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A piece of lead is placed into a graduated cylinder. The level of the liquid rises from 235 to 305 mL. What is the mass in grams of the lead if the density of lead is 11.3g/cm3?
Can an ether molecule be made out of a methanol or ethanol molecule? Why or why not? What is the structure for 1-Octanol & Propane-1,2,3-triol?
Metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas. If 17.1 g of Mg are heated with 9 g of H2O, what is the limiting reactant.
Compare a refrigerator set at four degree celcius and a freezer set at minus twenty degree celsius, both of which are operating in the room at the temperature of eighteen degree celsius.
A 86 gram solution of silver nitrate contains 14 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
Questions on chemical equations - Write a balanced equation for this reaction. Include the states of matter for each compound.
A sample of 0.2140 g of an unknown monoprotic acid was dissolved in 35.0 mL of water and titrated with 0.0950 M NaOH. The acid required 27.4 mL of base to reach the equivalence point.
The concentration of Fe2+ in a sample of water is 350 mmol/L At what pH will 99% of the Fe2+ be precipitated as Fe(OH)2? Ksp = 7.9 x 10-15
How much energy is released during the complete combustion of 372 grams of cyclohexane ?
A solution is prepared by adding 1.10 g of solid NaCl to 50.0 mL of 0.100 M CaCl_2. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.
How many protons are required to heat 200mL of coffee from 22 degrees Celsius and 64 degrees Celsius
What mass of Fe(OH)3 would be produced by reacting 75.0mL of a 0.0810M Fe(NO3)3 solution with 125 mL of a .150 M NaOH solution.
12.0 moles of gas are in a 8.00 L tank at 23.2 C. Calculate the difference in pressure between methane and an ideal gas under these conditions.
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