Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A sample of hydrogen was collected over water at 23oC and an atmospheric pressure of 735 mmHg. What is the pressure of the hydrogen gas collected in a 568 mL container?
A balloon filled with 27.3 mol helium has a volume of 612. L at 0.0°C and 1.00 atm pressure. The temperature of the balloon is increased to 33.0°C as it expands to a volume of 686. L, the pres
Calculate the ΔH for the reaction above using the data provided. (Hint: you need to calculate q rxn then convert it into kJ/mole)
What mass of water would you need to evaporate from your skin in order to dissipate 1.7 x 10^5 J of heat from your body? H2O(l) -> H2O(g) delta H vaporation = 40.7 KJ/mol.
The gas pressure measured at 20.0 degrees C is 1.95 atm. Assuming ideal gas behavior, how many grams of ammonia are in the flask?
Sulfuric acid reacts with aluminum hydroxide by double replacement. Determine the mass of each product formed. Assume 100% yield.
Solution contains FeCl3 = 0.015 M and NaOH = 0.010 M. Solution of FeCl3(aq) + 3NaOH(aq) -> Fe(OH)3(S) + 3NaCl(aq) gives precipitate Fe(OH)3. Qsp = [Fe3+] [OH]^3 = 1.5 * 10^-8 and Ksp of Fe(OH)3 = 1
How many grams of magnesium chloride could be formed from the rraction of 6.82 grams of magnesium with excess HCl?
In a reaction 82.00 g of sodium reacts with 74.00g of ferric oxide to form sodium oxide and iron metal. calculate the mass of solid iron produced.
Calculate the molarity of a solution of acetic acid made by dissolving 30.00mL of glacial acetic acid at 25 C in enough water to make 300.0mL of solution.
Why was the titration performed by the addition of permanganate solution to oxalate solution and not the other way around? Why was the experiment performed at an elevated temperature?
We have a solution that contains 0.022 M Ca2+ and 0.014 M Mg2+. We will use potassium hydroxide to selectively precipitate one of the ions, while leaving the other ion in solution.
Assuming that all the FeS2 reacts, how many grams of SO3 are produced when 20.0 g of the FeS2 reacts with 16.0 g of O2?
Identify the oxidizing agent in the reaction Mg+2HCl=H2+MgCl2, the generation of hydrogen gas in the laboratory.
An unknown element forms a yellow ion, XO . It forms a precipitate with silver ions. If 48.0 mL of a 0.250 mol/L solution of silver ions is added to a solution of the unknown ion, 1.856g of a red-br
Calculate the molality (m) of a 7.25 kg sample of a solution of the solute ethanol dissolved in the solvent water if the sample contains 53.2 mol of C2H5OH.
What is the final pressure in the container if 625 mL of helium gas at 105 mm Hg is compressed to 245 mL? Assume the temperature and the amount of gas are held constant.
If 35.46 mL of 0.05961 M Cr2O72- is required to titrate 28.00 g of plasma, what is the mass percent of alcohol in the blood?
How many ions will this compound create in aqueous solution ? What is the coordination number of chromium ?"
A urine sample contains 46.5mgL-1 of ethanol. The density of ethanol is 0.79gcm-3. What is the concentration expressed as %v/v.
A compound contains 14.5 g of magnesium and 3.5 g of oxygen. What is the mass percent of oxygen in the compound?
Aqueous solutions of iron(III) chloride and sodium hydroxide are mixed together to form a combined solution that is 0.015 M FeCl3 and 0.010 M NaOH.
If the usable energy in an 8.5 oz can were used to light a 100-watt (W) light bulb (1 W = 1 J⋅s), how many hours would the light bulb run from one can of these snacks?
If we have a solution that contains 0.022 M Calcium and 0.014 Magnesium and we have to use potassium hydroxide to selectively precipitate one of the ions, while leaving the other ion in the solution.
The element lithium consists of two naturally occurring isotopes with relative abundances of 7.42% and 92.58%. The atomic mass of one of these isotopes is 6.0135.