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Get college assignment help at uniessay writers A liquid unknown was found to be a insoluble in water and soluble in cyclohexane and alcohol; the unknown found to have a boiling point of 110 degree what is the substance? what could you do to confirm your answer?

How do you arrange PV=nRT to give equation relating pressure to concentration and use it to modify Beer’s Law to apply to gas pressure? Write a formula that relates absorbance to gas pressure.

Consider two empty containers A and B whose volumes are 10 mL and 20 mL, respectively. You now put 1 mL of liquid H2O into each container and adjust the temperature of each container to 20◦C. The gas pressure in container B is found to be 17 torr. What is The gas pressure in container A?

It takes 645 J of energy to raise the temperature of 138.5 g mercury from 20.0°C to 53.5°C. Calculate the specific heat capacity and the molar heat capacity of mercury. specific heat capacity 1 J/g · °C molar heat capacity 2 J/mol°C

The equilibrium constant for the reaction 2Hg(ℓ) 2Cl−(aq) Ni2 (aq) >>>> Ni(s) Hg2Cl2(s) is 5.6 × 10^−20 at 25◦C. Calculate the value of E◦ for a cell utilizing this reaction.

how many mL of 0.250 M NaOH are required to neutralize 30.4ml of 0.152 M HCl

The rate constant for the elementary reaction is 7.1 x 10^9/M2·s at 25°C. 2 NO(g) O2(g) → 2 NO2(g) What is the rate constant for the reverse reaction at the same temperature?

For the following half-raction Estandard= 2.07V AlF_6 3- 3e- —-> Al 6F- … Al 6F- Using data from Table 11.1 calculate the equilibrium constant at 25 degrees Celsius for the reaction Al3 6F- —> (AlF6)3-

Write the correct electron configuration for the Co3 ground state.

With some manipulation, the Rydberg equation can be rewritten in the form E=rm constant times biggl( frac {1}{{{it n}_ {rm f}}^2}- frac {1}{{{it n}_{rm i}}^2} biggr) which allows you to calculate the energy of the emitted light. What is the value of the constant needed to complete this equation?

Get college assignment help at uniessay writers The following reaction is carried out as a source of hydrogen gas in the laboratory: Zn(s) 2HCl(aq) –> ZnCl_2(aq) H_2(g) If 355 mL of hydrogen gas is collected over water at 25 degrees C at a total pressure of 752 mm Hg , how many grams of Zn reacted?

An airplane is pressurized to 650 {rm mm,Hg}, which is the atmospheric pressure at a ski resort at 1.30×104 {rm ft} altitude. If the partial pressure of oxygen drops below 100 {rm mm,Hg}, passengers become drowsy. If this happens, oxygen masks are released. What is the total cabin pressure at which oxygen masks are dropped?

A gas expands and does P-V work on the surroundings equal to 281 J. At the same time, it absorbs 216 J of heat from the surroundings. What is the change in energy of the system?

Under certain conditions, the reaction 3A 2B –> 4C was observed to proceed at a rate of 0.00292 M· s−1. What was the corresponding rate of change in reactant A?

a sample of gas has a mass of 38.8 mg. it’s volume is 224 mL at a temperature of 55 degrees C and a pressure of 886 torr. Find the molar mass of the gas.

What is the pH of an aqueous solution that is 9.5×10−2 M NaOCl ?

consider the gaseous reaction at 347 celsius N2 3H2–>2NH3 if 2.00 mole of N2 and 3.00 mole of H2 react, which of the two reactants is the limiting reagent Search Results

For each of the following unbalanced equations calculate how many moles of the second reactant would be required to react completely with 0.413 mole of the first reactant. Al H20SO4 —-> Al2(SO4)3 3H2

How many moles of PCl5 can be produced from 30.0g of P4?

How much energy in joules is required to heat 215 mL of coffee from 25.0 ^circ rm C to 62.0 ^circ rm C? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 rm J/(gcdot K) , as water over this temperature range.

The pressure of 8.0 L of an ideal gas in a flexible container is decreased to one-eighth of its original pressure, and its absolute temperature is decreased to one-third of the original. What is the final volume of the gas?

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November 3, 2019