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Consider a mixture of potassium chloride and potassium nitrate that is 43.2% potassium by mass. What is the percent KCL by mass of the original mixture?
Answer and Explanation please.
Label the regions, and describe what will be observed when liquids of compositions aand bare cooled to 200 K.
calculate the expectation value ltrgt for the 3p state of the hydrogen atom. would ltrgt be greater or smaller for the
For the reaction below, Kc=4.50x10^11 at 25oC. A(g) + 2B(g) C(g) In an experiment, 1.00 mol A and 1.00 mol B are combined in a 1.0L reaction vessel. What are the equilibrium concentrations of A, B and C
Use Henry's law to calculate the concentration of oxygen in water you would expect at 25 degrees Celcius.
The half-life for the radioactive decay of is 5730 years. How long will it take for 20% of the atoms in a sample of to decay. If a sample of initially contains 1.1 of , how many millimoles will be left after 2285 years
A mercury mirror forms inside a test tube by the thermal decomposition of mercury(II) oxide. 2 HgO(s)-----> 2 Hg(l) + O2(g) delta H rxn = 181.6 kJ (a) How much heat is needed to decompose 505 g of the oxide
For each of the following acid-base reactions, calculate the mass (in grams) of each acid necessary to completely react with and neutralize 5.15 of the base.
Provide a clear and yet somewhat concise description of how solid-state chemical sensors work.
what is the annual cost of operation in a 70°F room if the door is opened 10 times a day with an average heat gain per opening of 200 kJ? How much would it cost to keep the inside at 35° F
find the wt percent of C and H. find the smallest integer ration of C:H in the compound
The specific heat capacity of the solution produced was 4.20J/g*Celcius, and final temp reached was 34.91 degrees c. How much heat was produced by the dissolution
To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 17.3 g, and its initial temperature is -14.4 °C.
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