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What volume of radon will be produced per hour at STP from 1.075 g of 226Ra? (t1/2 = 1599 yr; 1 yr = 8766 h; mass of one 226Ra = 226.025402 amu)?
Assume air in tank is mixed and that air is an ideal diatomic gas. For a heated tank what heat rate must be applied to keep the tank air temperature constant? For a perfectly insulated tank, what is the tank air temperature after 100 seconds? The ..
When taking a boiling point of a compound, why is the micro boiling point determined at the point when the last bubble has left the bottom of the bell and the liquid begins to rise in the bell
Given the initial rate data for the reaction A + B ? C, determine the rate law for the reaction.
Into what type of unit cell (i.e., simple cubic, face-centered cubic, or body-centered cubic) does this material crystallize? Be sure to fully support your answer. The apparent atomic mass is 120.5 amu. Remember that 1 amu = 1.660538783 × 10!24 g.
A solution is prepared by dissolving 18.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 11.00 mL sample of this stock solution is added to 50.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
During the late 1800's, hard rock miners replaced candles with carbide lamps for work in mine shafts. The lamps worked by dripping water onto calcium carbide that generated acetylene gas (H2C2) that was burned.
The average concentration of calcium ion in seawater is 412 mg of calcium ion per kg of seawater. What is the molarity of the calcium ion if the density of the seawater is 1.025 g/mL?
What was the molarity of the KOH solution if 23.2ml of 1.50 M H2SO4 was needed? The equation is 2KOH(aq) + H2SO4(aq)----->K2SO4(aq) + 2H2O(l)
A lake contains high concentrations of dissolved Mn^2+ and Fe^2+. a. What can you say about the concentration of dissolved nitrate. b. What can you conclude about the concentration of dissolved oxygen. c. What can you say about the form of any sul..
a cup of hot steaming coffee sits on the desk at 80 degrees celsius and is composed of mostly water with some things
What is the empirical formula of ascorbic acid, given that the pseudoformula is C3.41 H4.53 O3.41
Data for the decomposition of hydrogen peroxide at some set temperature T is include below. The rate law depends only on the concentration of H2O2.
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