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Enough of a monoprotic acid is dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 2.33. Calculate the Ka for the acid.
What is the heat of formation of NaOH which molarity is 2.02? If heat of formation of NaON, which molarity is M 1.00, -469.6, is heat of formation
The decomposition of potassium chlorate (KClO3) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 20.7 mol of oxygen?
Which of the following is a neutralization reaction?
how do you find the empirical formula of a compound if they don't give you percentages. For example, if they ask: what is the empirical formula for N2O4?
What are some of the differences between water obtained from a river that flows past farmland and water obtained five miles
What is the coefficient of the water? K2O + H2O What is the mass of 2.10 x 1021 atoms of copper, Cu? What is the molar mass of aspirin, C9H8O4?
An elemental analysis of X shows that the mass percentage composition of the compound is 26.86% C and 2.239% H, with the remainder being oxygen. A mass spectrum of X yields a molar mass of 90.0 g/mol. Write the empirical formula of X.
what are the molar concentrations for Na+, Cl-, OH- in the resulting solution? Assume a total volume of 100 mL.
Calculate the maximum [glucose]in/[glucose]out ratio that can be achieved by the plasma membrane Na+- Glucose antiporter of an epithelial cell when the concentration of Na+ inside the cell is 7mM
A gas has an initial volume of 2.75 L at temperature of 285 K. If the temperature changes to 380 K, what is the new volume of the gas if the pressure is unchanged?
Nitrogen (N2) reacts with hydrogen to give ammonia (NH3): N2 + 3H2 -> 2NH3 If 30 g of N2 reacts with excess hydrogen, what the mass of ammonia formed would be?
a sample of SO2 gas which weighs 0.81 grams has a volume of 1.20 liters when collected at 25 degrees celcius, what would be the pressure of the gas sample?
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