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if the initial water level in the graduated cylinder is 21.2 ml and the level rises to 27.7 ml after the object is placed in the cylinder, what is the volume of the object?
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Upon decomposition, one sample of magnesium fluoride produced 2.55 kg of magnesium and 3.99kg of fluorine. A second sample produced 1.40 kg of magnesium. How much fluorine (in grams) did the second sample produce?
One liter of nitrogen (N 2 ) and one liter of carbondioxide (CO 2 ), initially at one atmosphere pressure, are forcedinto a single evacuated 500 mL vessel. What is the total pressure, in atmospheres,if the temperature re ...
Aqueous potassium phosphate was mixed with aqueous magnesium chloride, and a crystallized magnesium phosphate product was formed. Consider the other product and its phase, and then write the balanced molecular equation f ...
a) Glucose is a carbonate that your body can burn for fuel. It is 40 percent C and 6.71 percent H by mass. The rest is O. What is the empirical formula of glucose b) The molar mass of glucose os 180.0 g/mol. what is the ...
What is the molarity, to the hundredths place, of 5.0 g HPO3 in 300. mL of solution?
Suppose 1.7 g of zinc is treated with 6.2 g of pure hydrogen chloride. What is the maximum mass (in g) of hydrogen gas that can be produced?
A 25.0-mL sample of 1.20 M potassium chloride solution is mixed with 15.0 mL of a 0.900 M lead(II) nitrate solution and this precipitation reaction occurs: 2KCl(aq) + Pb(NO 3 ) 2 (aq) -------> PbCl 2 (s) + 2KNO 3 (aq) Th ...
Hydrogen peroxide was catalytically decomoposed and 75.3 mL ofoxygen gas was collected over water at 25 degrees celsius and 742torr. What mass of oxygen was collected? (Pwater =24 torr at 25 degrees celsius)
For the molecule allene, H2 C = C = CH2, give the hybridization of each carbon atom. Will the hydrogen atoms be in the same plane or perpendicular planes?
What was the initial energy level of an electron if it was excited by a photon of wavelength 38.9µm and jumped to an energy level of 10?
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