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if you burn 40.7 g of hydrogen and produce 364g of water, how much oxygen reacted?
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Mole is a quantity used to measure the tinier quantities such as atoms, molecules, particles. Each atom has a different mass. In a chemical equation, the atoms and molecules react in fixed proportions and their quantities can be determined through the concept of conservation of mass.
On average, cow milk is 4.7%(w/w) lactose. The molecular weight of this disaccharide is 342.3g C12H22011. Assuming milk has the density of water.
What maximum length of aluminum foil can be made from 1.10 kg of aluminum?
Calculate the Gibbs energy of the reaction (delta G rxn) at 25'C for the above rxn when all three gases are at 0.0010 atm. Kp = 1.8 x 10 ^ - 18
A sample of neon gas used in a neon sign occupies a volume of 1.50 L at a pressure of 630 torr. Calculate the volume of the gas if the pressure in the glass tube of the sign is 793 torr.
Organic chemistry mechanism and conceptual problems involving, Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.
A solid mixture contains MgCl2 and NaCl. When 0.5000 g of this solid is dissolved in enough water to form 1.000 L of solution, the osmotic pressure at 25°C
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If a raindrop weighs 65 mg on average and 5.1 105 raindrops fall on a lawn every minute, what mass (in kg) of rain falls on the lawn in 1.5 h?
A green leaf has a surface area of 3.00cm^2 . If solar radiation is 1040W/m^2 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504nm for solar radiation.
In the following reaction, how many moles of the non-limiting reactant are in excess if 4.4 mol Al are combined with 2.7 mol HCl
5.00 ml of a water sample was titrated for hardness with 4.15mL of 0.0200M EDTA. Write an equation for the reaction and calculate the hardness of the water in ppm
The density of tungsten is 19.35 g/cm3. A sample of tungsten is placed in a graduated cylinder containing 30.0 mL of water and the water level rises to 34.0 mL. What is the mass in grams of the sample of tungsten?
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