cm in diameter and 11.5cm high is used to collect the blood samples. Determine the number of cubic decimeters of blood can hold (V of a cylinder = pi r2h)?
Molybdenum has a BCC crystal structure having the atomic radius of 0.1363nm and an atomic weight of 95.94 g/mol. Calculate the theoretical density and compare it with the experimental value which i
Determine the numbers of Na+ and Cl- ions are there in a single grain of salt from a salt shaker? Suppose the grain is cubic in the shape and having the edge dimension of 0.5 mm. which is having the
At a mass flow rate of 100 gallons minute the Water at 180 degrees F is flowing upward in a vertical section of a pipe. The water is released straight up into the atmosphere from the end of the pipe
Paint is being stored in a tank which is having 5 feet in diameter. The solids content is 30% and having the density of 1.2 gm/cm3. The liquid level of the paint is 4.75 ft and the water has a densi
Given a bcc structure produced by packing of hard spheres, calculate the largest sphere that can be introduced into the lattice without distortion and where is it located.
When the two hollow metal spheres are concentric with each other and the inner sphere has a potential of 88.8V and a radius of 0.138m. The potential of outer spheres is 77.9V and a radius of 0.138m.
Write the balanced equation for the given: Within the cylinders of a car's engine, one of the many components of gasoline, the hydrocarbon octane (C8H18), burns to form carbon dioxide, mixes with o
Suppose that the volumes of both the liquids are calculated at 20 degrees Celsius where the densities 0.9982 g/mL for water and densities are 0.7025 g/mL for octane.
The mass to use in the expression is the effective mass μ=mAmB /(mA+mB),where mA and mB are the masses of the individual atoms for the vibration frequency of a diatomic molecule.
Explain what percent yield of nitric oxide did the chemist acquire if a chemist used 252 g of NH3 and obtained 125 g of NO (actual yield) 4 NH3 (g) + 5 O2 (g) => 4 NO (g) + 6 H2O (g)
Analyze the pH needed to decrease the iron concentration in water supply to 0.03 mg/l if Iron is in Fe^3+ form and Iron is in Fe^2+ form
Using the mean volume of water and the standard deviation, determine the number of significant figures that is allowed by the precision inherent in your pipit technique by using the mean volume of s