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Use the radius of a sodium atom from the elements handbook to calculate the number of sodium atoms in a row 5.00 cm long. Assume that each sodium atom touches its two neighbors.
how much heat in is evolved or absorbed in the reaction of 2.28 grams of sodium na with water h2o express your answer
a buffer solution is formed by combining 50.0 ml of 0.022 m benzoic acid and 20.0 ml of 0.032 m sodium benzoate
A 10.00 mL sample of the resulting solution is transferred into an Erlenmeyer flask for a titration. How many grams of baking soda are present in the 10.00 mL sample?
How many grams of dry NH4Cl need to be added to 2.10 L of a 0.700 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.89? Kb for ammonia is 1.8*10^-5. mass of NH4Cl
2 dimethylcyclohexanone starting with hydrocarbons, ketones or esters of 4 carbons or less, benzaldehyde, monosubstituted cyclic ketones and any inorganic reagent.
Determine the [H3O+], [OH-], pH, and pOH for each of the following solutions. A solution of 1.65 x 10-4 M HCl
What would you expect to observe in terms of the angle of rotation if you were to double the concentration of a sample, but kept all other variables constant?
The resulting solution required 13.73 mL of 0.176 mol L?1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample. When Mg(OH)2 or Al(OH)3 reacts with HCl(aq), the products are a chloride..
What is the millimolar concentration of dissolved oxygen for a lake or stream under the partial pressure of oxygen and a temperature of 12?
What exactly is the reduction of alkynes? I just understand that it is a method for synthesizing alkenes. Why are the leaving groups for E2 reactions not as good as E1 reactions?
which solution would create the higher osmotic pressure compared to pure water- one prepared from 1.0g of nacl in 10 ml
To qualify to run in the 2005 Boston Marathon, a distance of 26.2 miles, an 18 year old woman had to have competed another marathon in 3 hours and 40 minutes or less. To qualify, what must a woman's average speed have been
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