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Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitrogen monoxide, and water vapor. What mass of dinitrogen monoxide is present after 15.0 g calcium nitrate and 17.50 g ammonium fluoride react completely?
the volumes for both reactants were mistakenly and unknowingly reduced by 5 in all of the beers law plot solutions.
What is the age of a rock whose Argon 40 / Potassium 40 ratio is 1.55? The half life of Potassium 40 is 1.28 x 10^9 years.
a 20-g mass of argon occupies 15.0 l at a pressure of 25 kpa . find the volume of the argon when the pressure is
Check all that apply Water is important to life because: - it does not dissolve certain substances - it causes brownian motion - it is colorless and odorless
A sample of unknown hydrate of FeCl3 weighs 8.693g. After heating the sample to constant mass, the remaining anhydrous salt weighs 5.216g. What is the experimental formula for the hydrate
Antacid tablets are made from a variety of compounds. Sodium bicarbonate, magnesium hydroxide and calcium carbonate to name a few.
You have 4 ml of a 0.35 M solution. You take 50 µl of the solution, and add 8 ml of water. How many ‘fold' have you diluted the solution. What is the concentration of the diluted solution
When a solution is formed by mixing solute B with solvent A, the vapor pressure of A falls to 80% of its value for the pure solvent. What is the composition of the solution
Calculate the work done in Joules by the reaction 2 Na + 2 H2O>>> 2NaOH + H2 when 0.23g of Na reacts with excess water in a container to form hydrogen gas at 300. K and 1.0 atm.
Two unknowns, X and Y, both having the molecular formula C4H8O, give the following results with four chemical tests. Propose a structure for Y consistent with this information. Bromine Na metal Chromic acid Lucas reagent Cpd X decolorizes bubbles ..
Suppose .050 moles of a substance reacts in 25.0 grams of water. If the water temperature goes from 22 degrees C to 26 degrees C, how much heat was given off? How much heat would be given off if one mole of the substance reacted
a backpacker wants to carry enough fuel to heat 2.9 kg of water from 27 degrees c to 100.0 degrees c. if the fuel he
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