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How much heat energy would be needed to raise the temperature of a 15.0 g sample of iron (C = 0.448 J/goC) from 22.0 oC to 100.0 oC?
An archeologist finds a huge monolith in the desert. In order to estimate the weight of this object; he estimates the dimensions of the monolith and removes some chips from the rock with his hammer.
The compound aluminum chloride is widely used to control chemical reactions in industry. It is made by the following reaction: Al2O3(s) + 3C(s) + 3Cl2(g)→ 2AlCl3(s) + 3CO(g)
If you want to make 250 ml .100 M calcium chloride solution, how many grams of CaCl2 will you need.
In a butane lighter, 9.8 of butane combines with 35.1 of oxygen to form 29.6 carbon dioxide and how many grams of water.
A student heats 5.128 g sodium bicarbonate to completely decompose the sample to sodium carbonate. 3.2349 g of sodium carbonate was produced. Calculate the atom economy of this reaction.
how many milliliters of 0.54M HCL solution are needed to react completely with 4.6g of zinc to form zinc (II) chloride?
A mixture of Helium, Neon, and Nitrogen gases has a pressure of 1.348 atm. Determine what is the partial pressure of N2 in the mixture If the pressures of Helium and Neon are 0.124 atm and 0.996 atm, respectively.
what is the density of a piece of metal if it's mass is 201 g and its volume is 18.9 cm3
Calculate the pressure (in atm) exerted by 1.00 mole of acetylene at 125°C in a 20.0-liter container. The van der Waals constants for acetylene are: a = 20.0 L2 • atm/mol2, b = 0.100 L/mol.
Calcium fluoride, CaF2, is a source of fluorine and is used to fluoridate drinking water. Calculate its molar mass to four significant figures.
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
This is a fact that Bromine(Br) is larger than chlorine(Cl) but indication of equilibrium constant suggests that a bromo substituent has a less preference for the equatorial position than chloro substituent? Explain it briefly?
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