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Get college assignment help at uniessay writers A 12.4 g sample of CaCl2 is dissolved in 103 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C·g.

The gas with an initial volume of 24.0 L at the

The gas with an initial volume of 24.0 L at the pressure of 565 mmhg is compressed until the volume is 16.0L. what is the final pressure of the gas, assuming the temperature does not change?.

PF5,CS2,BBr3 and CO3 2, which obeys and do not obey octet

PF5,CS2,BBr3 and CO3 2, which obeys and do not obey octet rule??

A solution of ethanol (C2H5OH) in water is prepared by dissolving

A solution of ethanol (C2H5OH) in water is prepared by dissolving 61.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 235.0 mL of solution. What is the molarity of the ethanol in this solution?

Iron reacts with chlorine gas as follows: 2 Fe (s)

Iron reacts with chlorine gas as follows: 2 Fe (s) 3 Cl2 (g) > 2 FeCl3 (s) How much FeCl3(s), in moles, is obtained when 8.00 moles Cl2 react with excess Fe?

A 25.00 mL sample of H3PO4 solution is neutralized by exactly

A 25.00 mL sample of H3PO4 solution is neutralized by exactly 54.93 mL of 0.04345 M Ca(OH)2. What is the molarity of the H3PO4 solution? a. 0.0636 M b. 0.09546 M c. 0.1432 M d. 0.2148 M e. 0.2897 M

Steel wool wetted with vinegar is sealed within a balloon inflated

Steel wool wetted with vinegar is sealed within a balloon inflated with air. After several hours, what happens to the volume of the balloon?

A 5.34 g sample of an aluminum alloy is re- acted

A 5.34 g sample of an aluminum alloy is re- acted with hydrochloric acid to produce alu- minum chloride and hydrogen gas. At a tem- perature of 298 Kelvin and a pressure of 1.03 atm, a volume of 1.53 L of hydrogen gas is col- lected. Assuming that the hydrochloric acid only reacts with the aluminum in the sam- ple, what is the percent of aluminum in the alloy sample? (Solid aluminum reacts with hydrochloric acid to produce aluminum chlo- ride and hydrogen gas). 1. 36.6 percent 2. 72.0 percent 3. 10.5 percent 4. 21.7 percent 5. 50.4 percent

Which statement is false? 1. The molecules of an ideal gas

Which statement is false? 1. The molecules of an ideal gas are rela- tively very far apart on the average. 2. The average kinetic energies of molecules of samples of different ideal gases at different temperatures are different. 3. The molecules of a gas move in unchang- ing curved paths until they collide with other molecules or the walls of their containers, ac- cording to the kinetic-molecular theory. 4. The average kinetic energies of molecules of samples of different ideal gases at the same temperature are the same. 5. At a given temperature, according to the kinetic molecular theory, the average speed of HF molecules is greater than the average speed of F2 molecules.

The composition of a compound used to make polyvinyl chloride (PVC)

The composition of a compound used to make polyvinyl chloride (PVC) is 38.4% C, 4.8% H and 56.8% Cl by mass. It took 7.73 min for a given volume of the compound to ef- fuse through a porous plug, but it took only 6.18 min for the same amount of Ar to diffuse at the same temperature and pressure. What is the molecular formula of the compound? 1. C4H5Cl6 2. CH2Cl 3. C2H3Cl 4. C3H2Cl 5. C4H6Cl2 6. C2H4Cl2

naphthalene, benzoic acid, and aniline. You can use H2O, HCl, NaOH,

Get college assignment help at uniessay writers naphthalene, benzoic acid, and aniline. You can use H2O, HCl, NaOH, and methylene chloride reagent/solvents for answering the question. Note benzoic acid and aniline forms a salt.

A canister is filled with 320 g of ice and 100.

A canister is filled with 320 g of ice and 100. rm g of liquid water, both at 0 rm{^{circ}C} . The canister is placed in an oven until all the rm H_2O has boiled off and the canister is empty. How much energy in calories was absorbed?

Suppose that 25 of each of the following substances is initially

Suppose that 25 of each of the following substances is initially at 29.0. What is the final temperature of each substance upon absorbing 2.25 of heat? gold? silver? aluminum? water?

how much energy is reqired to vapoeize 150ml of CH3COCH at

how much energy is reqired to vapoeize 150ml of CH3COCH at 25 C? the density of CH3COCH3 is 0.78g/mol and the enthalpy of vaporization is 29.1 kj/mo.

Consider the following statements: Z1) In voltaic cells, the flow of

Consider the following statements: Z1) In voltaic cells, the flow of electrons is spontaneous. Z2) In voltaic cells, the electrons flow in the external circuit (through the wire) from the anode to the cathode. Z3) In voltaic cells, the anode is the positive electrode. Which of these statements is(are) true?

When backpacking in the wilderness, hikers often boil water to sterilize

When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose that you are planning a backpacking trip and will need to boil 37ml of water for your group. What volume of fuel should you bring? Assume each of the following: the fuel has an average formula of 15% of the heat generated from combustion goes to heat the water (the rest is lost to the surroundings); the density of the fuel is 0.78 g/ml the initial temperature of the water is 25.0 *C and the standard enthalpy of formation of is -224.4 kJmol .

What is the molecular geometry of SbF4 ?

What is the molecular geometry of SbF4 ?

Ten-stubs Needleman, a compounding pharmacist of dubious reputation, meant to mix

Ten-stubs Needleman, a compounding pharmacist of dubious reputation, meant to mix diphenhydramine hydrochloride with aspirin, but he accidentally mixed it with phenacetin instead. To make matters worse, he put the mixture next to his morning coffee and accidentally added a teaspoon of sugar to the mixture. He has asked you to help him recover pure diphenhydramine from the mixture. Provide a flow chart for the isolation of diphenhydramine. Diphenhydramine is soluble in dichloromethane and hot water, and it is sparingly soluble in cold water, from which it can be recrystallized. Diphenhydramine hydrochloride is very soluble in cold water. The chemicals available are dilute NaOH solution, 5% NaHCO3 solution, 5% HCl solution, and dichloromethane. The equipment available includes all of the equipment available in this exercise. the equipment available include: a seperatory funnel vacuum filtration rotary evaporator anything else u need

If 110 {rm mg} of fluorine-18 is shipped at 8:00 A.M.,

If 110 {rm mg} of fluorine-18 is shipped at 8:00 A.M., how many milligrams of the radioisotope are still active if the sample arrives at the radiology laboratory at 1:30 P.M.

calculate the amount of heat liberated from 366 g of mercury

calculate the amount of heat liberated from 366 g of mercury when it cools from 77 C to 12 C.

calculate the amount of heat liberated from 366 g (in kj)

calculate the amount of heat liberated from 366 g (in kj) of mercury when it cools from 77 C to 12 C.

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