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1- How many grams of NH3 can be produced from 3.80mol of N2 and excess H2 ?
2-How many grams of H2 are needed to produce 10.76g of NH3 ?
3-How many molecules (not moles) of NH3 are produced from 3.16×10-4g of H2 ?
4-What mass of carbon dioxide is produced from the complete combustion of 7.10×10-3g of methane?
5-What mass of water is produced from the complete combustion of 7.10×10-3g of methane?
6-What mass of oxygen is needed for the complete combustion of 7.10×10-3g of methane?
A sample of gas occupies 250 mL at STP. What is the temperature if the gas expands to 1500 mL at a pressure of 0.500 atm?
Assume that each hamburger needs three pickle slices. What is the smallest number of packages of buns, packages of patties, and jars of pickles, respectively? Express your answer as three integers separated by commas.
Five different substances are given to you to be dissolved in water. Which substances are most likely to undergo dissolution in water
what will be the equilibrium concentration of CO.
What is the pH of a solution created by mixing 368.0 mL of 0.175 M Hydrochloric Acid, HCl, with 231.0 mL of 0.318 M Sodium Hydroxide, NaOH?
Approximately how many grams of KCl are there in 200 mL of a 4.0% by mass KCl aqueous solution? Assume that the density of solution equals that of pure water.
which weighs approximately 8.6 oz. Aluminum has a density of 2.70g/cm^3. What is the approximate thickness of the foil in millimeters?
How many photons will be required to raise the temperature of 2.3 g of water by 2.1k ? Water is exposed to infrared radiation of wavelength 2.7×10?4 cm . Assume that all the radiation is absorbed and converted to heat.
The most two most abundant elements in the crust are oxygen (4.55 X 10^5 g/t, where t stands for metric ton; 1 t=1000kg) and silicon (2.72 X 10^5 g/t), and the two rarest non radioactive elements are ruthenium and rhodium, each with an abundance o..
Calculate the wavelength in nanometers of the spectral line in the visible spectrum of hydrogen for which n1 = 2 and n2 = 3. What color is this line?
What functional groups are the key players in a condensation polymerization reaction. How so.
What effect will increasing the temperature have on the system? Fe3O4(s) + CO(g) ?? 3 FeO(s) + CO2(g) DH°= +35.9 kJ A) No effect will be observed. B) The reaction will shift to the right in the direction of products.
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