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A 5.325-g sample of methyl benzoate, a compound used in the manufacture of perfumes, contains 3.758 g of carbon, 0.316 g of hydrogen, and 1.251 g of oxygen. What is the empirical formula of this substance?
a 35 mL sample of NaOH solution is titrated to an endpoint by 14.76 mL 0.4122M HBr solutio. what is the molarity of the NaOH solution?
How can we explain the ability of an electron to cross through a node, such as the nucleus, to occupy the region within an entire orbital?
How many grams of oxygen gas (O2) will it take to oxidize 1 pound of iron metal? Make sure to show the redox reaction and all work.
What is the effective concentration between the ends if you consider the characteristic ratio of dna?
for which Kp=2.00 at 20 C. A mixture of NO(g) at a partial pressure of 1.50 atm and NO2(g) at a partial pressure of 0.50 atm is allowed to come to equilibrium in a sealed container maintained at 20 C.
If 145 mL of 1.10 M KCl are diluted to 515 mL, what is the molarity of the final solution?
The HCl turns the indicator red and the NaOH turns the indicator purple, but what happens to the indicator when the 2 solutions are mixed? Also, is there a temperature increase with the reaction?
What mass of water (in grams) forms from the reaction of 2.58 L of hydrogen gas and 2.26 L of oxygen gas?
Every measurement has a measurement uncertainty. Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty.
The air we breathe is approximetly 20% oxygen. the reaction for the complete combustion of acetylene is 2C2H2 + 5O2 ------> 4CO2+ 2H2o
Calculate the net charge of Aspartic Acid. Its given that Aspartic acid has a pK1 COOH at 1.99 and also a pK2 NH3 group at 9.90. PKr Side Chain is 3.90 (COOH) How do i find the net charge?
A container holds 355 mL of a mixture of nitrogen and carbon dioxide gases. Calculate the partial pressures of each gas if the container is at 27.3oC.
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