10/20/19

A precipitate of lead(II)chloride forms when 150.0 mg of NaCl is dissolved in 0.250 L of 0.12 M lead(II)nitrate. True or False? Ksp of PbCl2 is 1.7 x 10-5.
A precipitate of lead(II)chloride forms when 150.0 mg of NaCl is dissolved in 0.250 L of 0.12 M lead(II)nitrate. True or False? Ksp of PbCl2 is 1.7 x 10-5.The answer is: falseplease explain
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10/20/19

The Ksp of AgCl at 25 oC is 1.6 x 10-10. Consider a solution that is 2.0 x 10-6 M NaCl and 1.0 x 10-4 M AgNO3.
The Ksp of AgCl at 25 oC is 1.6 x 10-10. Consider a solution that is 2.0 x 10-6 M NaCl and 1.0 x 10-4 M AgNO3.the answer is: Q > Ksp and a precipitate will formplease explain
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10/20/19

The Ksp of Al(OH)3 is 1.0 x 10-33. What is the solubility of Al(OH)3 in 0.000010 M NaOH?
The Ksp of Al(OH)3 is 1.0 x 10-33. What is the solubility of Al(OH)3 in 0.000010 M NaOH?The answer id 1.0e-18please show your steps
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10/20/19

The Ksp of Al(OH)3 is 1.0 x 10-33. What is the solubility of Al(OH)3 in 0.00010 M NaOH?
The Ksp of Al(OH)3 is 1.0 x 10-33. What is the solubility of Al(OH)3 in 0.00010 M NaOH?The answer id 1.0e-21please show your steps
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10/20/19

At 25 oC the solubility of copper(II) iodate is 3.27 x 10-3 mol/L. Calculate the value of Ksp at this temperature.
At 25 oC the solubility of copper(II) iodate is 3.27 x 10-3 mol/L. Calculate the value of Ksp at this temperature.The answer is 1.4e-7please show you steps
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10/20/19

At 25oC the solubility of lead(II) bromide is 2.70 x 10-2 mol/L. Calculate the value of Ksp at this temperature.
At 25 oC the solubility of lead(II) bromide is 2.70 x 10-2 mol/L. Calculate the value of Ksp at this temperature.The answer is 7.9e-5please show the steps
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10/20/19

Determine the pH at the equivalence (stoichiometric) point in the titration of 30 mL of 0.16 M NH3(aq) with 0.19 M HCl(aq).

Determine the pH at the equivalence (stoichiometric) point in the titration of 30 mL of 0.16 M NH3(aq) with 0.19 M HCl(aq). The Kb of NH3 is 1.8 x 10-5. The Kb of NH3 is 1.8 x 10-5.The answer is... more
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10/20/19

0.55 atm and 64 ∘C
A sample of argon gas has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 112 ∘C. What is the final volume of the gas, in milliliters, when the pressure and temperature of the gas... more
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10/20/19

659 mmHg and 283 K
A sample of argon gas has a volume of 735 mL at a pressure of 1.20 atm and a temperature of 112 ∘C. What is the final volume of the gas, in milliliters, when the pressure and temperature of the gas... more
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10/20/19

What pressure would it take to compress 350. L of helium gas initially at 1.00 atm into a 2.00 L tank at constant temperature?
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10/20/19

the number of grams of H2 in 1920 mL of H2 gas
Use the molar volume to calculate each of the following at STP:
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10/20/19

the volume, in liters, occupied by 60.0 g of Ar gas
Use the molar volume to calculate each of the following at STP:
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10/19/19

The activation energy, Ea, for a particular reaction is 13.6 kJ/mol. If the rate constant at 475 K is 0.0450 1/min, then what is the value of the rate constant at 601 K? (R = 8.314 J/mol • K)
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10/19/19

The reaction X + X₃ → 2 X₂ is shown to have an activation energy of 25 kJ/mol while the enthalpy of reaction (∆H) is -388 kJ/mol. What is the activation energy of the reverse reaction?
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10/19/19

What is the rate constant of a first-order reaction if the half-life is 2.50 min?
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10/19/19

What is the half-life for a particular reaction if the rate law is rate = (1301 min⁻¹)[A]?
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10/19/19

im needing help on my chemistry .... chemical reactions and moles.
Mg(OH)2 + 2HCl = MgCl2 +2H2Othat's the balanced equation.question 1. If one antacid tablet contains 0.10 g of Magnesium hydroxide how many grams of stomach acid does this tablet... more
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10/19/19

How can you tell if a compound is Iconic Or Covalent when there are multiple elements in the formula?
I know the difference between ionic and covalent when there are two elements, but not when there are more than two.
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10/19/19

If the water temperature at the gas collection port is assumed to be 25 degrees celsius but it is actually 35, will your calculated molar mass be too high or too small

If the water temperature at the gas collection port is assumed to be 25 degrees celsius but it is actually 35, will your calculated molar mass be too high or too small
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10/19/19

If all the connections in your apparatus are not airtight and some H2 escape( after the initial volume has been recored), will your calculated molar mass be too high or too low why?
If all the connections in your apparatus are not airtight and some H2 escape( after the initial volume has been recored), will your calculated molar mass be too high or too low why?
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10/18/19

You have 5mL of 1M CH3COOH and want to titrate using 1M NaOH. How much NaOH do you need to reach neutrality?
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10/18/19

How much 0.1M NaOH will you need to titrate 5mL of 1M CH3COOH?
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10/17/19

Chemistry: Equilibrium Math Question 9
The equilibrium constant for dissociation of ammonium chloride:NH4Cl(s) ↔ NH3(g) + HCl(g)is equal to KP = 0.013312 at 550.0 K. If 1.5 g of ammonium chloride is placed in a 1.0 L vessel and charged... more
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10/17/19

Chemistry: Equilibrium Math Question 8
The water-gas shift reaction is crucial to many industrial processes:H2O(g) + CO(g) ↔ H2(g) + CO2(g)The equilibrium constant for this reaction is K = 3.087012 at 802.0 K. If a vessel is initially... more
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10/17/19

Chemistry: Equilibrium Math Question 7
Consider the equilibrium between hydrogen sulfide and its gaseous elements:2 H2S(g) ↔ 2 H2(g) + S2(g) KP = 2.023E-6 at 908.0 Kif a vessel is initially charged with 8.35 bar of pure H2S(g), what is... more
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