07/18/21

balanced net iconic equation for lead (II) nitrate and potassium bromide

balanced equation for these 2 aqueous solutions
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07/18/21

Chemistry (stoichiometry)

Heating a 6.862 g sample of an ore containing a metal sulfide in excess oxygen produces 1053 mL of SO2gas measured at 66 oC and 0.972 atm. Calculate the percentage by mass of sulfur in the ore. (R... more
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07/18/21

Chemistry (stoichiometry)

A 2.29 g sample of an unknown acid (monoprotic) is dissolved in 1.0 liter of water. A titration required25.0 mL of 0.500 M NaOH to completely react with all the acid present. What is the molar mass... more
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07/18/21

Calculate the molar concentration of the acid if 35.18mL of hydrochloric acid was required to neutralize 45.0 mL of 0.345 M lithium hydroxide
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07/17/21

Can someone please make sure my answers to these Chemistry questions are correct? I just want to make sure I'm understanding everything.
1. An increase in temperature _______.A. increases the solubility of a solidB. decreases the solubility of a solidC. increases the solubility of a liquidD. decreases the solubility of a liquidE.... more
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07/17/21

Calculate Solubility of Ions given Ksp
The Ksp of Fe3(PO4)2 is 2.50⋅10^−20M.Calculate the solubility of each ion in a saturated solution: (Fe^2+ and PO_4^3-)I'm confused on this question and don't know where to start. Any help is... more
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07/17/21

Calculate Solubility of Ions given Ksp
The Ksp of PbCl2 is 4.18⋅10^−13 M. Calculate the solubility of each ion in a saturated solution: (Pb^2+ and Cl^-)I'm so confused on how to do this problem. Any help is appreciated.
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07/17/21

Solubility given Ksp
What is the solubility (in mol/L) of Cu3PO4 given that the Ksp is 1.33⋅10^−16.I'm getting this wrong, not sure if I'm setting it up correctly.  
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07/17/21

pH and pOH of a solution
A 0.660 M solution of a weak acid (HA) is made. The Ka for this acid is 2.17⋅10^−9. How do I find the pH and pOH given Ka and M of the solution? I don't know what I'm doing wrong; initially I got... more
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07/17/21

Calculate Ka of an Acid
A 0.660 M solution of a weak acid (HA) is made. The solution has a pH of 4.81. Calculate the Ka of this acid. Report your answer in scientific notation with 3 sig figs.How do I calculate the Ka... more
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07/16/21

Find the rate of the reaction when the concentrations of A and B are, respectively, 0.1 M and 0.15 M
A student performed a chemical reaction which involved one mole of A reacting with 2 moles of B to form one mole of product C.This reaction is 0 order for A and first order for B. The initial rate... more
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07/16/21

Solubility Products
What is the molar solubility (in mol/L) of PbCl2 (Ksp = 4.18⋅10^−13) in a 0.16 M NaCl solution. 
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07/16/21

Solubility Products
The molar solubility of PbCl2 is 4.71⋅10^−5 M. Calculate the solubility of each ion in a saturated solution: ___ M Pb^2+___ M Cl^-
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07/16/21

Solubility Products
What is the solubility (in mol/L) of PbCl2 given that the Ksp is 4.18⋅10^−13.
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07/16/21

Solubility Products

The molar solubility of PbCl2 is 4.71⋅10^−5 M. Calculate the Ksp for PbCl2. 
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07/16/21

Acid and Base (pH and pOH)
A 8.70⋅10^−3 M solution of HCl is made. What is the pH of the solution?What is the pOH of the solution?What is the [OH^-] in the solution?I'm getting these marked wrong for some reason. I don't... more
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07/16/21

How much milk will I need in mL?
During the summer after your first year at Carnegie Mellon, you are lucky enough to get a job making coffee at Starbucks, but you tell your parents and friends that you have secured a lucrative... more
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07/16/21

Chemistry 122 d
Identify whether each substance is an acid or base: HCIO2NH3 NO2 NaOHH3PO4NH4+ (i.e, HNH3)
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07/15/21

Chemistry 122 d
A quantity of 2.00 moles of gas is trapped in a 18.0 L container at 13•C. Calculate the pressure of the gas in this container.
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07/15/21

How much time should a bumper be immersed in Chromium vat?
To save on production costs, most automobile bumpers are never coated with more than 300 g of chromium. Determine how much time a standard bumper should be immersed in a chromium vat. Give your... more
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07/15/21

Determine the identity of the daughter nuclide
Determine the identity of the daughter nuclide from the beta decay of 20982Pb?
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07/14/21

If the temperature of 9.2 L of a gas at 8.8 ºC falls by 6.2 Cº, what is the new volume of the gas if the pressure is constant?
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07/13/21

What is the mass in grams of 0.803 mol of KCIO
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07/12/21

If you were given a 0.5 M HCl solution and a 0.85 M HCl solution to titrate, which would you expect to require more base to reach neutral pH? Why?
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07/11/21

Which of the following metals will dissolve in HCl?
Which of the following metals will dissolve in HCl? Ba Cd K Zn all of the above
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