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a chemist burns 160g of Al in air to produce 260g of solid aluminum oxide. what is the percent...
The half-life of carbon-14 is 5,730 years. If you started with 100.0 g of carbon-14, how much would remain after...
the concentration of either the H+ ion or the OH- ion is given for three aqueouse solutions at 298 k.for...
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You have a fixed container with a volume of 5.00L that contains 35.0 g nitrogen gas (N2). If the temperature is 298 K, calculate the pressure in the container. R = 0.0821 L atm / mol K
Temperature units use the Celsius scale and the Kelvin scale. Describe both scales and discuss the differences between the two and the conversion process. What would be the boiling point of water at 1 atmosphere? Explain how you arrived at the answer? Sho
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The half-life of francium-212 is 19 minutes.How do i determine the number of minutes it takes for 8.0 grams of...
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Which of the indicated hydrogen in the following compounds is the least acidic? A) I B) II C) III D)...
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How much water would be needed to completely dissolve 1.69 L of the gas at a pressure of 740 torr and a temperature
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When 0.2235g of strontium reacted with 25.00mL of 1.168 M HCl, 63.18g of H20 (water) was displaced by the H2...
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Distinguish Jacques Charles described the direct relationship between temperature and volume of all gases at constant pressure. Should...
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what is the initial concentration of H+ ions if there is 10.0 ml of dilute solution in the flask and...
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Iodine-131 is a radioactive isotope. After 9.00 days, 46.0% of a sample of 131I remains. What is the half-life of...
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What is the mass of oxygen in 250g of sulfuric acid?
3.2g sample of air contains .00074g of hydrogen cyanide. determine concentration in parts per million, of the hydrogen cyanide in...
A 2.545g sample contains carbon, hydrogen and oxygen. It is subjected to carbon-hydrogen analysis and 3.703g of CO2 and 1.514g...
Calculate the molar concentration of each ion (Na+ and PO4 3-) in a aqueous Na3PO4 solution when 2.0 g of Na3PO4...
Before a sample of an easily fissionable isotope is used, It is refined by removing less fissionable isotopes of the...
how many liters of O2 can be made from 342g H2O2 if the density of O2 is 1.428?
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explain how the iron atom can form both an iron 2+ ion and an iron 3+ ion ?