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In a candy factory, the nutty chocolate bars contain 22.0 by mass pecans. If 4.60 of pecans were used for candy last Tuesday, how many of nutty chocolate bars were made?
In the electrolysis of a solution containing Ni2+ (aq), metallic Ni(s) deposits on the cathode. Using a current of 0.150 A for 12.2 min, what mass of nickel will form
With acid-catalyzed condensation of a molecule with two aldehyde groups that is suitable for forming 5- or 6-membered rings, are both carbonyls protonated right away at the same time
Phosphorus-32 decays by beta emission to form sulfur-32. How many half-lives have passed in the reaction shown here
What is the mass (in grams) of the precipitate when 7.32 g of iron(II) nitrate reacts in solution with excess sodium carbonate
A cylinder of oxygen gas contains 26.4 g of O2. Another cylinder, twice the volume of the cylinder containing oxygen (and at the same conditions of pressure and temperature), contains CO2 gas.
On being heated with potassium ethoxide in ethanol (70 degrees C), the deuterium-labeled alkyl bromide shown gave a mixture of 1-butene, cis-2-butene, and trans-2-butene. On the basis of your knowledge of the E2 mechanism, predict which alkene(s),..
Are we concerned with the amount of sample that we use in this experiment and list at least three pros and cons for using a small sample under 0.05g and a large sample over 2.0g
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
In the decomposition of hydrogen peroxide, the percentage yield of oxygen is 93%. What is the actual yield in grams of oxygen if you start with 100 grams of H2O2.
you have 100 ml graduated cylinder containing 50 ml of water. you drop a 154 g piece of brass d 8.56 gcm3 into the
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
What mass of NaOH can this buffer neutralize before the pH rises above 4.00?
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