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1. Your expense account permits you to spend $80.00 a day when you are on a trip. If you have a week-long trip to tiny country of Kratvia, where the exchange rate is 3.50 kratvels per dollar, explain how many kratvels can you spend during the week? (7 days)
2. An architect designs a room that has an interior measurement of 50.00 feet by 30.0ft by 10.0 ft. Explain what is the volume of the room in cubic ft?
Mole fraction of MgCl2 in an aqueous solution prepared by dissolving .400 moles of MgCl2 in 850g of water
Determine the number of electron pairs (both bonding pairs and lone pairs) on the iodine atom in the following.
The formula Co(NH3)5CO3Cl could represent a carbonate or a chloride: write the two formulas, draw the two structures and name them below.
the sludge has to be dried before it can be composted or otherwise handled.if sludge containing 70 water and 30 solids
Using the Henderson-Hasselbach equation, calculate the volume of 0.10 M Na2HPO4 and 0.10 M NaH2PO4 that would be required to make 100.0 mL of a 0.10 M (total phosphate concentration i.e. HPO4 + H2PO4) buffer with a pH of 6.91.
How many grams of nickel nitrate, Ni(NO3)2, must be dissolved to prepare 200 mL of a 0.152 M aqueous solution of the salt.
Draw the structural formula for ethanol, 2-propanol and 2-methyl2-propanol. Write the reaction between sodium bicarbonate and benzoic acid.
The combustion of carbon with excess oxygen forming carbon dioxide is exothermic. C(s) + O2(g) => CO2(g) ?Hrxn = -393 kJ If 9,494kJ of heat is needed from the combustion
What is the composition in mole fractions of a solution that has a vapor pressure of 33 at 20
Tetraphosphorus decaoxide reacts with water to form phosphoric acid, a major industrial acid. In the laboratory, the oxide is used as a drying agent.
a railroad car derails and spills 36 tons of concentrated sulfuricacid. the acid is 98.0 mass h2so4 and has a density
What is the minimum frequency of light (nm) that can be used to eject electrons from the surface of this metal via photoelectric effect
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