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Suppose you are given a 2.75 g sample of the orginal mixture. You isolated the pure metal from the other components and determined that the mass of the metal was 1.25 g. What is the percent by weight of the metal in the orginal sample?
at 25 C and 1.0 atm, .25 g of a gas dissolves in 1.00L of water. what mass of the gas dissolves in 1.00L of water at 25C and 3.0 atm
How many grams of camphor (C10H16O) are needed to raise the boiling point of 43.5grams of benzene by 2.10 degress Celcius? The Kb of benzene is 2.67degress Celsius/molality.
explain why one would be higher than the other? I'm confused as to the theory of this lab and need to know exactly why...Thanks! I have this lab next week and can't unnderstand what the concept is.
calculate the mass of sodium nitrate required to produce 7.00 grams of oxygen according to the following reaction: 2NaNO3 = 2NaNO2 + O2
You set off from the bottom of the pile in a space craft that can travel at the speed of light (3.00 x 10^8 m/s). How long, in years, will it take you to reach the top of the pile of pennies? Show all work.
The acid-dissociation constants of phosphoric acid (H3PO4) are Ka1 = 7.5 × 10-3, Ka2 = 6.2 × 10-8, 25) and Ka3 = 4.2 × 10-13 at 25.0 °C.
A layer of peat beneath the glacial sediments of the last ice age has a carbon-14/carbon-12 ratio that is 21.0% of that found in living organisms
how mamy moles of 1 chloroprppane (C3H7Cl) are produced if 352.grams of propane C3H8 react according to the equation
determine its (a) electronic geometry, (b) number of nonbonding domains on the central atom, and (c) polarity of the molecule. Remember, that molecules that have zero nonbonding domains on the central atom AND have all of the outer atoms the same ..
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0503 M phenol--a dilute solution.
what would happen if the bottle was labeled salicylic acid from benzene actually contained acetylsalicylic acid
calculate the value of ?Horxn for the following chemical equation: N2H4(l) + O2(g) ? N2(g) + 2 H2O(g)
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