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For the Following questions, consider the reaction between magnesium and oxygen. Mg(s)+O2(g) -> MgO(s) 1.How many grams of MgO are produced when 40.0 g of O2 react completely with Mg? 2. How many moles of MgO are produced when 0.20 moles of O2 react completely 3. How many moles of oxygen gas are needed to react with 4.0 moles of Mg?
Which of the metals in the cymbal alloys might be able to be quantitatively measured using UV-vis spectrophotometry. Select one or more
calculate the molarity of a solution of glycerol made by dissolving 69.000 ml glycerol at 15 degrees c in enough water
You wash dishes for a chemistry laboratory to make extra money for laundry. You earn 6 , and each shift lasts 75 . Your laundry requires 6 . How many shifts must you work if you wish to wash 10 of laundry
calorimeter calculate the final temp of calorimeter (both glass and toluene together) assuming no heat is lost to surroundings.
If barium needs a minimum frequency of 6.07x10^14 s-1 to eject electrons, calculate the kinetic energy of the electron emitted when barium is illuminated with a wavelength of 385 nm
Explain how these products are produced by showing the mecahnism involved. (draw).
Consider the ring structure of beta-D-glucose. It will give a positive test as a reducing sugar. How can that happen?
A 1.5991 g sample of a hydrocarbon is combusted to give 1.6918 g of H2O and 5.1661 g of CO2. What is the empirical formula of the compound
Using Heisenberg's uncertainty principle, calculate the uncertainty in the position of a 1.60 - mg mosquito moving at a speed of 1.50 m/s if the speed is known to within +/- 0.01 m/s.
The major product of the reaction is 2-ethoxy-2,3-dimethylbutane. In addition, 2,3-dimethyl-2-butene, 2,3-dimethyl-1-butene, and 3,3-dimethyl-1-butene are produced as minor products. Suggest a mechanism
which of the following reduces the solubility of calcium fluoride?a presence of uncommon ions such as na and cl-b
What mass of potassium bromide residue remains if 500.0 mL of 0.200 M potassium bromide solution are evaporated to dryness.
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