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Determine the chemical formula of each compound and refer to the formula to calculate the mass percent composition of each constituent element.
(a) nitrogen triiodide
(b) xenon tetrafluoride
(c) phosphorus trichloride
(d) carbon monoxide
Ammonia can be made by reacting calcium cyanamide (CaCN2) with water as shown: CaCN2 + 3 H2O => CaCO3 + 2 NH3. How many grams of calcium cyanamide are required to react with 190.0 g of water
calculate the change in entropy if 24.7 g of water at 78.4degf is mixed with 15.3 g of alcohol at 106degf. the specific
pure acetylsalicylic acid in water and titrated solution to equivalence point using 88.43 ml of .102 M NaOH (aq) Assuming that acetylsalicylic acid has only one ionizable hydrogen calculate molar mass of acid
What is the theoretical yield of aspirin if 165 of salicylic acid is allowed to react with 111 of acetic anhydride?
Briefly explain why caffeine will prefer the methylene chloride solvent to the water solvent? draw the structure for all 3 compounds?
What is the maximum mass of ammonia that can be produced from a mixture of 155.3 g of N2 and 35.98 g of H2? 2. Which element would be left partially unreacted? (enter nitrogen or hydrogen)
how does nitrobenzoic acid form as a by-product during the nitration of methyl benzoate and how is it removed?
What are some of the characteristics that we want to observe. What might be your initial hypothesis. How would you set up an experiment to test your hypothesis
Using a sample of 350. mL air is collected at 35 Celsius has a pressure of 550. torr. if it is allowed to expand to 425 mL at 57 Celsius then What pressure will the air exert?
Question- A researcher studying the nutritional value of a new candy places a 5.80-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.97 °C.
an element has hcp packing with a hexagonal unit cell. its density is 3000 kgm3 and the unit cell volume is 5.00 x
When no single electronic formula can be drawn for a stable molecule so as to maintain the octet rule and still fit the observed properties, the situation is best described in terms of
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