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How many molecules of nitrogen are present in sample that fills a 10.0L tank STP?
What is the theoretical yield(in grams) of aspirin ,C9H8O4, when 2.00g of salicylic acid,C7H6O3, is reacted with4.00g of acetic anhydride
write the balanced neutralization reaction between sulfuric acid and potassium hydroxide in aqueous solution.
Calculate the number of moles of solute present in 75.0 g of an aqueous solution that is 1.50 % sucrose (C12H22O11) by mass.
burned in a bomb calorimeter, the temperature of the calorimeter (including its contents) rose by 4.701 °C. What is the heat capacity (calorimeter constant) of the calorimeter?
Suppose that a fully charged lead-acid battery contains 1.50 L of 5.00 M H2SO4. What will be the concentration of H2SO4 in the battery after 3.30 A of current is drawn from the battery for 8.00 hours?
Explain the atomisation method you would use in this instance and the advantages it has over alternative?
Water from a 5-mL pipet was drained into a weighing bottle whose empty mass was 9.974 g to give a new mass of 14.974 g at 26 ºC. Find the volume of the pipet
N2O reacts completely with an equimolar amount of NO2 to form elemental nitrogen and oxygen. How much N2 is formed in this process
In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72...
What volumes of 0.1000M Acetic Acid and 0.1000M Sodium Hydroxide should be mixed to prepare 1.000L of a buffer solution of pH 4.5 at 250C
A student found that her mixture was 15% NH4Cl, 20% NACL, and 75% SiO2. Assuming her calculations are correct, what did she most likely do incorrectly in her experiment?
a metallic solid with atoms in a face-centered cubic unit cell with an edge length of 385 pm has a density of 6.84
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