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What is the pressure of 170. mL of oxygen gas at 76.0°C and 170. mm Hg if the conditions are adjusted to 450. mL and 127°C? Assume the amount of gas is held constant.
a 0.0571g sample of platinum sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaSO4 precipitate weighed 0.0801g. Determine the formula of this sulfate of platinum. The atomic number of platinum Pt, is 78.
why is it that when kcl is dissolved water condenses on the outside of the beaker. Also, is condensation exothermic or endothermic
List the chemical names and number of atoms for each chemical for each of the following equations.
Determine the balanced chemical equation for this reaction. CaH18(g) + O2(g) > Ca2(g) + H2O(g) Enter the coefficients for each compound in order, separated by commas
Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2. What mass of zinc oxide is needed to react completely with 2.22 mol of carbon? Answer in units of g
Some plants require acidic soils for healthy growth. Which would be more productive to add to the soil in order to make it more acidic, Fe2(SO4)3 or Na2SO4, and why
A 500-liter tank contains air at pressure 300 kPa and temperature 500K. Calculate the mass of the air in the tank
The specific heats of ice and water are 2.09 and 4.184 J/g.°C, respectively. The heat of fusion for water is 334 J/g.
the volume of blood in the body of a certain deep-sea diver is about 5.63 l. blood cells make up about 55 of the blood
Tests on human subjects along the East Coast of the United States in 1965 and 1966, following the era of atomic bomb testing, revealed quantities of about 1.71 pCi of plutonium radioactivity (alpha radiation) in a test subject. How many disintegra..
When the protien is treated with cyanogen bromide, four peptides are obtained. When treated with trypsin, 15 peptides are obtained. What do these results suggest regarding the sequence of the protien? Please be as specific and detailed as possible..
K = 0.040 for the reaction below at 450 C. If the reaction starts with 0.20 M Cl2 and 0.20 M PCl3, what concentration of PCl5 will be present at equilibrium. PCl5(g) PCl3(g) + Cl2(g) a) 0.09 M b) 0.13 M c) 0.16 M d) 0.03 M e) 0.20 M
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