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A 130g piece of metal is heated to 286C and dropped into 87.0g of water at 26C, if the final temperature of the water is 58.3C, what is the specific heat of the metal (J/gC).
the feed to reactor contains only ethylene and hydrogen bromide. if the molar flow rate is 165mol/s, calculate the fractional conversion of the limiting reactant?
What is the density of gallium in grams per cubic centimeter at 25 if a 1.00 cube has a mass of 0.2133 ?
How does the addition of Fe(NO3)3 affect the concentration of FeSCN ion? What effect does the addition of Fe(NO3)3 solution have on the concentration of FeSCN?
Identify the spectator ion(s) in the following equation: HCl(aq) + Li2CO3(aq) → LiHCO3(aq) + LiCl(aq)
Dr. Brown has a radioisotope source containing 1.2 x 106 (also written as 1.2E+06) atoms of Plutonium-238 in 1985, how many atoms will remain in 352 years?
How many grams of cisplatin are formed from 54.4g of K2PtCl4 and 36.4g of NH3 if the reaction takes place in 95% yield based on the limiting reactant?
If the temperature changed from 25.2 °C to 30.3 °C, calculate the molar heat of combustion of methane in J/mol.
what volume of carbon dioxide at 22 degrees celsius and 781 mmHg could be absorbed by 327 grams of LiOH?
What minimum mass of succimer (C4H6O4S2) (in mg) is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 25 micrograms/deciliter.
Assuming the solution has a heat capacity of 4.18 J/°C · g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
The ions are evenly distributed throughout the ocean water. Which term or terms could be used to describe this sample of ocean water?
A galvanic cell consists of an Ag electrode in a 1.0 M AgNO3 solution and a Ni electrode in a 1.0 M Ni(NO3)2 solution. Calculate the standard emf of this electrochemical cell at 25ºC. (Use Tab
What is valance bond theory & why it is needed in presence of VSPR theory although VSPR theory had alresdy explained the structures?
During a breath, the average human lung expands by about 0.50 (L). If this expansion occurs against an external pressure of 1.0 atm, how much work in J}) is done during the expansion?
Calculate OH- of each aqueous solution using the following H3o+. Calculate the oh- of each aqueous solution with the following H30+.
how many mL of a 0.157M solution of KOH is required to react with 0.385g of CH3COOH according to following equation:
Sorbic acid, C5H7COOH, is a weak monoprotic acid with Ka = 1.7 x 10-5. Calculate the pH of a solution containing 11.25 g of potassium sorbate in 1.75 L of solution.
what advice would you give a company regarding environmental condition that would maximize the percentage yield of ammonia?
Regarding resonance structures of diazomethane, H2CN2, why wouldn't the following flow of electrons be valid: Starting with 2 double bonds between H2C=N1=N2 with N1 with a f.c. of +1 and N2 with 2
She concludes that the unknown element must belong in group 2 of the periodic table. State whether or not you think this result supports her conclusion, and why.
What is the solubility in moles/liter for copper(II) iodate at 25 oC given a Ksp value of 1.4 x 10-7. Write using scientific notation and use 1 or 2 decimal places (even though this is strictly inc
Freeze the water overnight. Look at the height of the ice compared to the line you drew the day before. What property of water do you observe?
What mass of natural gas CH4 must you burn to emit 272 kJ of heat?
A mixture of gases containing 21.0 g of N2, 106.5 g of Cl2 and 12.0 g of He at 14°C is in a 50.0-L container. What is the total pressure in the vessel?