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Give the conjugate base of the subsequent Bronsted-Lowry acids: Express as chemical formulas separated by a comma. 1. HCl, H2SO4 2. CN?, CH3NH2
Lead and iron are common alloying elements found in brass. Would the presence of these elements complicate the analysis of brass
Nitrogen is contained in a 300 ml vessel at 400 mm Hg and 10°C. How many grams of nitrogen are in the vessel?
Natural lithium is 92.58% lithium-7, with atomic weight 7.016, and 7.42% lithium-6, with atomic weight 6.015. What is the observed atomic weight of lithium as it occurs in nature?
In the preparatoin of a new pain reliever calls for 1.8 moles of an organic compound with fomula Na2(CH2CO2H)2 NCH2CH2(CH2CO2)2. How many grams of this compound should be weighed out for the reaction
A flask is charged with 1800atm of N2O4 (g) as well as 1.00 atm NO2 (g) at 25 C, as well as the flowing equilibrium is achieved. N2O4 2NO2, after equilibrium is reached the partial pressure of NO2 is 0.519 atm.
An unknown substance is empirically determined to be 40.00 percent carbon by weight, 6.67 percent hydrogen, and 53.33 percent oxygen. its molecular weight is roughly 55g/mol. determine the molecular formula and its correct molecular weight.
Consider one mole of a monatomic ideal gas at 300 K that undergoes a free expansion from a volume of 1 m^3 to 10 m^3. a) How much does the chemical potential of each molecule in a gas change?
What is the activation energy for a reaction whose rate is tripled by a temperature increase from 22.5°C to 58.0°C?
10.2 g of ice at -4.8oC is added to 164 mL of water at 50.1oC. What is the final temperature (oC) of the mixture
Write a balanced equation for each of the two steps of the reaction, namely: (1) the reaction between benzyltriphenylphosphonium chloride and sodium hydroxide
what mass of potassium bromide residue remains if 500.0 ml of 0.200 m potassium bromide solution are evaporated to
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.210 M HClO(aq) with 0.210 M KOH(aq). (a) before addition of any KOH (b) after addition of 25.0 mL of KOH (c) after addition of 40.0 mL of KOH
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