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if I want to find the uncertainty for a certain molar mass containing 4 atoms of Oxygen, do I multiply the error and the MM by 4: like this 4(15.9994 plus of minus .0003) = 63.9976 plus or minus .0012 (distribute the 4?)
or follow the rules for mult. of uncertainty which would be turning them into a percent, (.0003/15.9994 x 100) squaring the result, taking the square root and then do the mutiplication by 4? 63.9976 plus or minus .0075 % uncertainty?
Chlorine gas will react with nitrogen gas when dissolved in water to yield NCl (aq). At 298 K, the equilibrium constant for this reaction is 1.817x10-4. If I mix 1.0 g of chlorine and 1.0 g of nitrogen in a 2 L flask, what would be the equilibrium..
Calculate the E0 for the following reaction by using the standard reduction potentials data in your lab manual.
A weak acid (HA) is found to ionize 17.8% when mixed at a concentration of 0.3 mol/L. What is the value of Ka for this acid?
one mole of methane has a mass of 16.0 grams. How many grams of methane are needed to make 1.0 L of a 0.20 molar solution?
Each of the following contains ONLY ONE of the two chemicals indicated. what reagent would you use to identify which of the chemicals is present
Problem- Frequency of an electromagnetic radiation emitted by electric power lines is 60.0 Hz. Calculate the wavelength of this radiation in a) kilometers and b) micrometers.
Explain why is alcohol added to the initial mixture in the preparation of soap as well as what happens to it at the end of the reaction
Consider a glass of 262 mL of water at 28°C. Calculate the mass of ice at -15°C that must be added to cool the water to 10°C after thermal equilibrium is achieved.
The major isotopes of tungsten are 182W(26.32 %), 183W(14.31%0, 184W(30.67%), and 186W(28.62%) What is the atomic weight of W?
A sample of steam with a mass of 0.551 and at a temperature of 100 condenses into an insulated container holding 4.20 of water at 7.0. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture
how many liters of water can be made from 55g of oxygen gas amp an excess of hydrogen at a pressure of 12.4 atm amp a
a copper cube measuring 1.58cm on edge and an aluminum cube measuring 1.68cm on edge are both heated to 56.4 degrees c
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