What is the percent abundance of each isotope
Boron has two stable isotopes with masses of 10.01294 u and 11.00931 u. The average molar mass of boron is 10.81 u. What is the percent abundance of each isotope?
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A temperature of 100C condenses into an insulated container holding 4.50 g of water at 6.0C. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture?
if the solubility of AgNO3 at 40oC is 211 g per 100 g of water, what mass of this solute can be dissolved in 350 g of water at the same temperature?
Write the balanced equation for the reaction for Delta H is the lattice energy for potassium bromide
Write a plausible chemical equation to interpret at the atomic level, what you observed in the reaction of Lysol toilet bowl cleaner with 0.1 M AgNO3?
Calculate the pH of a buffer that is 0.158 M HClO and 0.099 M NaClO. The Ka for HClO is 2.9 x 10-8
At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
Equal mass of water and ethylene glycol are mixed. What is the vapor pressure of this mixture at 100.C? The molar masses of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol.
Imagine that you have a 5.00 L gas tank and a 2.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch.
Identify (name) each pathway, the enzyme whose activity determines how much glucose-6-P is metabolized by that pathway, one effector (regulatory molecule) which controls the activity of each enzyme, and how the effector affects the activity of the en
Calculate the change in entropy that occurs when 17.10 g of ice at -13.8°C is placed in 54.05 g of water at 100.0°C in a perfectly insulated vessel.
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