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In the reaction of Fe3O4 with carbon to form carbon dioxide and iron, the number of moles of carbon required to convert 23 g of Fe3O4 to products is
A. 0.05
B. 0.1
C. 0.2
D. 0.3
E. 0.4
If the solubility of a gas is 7.5 g/L at 404 kPa pressure, what is the solubility of the gas when the pressure is 202 kPa?
Calculate the grams of iron ion present in a 1.25 mL of a solution that required 2.20mL 0f 0.002115 M KMnO4 in a titration going to a faint pink endpoint.
Calculate the volume in mL of a solution required to provide .85 g of acetic acid (CH3COOH) from a .30 M solution
Calculate Eo, E, and deltaG for the following cell reactions Mg (s) + Sn2+ (aq) Mg2+(aq) + Sn(s) [Mg2+]= 0.045 M, [Sn2+] = 0.035 M
Multiple choice questions in organic chemistry - Which of the following statements are true about the processes of melting and freezing?
Type the half-cell reaction that takes place at the cathode for the iron-silver voltaic cell. Indicate physical states using the abbreviation (s), (l), or (g) for solid, liquid, or gas, respectively. Use (aq) for an aqueous solution. Do not forget..
The temp rises to 17.9 degrees celsius. Neglecting heat capacity of container, what is the specific heat of the metal? The specific heat of H2O(l) is 4.18 J/(g*degree Celsius)
A 1.3717-g sample of impure oxalic acid dihydrate, H2C2O4·2H2O, required 34.49 mL of 0.1211 M NaOH for titration to the phenolphthalein end point (both protons neutralized). Calculate the percent oxalic acid dihydrate in the sample.
An electrochemical cell was constructed from Sn/Sn2+ and Pb/Pb2+ with KNO3 as the salt bridge. The concentrations were Sn2+ =1.0M and Pb2+ = 0.1M.
Calculate K for 2NO(g)+O2(g)=2NO2(g) from the observation that when equilibrium is established at 500K, there are 0.190 moles NO2, 2.65x10^-4 moles NO, and 0.606 moles O2 in a volume of 0.759 liters.
One liter of O2, one liter of N2, and one liter of H2 are collected at a pressure of three atmospheres, each in a different container. The three gases are then forced into a single vessel of one-liter capacity,
Illustrate the structures of the 6 bromoalkenes (with the molecular formula C5H9Br ) that have a branched C chain, and that show neither chirality nor E,Z isomerism.
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