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If you have a solution of 0.15 M solution of HC2H3O2and 0.13M NaC2H3O2, a. What type solution is it? b. What is the pH
what is the mass of one mole of copper atoms? How many moles of copper atoms have a mass equal to the mass of a penny?
A mixture of gases contains 5.00 grams of Ne, 5.00 grams of O2, and 5.00 grams of CO2. What is the mole fraction of each gas. What fraction of the total pressure of the gas mix is due to each gas. If the gases are in a 25.0 L container at 25°C, wh..
a certain substance has a molar enthalpy of vaporization of 31.6 kj mol. How much of the substance is in a sample that requires 57.0kJ to vaporize?
If a buffer solution is 0.220 M in a weak acid (Ka = 8.5 × 10-5) and 0.550 M in its conjugate base, what is the pH
Draw both products of bromination of cholesterol which you obtained. What is the stereochemical relationship between them
Complete the two half reactions for the Pt electrode. Write two correct Nernst equations for the cell voltage.
what differences in product distribution would be expected for the elimination reactions of 2-bromo-2-methylbutane and 2-bromo-2,3-methylbutane wit hexcess potassium hydroxide in ethanol?
how many grams of methane ch49g must be combusted to heat 1.00 kg of water from 24.0 to 93.0 assuming h2ol as a product
what is the ionic equation of the following formulas nacl cacl2 alcl3 hcl koh h2c2o4 k2c2o4 ch3cooh h2o distilled h2o
A sample of diatomic gas has a density of 0.002061 g/mL at 1.8 atm pressure and 25.0 °C. Identify the gas.
volume of methane gas is cooled from 298 K to 149 L. If the pressure remains constant, what is the final volume?
A solution containing .2g of an unknown substance in 2.5 g of cyclohexane is found to freeze at 5.1 C what is the molar mass of the unknown substance
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