23,980 Answered Questions for the topic chemistry
Chemistry
20h
Chemistry, Acid Base Titration
What is the pH if you have 1.0M weak acid with pKa = 5.55?If you add 20.0mL of this weak acid with 20.0mL of 1.0MNaOH, a strong base, what would be the resulting pH?Please explain the steps thanks.
Chemistry
22h
Hess' Law Chemistry
When using Hess’s Law to calculate rnthalpy of a rxn, what does a negative or positive (delta)H mean? When do you add or subtract and why?
Chemistry
1d
Chemistry question
A solution is made by combining 75.0 mL of 0.0040 M Na2SO4 and 25.0 mL of 0.080 M AgNO3. Calculate the final concentrations of all four ions in solution. The Ksp of Ag2SO4 is 1.5 x 10^-5.
Chemistry
1d
Chemistry question
Determine the equilibrium concentrations of both Cu(NH3)4 2+ and Cu2+ in a solution made initially to be 0.010 M Cu(NO3)2 and 0.100 M NH3. The Kf for Cu(NH3)4 2+ is 1.0 x 10^-12
Chemistry
1d
Chemistry question
Which ion has the largest radius? (A) CI- (B) F- (C) K+ (D) Ca2+ could you explain which option is the correct answer?
Chemistry
1d
Chemistry question
In which pair of particles is the first member larger than the second member?(A) Li + ; Be2+(B) Li + ; Li(C) Li + ; Na +(D) Be; MgCould you explain which option is the correct answer
Chemistry
4d
There are 2.45 moles of gas at a pressure of 38.4 atm and a temperature of 401 K. What id the volume
Chemistry
4d
Determine the empirical formula and the molecular formula for Ibuprofen.
buprofen, the pain reliever in Advil and Motrin contains 75.69% C, 8.80% H, and 15.51% O by mass. The molecular mass is 206.3 g/mol. Determine the empirical formula and the molecular formula for...
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Chemistry
4d
The total mass of aluminum hydroxide at the end of the reaction was 0.94g. What was the percent yield of this experiment?
A student in a chemistry lab mixes 13.8g of aluminum sulfate with 2.04g calcium hydroxide to produce aluminum hydroxide and calcium sulfate.The unbalanced reaction is: Al2(SO4)3 + Ca(OH)2 Al(OH)3+...
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Chemistry
4d
What mass of aluminum hydroxide is produced?
A student in a chemistry lab mixes 13.8g of aluminum sulfate with 2.04g calcium hydroxide to produce aluminum hydroxide and calcium sulfate.The unbalanced reaction is: Al2(SO4)3 + Ca(OH)2 Al(OH)3+...
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Chemistry
4d
limiting reactant
A student in a chemistry lab mixes 13.8g of aluminum sulfate with 2.04g calcium hydroxide to produce aluminum hydroxide and calcium sulfate.The unbalanced reaction is: Al2(SO4)3 + Ca(OH)2 Al(OH)3+...
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Chemistry
6d
How many grams of \textrm{Ag}_2 \textrm{O} are required to produce [var:O2] L oxygen gas via decomposition at 102.3 kPa and 175°C? 2
2Ag2O=4Ag+O2
Chemistry
6d
what is the total concentration of all ions in a solution formed by dissolving 1.50 g Al2(SO4)3 in 100.0 ml of solution?
what is the total concentration of all ions in a solution formed by dissolving 1.50 g Al2(SO4)3 in 100.0 ml of solution?
Chemistry
6d
At 25 C, Keq = 0.90 for the reaction: H2O + Cl2O = 2HOCl (all gases)
Calculate the concentrations of all species at equilibrium a) if 1.0g of H2O and 4.83 g of Cl2O are mixed in a 1-L flask. b) 1.0 mol of pure HOCl is placed in a 2.0-L flask
Chemistry
7d
Requesting a tutoring session
I thought I messaged and requested a tutoring session for my son last night for a session today, but didn’t receive any email notifications.I also can’t seem to send a message to the previous tutor...
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