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The empirical formula of a compound is found to be P2O5. Experiments show that the molar mass of the compound is 560g/mol. What is the molecular formula of the compound?
If it takes 526 J of energy to warm 7.40 grams of water by 17 degrees Celsius, how much energy would be needed to warm 7.40 grams of water by 55 degrees Celsius?
Given the following balanced reaction, if a mixture of 1.50 mol of Al and 3.00 mol of Cl2 are allowed to react, how many moles of AlCl3 are formed, assuming a 75% yield?
A container consists of CO2 gas at a temperature of 15 C and at a pressure of .990 atmospheres. The volume of the container is 500 mL. How many grams of CO2 would be in the container? (1 liter equals 1000 milliliters.)
using a sample of river water sample analyzed for total inorganic carbon ,The river pH= 7.1 and an inorganic C concentration of 6.97 mg C/L.c
Determine how much heat is released when 14.8 kilo grams of Ethylene forms and The Hydrogen gas is collected over H2O(water) at a temperature of twenty five degree celsius and a total pressure =762 mmHg. (The ideal gas law constant R = 0.0821L*atm/..
Small helium-neon lasers emit 3.50 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
How many double bonds are present in the "best" resonance structure of the phosphate ion?
A sample of carbon dioxide gas occupies 617 mL at 0.812 atm and 11?C. What will the pressure be at a volume of 717 mL and a temperature of 16?C?Answer in units of atm
The reaction of fluorine of 7.6 grams with excess chlorine(Cl) produced 3.3 grams of ClF3. Determine the percent yield of ClF 3 was obtained??
What is the percentage chlorine by mass in the organic compound?" and got an answer of 37.1% Cl, which im pretty sure is right.
A chemist dissolves 0.9 g of an unknown monoprotic (one acidic H) acid in water. She finds that 14.6 mL of 0.426 M NaOH are required to neutralize the acid.
if the total amount of energy emitted by a carbon sample is 1.98x10^5 J, determine the number of carbon atoms present in the sample, assuming that each atom emits one photon
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