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You are on a backpacking trip and need to make a fire. You have some batteries and a piece of foil from some gum. These should be sufficient to get the fire going. Why? Give the details of the chemical reaction that allows this to occur (including the balanced chemical equation.
Some of the formulas below could be either molecular or empirical formulas; however, some could only be molecular formulas. Which of the following formulas must be molecular formulas
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments.
In the reaction between glucose and oxygen 10.0 g of glucose reacts and 7.50 L of carbon dioxide is formed. What is the percent yield if the density of CO2 is 1.26 g/L?
Converting liquid water to solid ice releases 1.44 kcal/mol. How many kilocalories are released by freezing 2.5 mol of H2O? How many kilocalories are released by freezing 32 g of H2O.
If 13.0g of CCl3F is enclosed in a 1.2-L container, what mass of liquid will be present, when the vapor pressure of CCl3F at 300K is 856 torr?
A balloon is inflated to a volume of 8.3 L on a day when the atmospheric pressure is 652 mm Hg. The next day, as a storm front arrives, the atmospheric pressure drops to 620 mm Hg
A stock solution is prepared by adding 20 mL of 1.21 M AlCl3 to enough water to make 72 mL. What is the Al3+ concentration of 30 mL of the stock solution
calculating theoretical yield for this experiment. It is a dehydration synthesis where one mol of hydrated salt yields 3 mol hydrates and 1 mol of anhydrous salt.
sample of an oxide of tin was heated in the ari and 2.842 grams of tin (IV) oxide was obtained. What was the formula for the original oxide of tin?
The EPA limit for lead in the water supply is 15 parts per billion by mass. Calculate the number of lead ions present in 1.00kg of water that is at the EPA limit for lead.
triethylene glycol and heavy mineral oil are both high boiling, and high molecule solvents. What in their structural properties renders triethylene glycol
the pH of the solution is 9.15. After adding 16.55 mL of hydrochloric acid to your sample, the pH is 8.78. Calculate the first derivative of the function of the pH of your solution with respect to the volume of titrant added
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