25,963 Answered Questions for the topic chemistry

Chemistry

10/18/23

Classify each substance based on the intermolecular forces present in that substance.
Hydrogen bonding, dipole–dipole, and dispersion Dipole–dipole and dispersion only. Dispersion only HF CO He CH3Cl
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Chemistry

10/18/23

Calculate the solubility at 25 °C of Co(OH)2 in pure water and in a 0.0130M CoCl2 solution.
Calculate the solubility at 25 °C of Co(OH)2 in pure water and in a 0.0130M CoCl2 solution.Co(OH)2 Ksp = 5.92 x 10-15 Round both of your answers to 2 significant digits.solubility in pure water:... more
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Chemistry

10/17/23

Consider the structure shown.
Determine the number of shared and unshared electrons in the structure.shared (bonding) electrons:unshared (lone, nonbonding) electrons:Determine the number of shared and unshared pairs of... more
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Chemistry

10/17/23

Heat capacity Gen Chem
Two solid objects, A and B, are place in boiling water and allowed to have the same temperature there. Each object is then lifted out and placed in separate beakers containing 1000 g of water at... more
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Chemistry

10/16/23

Calculate the solubility at 25 °C of Ni(OH)2 in pure water and in a 0.0170M NaOH solution.
Calculate the solubility at 25 °C of Ni(OH)2 in pure water and in a 0.0170M NaOH solution. Ni(OH)2 Ksp = 5.48 x 10-16 Round both of your answers to 2 significant digits.solubility in pure water:... more
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Chemistry

10/16/23

Calculate the solubility at 25 °C of BaCrO4 in pure water and in a 0.0180M BaCI2 solution.
Calculate the solubility at 25 °C of BaCrO4 in pure water and in a 0.0180M BaCI2 solution. BaCrO4 Ksp= 1.17 x 10-10Round both of your answers to 2 significant digits.solubility in pure... more
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Chemistry

10/16/23

The solubility of Mg(OH)2, in water at 25 ° is measured to be 0.0096 g/L. Use this information to calculate Ksp for Mg(OH)2.
The solubility of Mg(OH)2, in water at 25 ° is measured to be 0.0096 g/L. Use this information to calculate Ksp for Mg(OH)2.Round your answer to 2 significant digits.
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Chemistry

10/16/23

The solubility of PbCO3, in water at 25 °c is measured to be 7.3 x 10-5 g/L. Use this information to calculate Ksp for PbCO3.
The solubility of PbCO3, in water at 25 °c is measured to be 7.3 x 10-5 g/L. Use thisinformation to calculate Ksp for PbCO3.Round your answer to 2 significant digits.
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Chemistry

10/16/23

Calculate the solubility of PbF2 in water at 25 °C.
Calculate the solubility of PbF2 in water at 25 °C. PbF2 Ksp = 3.3 x 10-8Round your answer to 2 significant digits.___g/L
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Chemistry

10/16/23

Calculate the solubility of ZnCO3 in water at 25 °C.
Calculate the solubility of ZnCO3 in water at 25 °C. Ksp data is given below.ZnCO3 Ksp = 1.46 x 10-10Round your answer to 2 significant digits.___g/L
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Chemistry

10/16/23

Complete the solubility constant expression for CaF2. 
Complete the following solubility constant expression for CaF2. Ksp =
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Chemistry

10/16/23

Complete the following solubility constant expression for AgBrO3.
Complete the following solubility constant expression for AgBrO3.Ksp = 
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Chemistry

10/16/23

Determine the molar enthalpy (in kJ/mol) for the reaction 4 NH₃ (g) + 5 O₂ (g) → 4 NO (g) + 6 H₂O (g).
Using the equations N₂ (g) + O₂ (g) → 2 NO (g) ∆H° = 180.6 kJ/mol N₂ (g) + 3 H₂ (g) → 2 NH₃ (g) ∆H° = -91.8 kJ/mol 2 H₂ (g) + O₂ (g) → 2 H₂O (g) ∆H° = -483.7 kJ/mol Determine the molar enthalpy... more
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Chemistry

10/16/23

Calculate the enthalpy of combustion (kJ/mol) of methyl linoleate (C₁₉H₃₄O₂)
Calculate the enthalpy of combustion (kJ/mol) of methyl linoleate (C₁₉H₃₄O₂), an important component of many biodiesel fuels made from corn oil and methanol, given the following standard enthalpies... more
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Chemistry

10/16/23

Write the balanced chemical equation that corresponds to the hydrolysis of aspirin with NaOH.

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Chemistry

10/16/23

Write the balanced chemical equation that corresponds to the titration of aspirin with NaOH.
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Chemistry

10/16/23

General chemistry
A scientist wants to make a solution of tribasic sodium phosphate, Na3PO4, for a laboratory experiment. How many grams of Na3PO4 will be needed to produce 550. mL of a solution that has a... more
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Chemistry

10/16/23

Percent Yield Question
When copper is heated with an excess of sulfur, copper(I) sulfide is formed. In a given experiment, 0.0970 moles of copper was heated with excess sulfur to yield 3.77 g copper(I) sulfide. What is... more
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Chemistry

10/16/23

Percentage Yield
If 26.6 g of Ca₃(PO₄)₂ reacts with an excess of H₂SO₄, what is the percent yield if 13.4 g of H₃PO₄ are formed in the following UNBALANCED chemical equation? Ca₃(PO₄)₂ + H₂SO₄ → H₃PO₄ + CaSO₄
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Chemistry

10/16/23

What is the approximate vapor pressure (to the nearest 50 torr) of H2O at 75 oC?
What is the approximate vapor pressure (to the nearest 50 torr) of H2O at 75 oC?
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Chemistry

10/16/23

What the approximate boiling point (to the nearest 10 oC) of CCl4 at 500 torr?
What the approximate boiling point (to the nearest 10 oC) of CCl4 at 500 torr?
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Chemistry

10/15/23

beers law problem
During an experiment, a chemistry student collects absorbance vs concentration data for different concentrations of a salt solution at 490 nm. the experiment is run using a 1.00 cm diameter cuvette... more
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Chemistry

10/15/23

Chemistry ICE Table
Determine the number of grams of NH4Br needed to prepare an aqueous solution at a specific pH by constructing an ICE table, writing the equilibrium constant expression, and using this information... more
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Chemistry Science

10/15/23

A 165.0 ml solution of 2.724M strontium nitrate is mixed with 215.0ml of a 3.120M sodium fluoride solution. Calculate the mass of the resulting strontium fluoride precipitate.
Assuming the complete precipitation, calculate the final concentration pf each ion. If the ion is no longer in solution, enter a 0 for the concentration.
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Chemistry Science

10/15/23

A 165.0 ml solution of 2.724M strontium nitrate is mixed with 215.0ml of a 3.120M sodium fluoride solution. Calculate the mass of the resulting strontium fluoride precipitate.
Assuming the complete precipitation, calculate the final concentration pf each ion. If the ion is no longer in solution, enter a 0 for the concentration.
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