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What max of water can be heated from 15 degrees C to 100 by burning this piece of cool
Earth's surface area is 5.10 x 10^8 km^2; its crust has a mean thickness of 35km and a mean density of 2.8 g/cm^3. The two most abundant elements in the crust are oxygen (4.55 x 10^5 g/t, where t stands for metric ton; 1ton = 1000 kg) and silicion (2.72 x 10^5 g/t), and the two rarest nonradioactive elements are ruthenium and rhodium, each with an abundance of 1 x 10^-4 g/t. What is the total mass of each of these elements in Earth's crust?
If 5.50 mol calcium carbide reacts with an excess of water, how many moles of acetylene will be produced.
How many moles of chloroform, CHCl3, are required to fill a 253-mL flask at 100.0°C and 940 torr?
what is the mass in grams of solid sulfur,S8 required to produce 25.50g of Cu2S(s) according to the balanced equation.
A sample of sodium reacts completely with 0.568kg of chlorine, forming 936g of sodium chloride. What mass of sodium reacted.
A gas occupies a volume of 2.45 L at a pressure of 1.03 atm. What volume will the gas occupy as the pressure changes to 0.980 atm.
Determine the limiting reactant and the numbers of moles of Cu will be formed If you place .092 mol of iron filling in a solution containing .158 mol of Copper sulphate,?
Calculate the concentrations of all species in a 0.750 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
Calculate the number of moles of H2O that will be produced by the reaction of .530 moles of solid Al(OH)3 with excess aqueous HClO3
Calculate the molar mass of X. 2.Identify the element symbol for X F2+2XBr -----> Br2+2XF
What is the value of work (w) when a piston of volume 0.2 L expands against an external pressure of 200 kPa to a volume of 3.4 L?
If 5.50 of the unknown compound contained 0.183 moles of carbon and 0.367 mol of H of , how many moles of oxygen, , were in the sample?
2NO(g) + O2(g) 2NO2(g) Given that we start with 0.035M NO(g) and 0.035M O2(g) AND end with 0.012M NO2.
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