04/08/18

Explain how the hydronium and the hydroxide ions are formed?
Water that has a pH of 7 has an equal amount of H3O+ ions and OH- ions.
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04/08/18

if no sugar was removed at any time, why did the molarity of the 2L solution change compared to the 1L solution
use the words solute and solvent in your answer 
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04/07/18

How do you find the excess reagent?
Consider the reaction: 2 HCl + Ca(OH)2 → 2 H2O + CaCl2Calculate the amount of the excess reagent, in moles, when 2.6 moles of HCl and 1.4 moles of Ca(OH)2 are mixed.
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04/07/18

For which salt in each of the following groups will the solubility depend on pH
A. AgF, AgCl, AgBr B. Pb (OH) 2, PbCl2 C. Sr (NO3) 2, Sr (NO2)  D. Ni (NO3) 2, Ni (CN) 2
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04/07/18

Calculate the solubility of the solid Pb3 (PO4) 2 Ksp=1×10^-54 in a 0.10M Pb (NO3) 2
Calculate the solubility of the solid Pb3 (PO4) 2 Ksp=1×10^-54 in a 0.10M Pb (NO3) 2
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04/07/18

Calculate the solubility of Ce (IO3) 3 in a 0.20M KIO3 solution 4.4×10^-8 mol/L Calculate Ksp for Ce (IO3) 3
Calculate the solubility of Ce (IO3) 3 in a 0.20M KIO3 solution 4.4×10^-8 mol/L Calculate Ksp for Ce (IO3) 3
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04/07/18

The Ksp for lead iodide PbI2 is 1.4×10^-8 Calculate the solubility of lead iodide in each of the following
A. Water B. 0.10M Pb (NO3) 2 C. 0.010M NaI
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04/07/18

The Ksp for silver sulfate (AgSO4) is 1.2×10^-5. Calculate the solubility of silver sulfate in each of the following
A. Water B. 0.10M Pb (NO3) 2 C. NaI
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04/07/18

Calculate the solubility of Co(OH) 3 Ksp=2.2×10^16 in a buffered solution with a pH=11.0
Calculate the solubility of Co(OH) 3 Ksp=2.2×10^16 in a buffered solution with a pH=11.0
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04/07/18

Calculate the solubility in moles per liter of Fe (OH) 3 Ksp=4×10^-38 in each of the following
A. Water B. A solution buffered at pH=5.0 C.  A solution buffered at pH=11.0
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04/07/18

Can someone help me with percent yield homework? And if you could explain, that'd be amazing! I'm really stuck
Consider the reaction: 4 NH3 + 5 O2 → 4 NO + 6 H2OIf the reaction has 29.8% yield, how many grams of NH3 should react with excess oxygen to produce 70.5 g of NO?
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04/07/18

Would a 100 mL graduated cylinder hold 120 g of ethyl alcohol(D+0.79 g/mL)?
D= Mass/Volume(D=M/V)
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04/07/18

Liters and kPa
Boyle’s law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 10L, the pressure is 76kPa. What is the volume when the pressure is 40kPa
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04/06/18

how many isoprene units are in testosterone?
My teacher gave us this question for homework, to determine isoprene rule in the testosterone but i have trouble doing it 
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04/06/18

How do I calculate the theoretical maximum concentration of a molecule in a solution?
I have been trying to calculate the maximum concentration of a molecule in MCT oil, PG, VG, and a blend of those.  I have the logp and molecular weight available but cannot find an equation for... more
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04/06/18

Calculate the formula masses for the compound H3PO4
....................
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04/06/18

phenol+hcl+hcn
phenol + hcl +hcn →
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04/05/18

How much heat is required to melt 5 grams of ice at 0 degrees Celsius to liquid water at 0 degrees Celsius
I do not understand heat calculations I understand how to do it if there are different temperatures but how do I do it if they are different states of matter at the same temperature I have tried... more
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04/05/18

a gas occupies a volume of 140mL ate 35. Celsius and 97kPa. what is the volume of the gas at STP?
I'm not sure how to find the answer to this problem.
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04/05/18

If two objects are in thermal equilibrium when they are in contact, they have the same temperature
the question is mainly about physics i dont really understand it so thats why im asking you 
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04/05/18

What mass of carbon dioxide occupies a volume of 22.4 liters at STP?
the answer is 22.0g,44.0g,66.0g, or88.0g
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04/05/18

Calculate Travel Time An airplane flew a distance of 650 km at an average speed of 300 km/h. How much time did the flight take?
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04/05/18

What’s the value of 1,152 BTU in joules
What’s the valur of 1,152 BTU in joules 
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04/05/18

calculate the volume of the vessel to ensure that the yield of PCl5 is 0.80 mol under the same conditions
When 1.00mol of PCl3 and 2.00 mol of Cl2 were placed in a 2.50dm3 vessel, it was found that 0.50 mol PCl5 was? formed at equilibrium . calculate the volume of the vessel to ensure that the yield of... more
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04/05/18

What is the temperature in degrees Fahrenheit of a freezer kept at -25 Celsi?
I have to find out the answer of the tempeta of the freezer
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