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Problem- A certain metal crystallizes in a body-centered cubic arrangement and has a density and atomic radius of 5.243 g/cm3 and 198.4 pm respectively. What is the atomic number of this element?
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The final temperature of the mixture is 27.0 degrees C. What is the heat capacity of the unknown substance. Express the answer in TWO significant figures.
How many moles of S8 are needed to make 0.600 moles of SF4? S8 + 8 Cl2 = 8 SCl2 ; 3 SCl2 + 4 NaF = SF4 + S2Cl2 + 4 NaCl
A hydrogen atom is removed from the first carbon atom of a butane molecule and is replaced by a hydroxyl group. Draw the new molecule formed.
What is the partial pressure of hydrogen and nitrogen when the gas mixture is composed of 8.00 g hydrogen and 56 grams nitrogen.
Problem- A sample of gas with an initial volume of 33.5L at a pressure of 755mmHg and a temperature of 325K is compressed to a volume of 15.6L and warmed to a temperature of 425K.
Does a precipitate form? Show all calculations. Calculate the concentration of each ion at equilibrium.
A solution is prepared by dissolving 25.8 grams of magnesium chloride (MgCl2) in 250.0 mL water. Calculate the molality of the chloride ion in the solution.
Calculate the partial pressures of CO2 and CO at equilibrium if 5.0 g of CO2 are introduced into a 10.0 L container and heated to 1200 K in the presence of 1.50 g of graphite (C (s)).
if the empty cylinder has the mass of 94.2g and the cylinder with water has the mass of 138.7 what is the mass of water
the volume of 4 cubic meters of gas is kept under constant pressure. its tempeture is increased from a minus 73 degrees celsius to 127 degrees celsius. What is the new volume of the gas?
An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3g, what is this substance's density?
water boils at 63.7 Celsius. What weight of ehtyl iodide would be carried over by 1g of steam during steam distillation?
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