05/11/20
A gas has a pressure of 1.42 atm and occupies a volume of 7.7 L. If the gas is compressed to a volume of 1.76 L, what will its pressure be, assuming constant temperature? Answer in units of atm.
Follows
•
2
Expert Answers
•1
![]()
05/11/20
50.0L of 0.185M Sr(OH)2 is reacted with 35.0mL of a solution containing 0.130g of HCl.
a. Calculate the pOH resulting from the mixtureb. suggest an indicator that will be effective for this incomplete titration and explain your choiceI'm just having trouble setting everything up.
Follows
•
2
Expert Answers
•1
![]()
05/11/20
How do I find the density of helium in a 2 L tank at one ATM and 23°C
Follows
•
2
Expert Answers
•1
![]()
05/11/20
Stoichiometry Questions Help
If 1.21 moles of solid zinc are added to 96.85 g of hydrochloric acid, then zinc chloride and hydrogengas is produced.a. Write a balanced chemical equation for this reaction.b. Determine which...
more
Follows
•
2
Expert Answers
•1
![]()
05/11/20
how many grams of carbon dioxide will be produced by the complete combustion of 30 grams of ethane, C2H6
Follows
•
2
Expert Answers
•1
![]()
05/11/20
Quick question about electrode potential value
If Ag+ + e- ---> Ag(s) Eº = +0.80 V, does that mean that the reverse of this reaction has the same E0? Or does it become negative?Thank you in advance.
Follows
•
2
Expert Answers
•1
![]()
05/11/20
Identify which reactant or product in the given reaction is the base. HC2H3O2 + H2O --> C2H3O2- + H3O+
HC2H3O2H2OC2H3O2-H3O+
Follows
•
2
Expert Answers
•1
![]()
05/11/20
Identify which reactant or product in the given reaction is the conjugate acid. H2SO4 + NH3 --> HSO4- + NH4+
H2SO4NH3HSO4-NH4+
Follows
•
3
Expert Answers
•1
![]()
05/11/20
The half-life for the radioactive decay of calcium-47 is 4.5 . If a sample has an activity of 3.0 after 27 d , what was the initial activity of the sample?
The half-life for the radioactive decay of calcium-47 is 4.5 . If a sample has an activity of 3.0 after 27 d , what was the initial activity of the sample?
Follows
•
2
Expert Answers
•1
![]()
05/10/20
Electrochemistry question - Have I done it correctly?
Hi! I have solved some questions and I would appreciate it if someone could just check if I solved correctly .Given the current situation the only help I can get to see if my answers are correct is...
more
Follows
•
2
Expert Answers
•1
![]()
05/10/20
Spontaneous Reaction?
Hi!I have an exercise question I have a little trouble with:Does this following reaction occur spontaneously?Fe3+ + Ag(s) + Cl- --> Fe2+ + AgCl (s)Am I supposed to use Gibbs free energy here? I...
more
Follows
•
2
Expert Answers
•1
![]()
05/08/20
What is the total pressure of the following Gases? 1.5 atm helium, 4.5 atm nitrogen, and 3.7 atm oxygen?
be sure to use proper sig figs
Follows
•
2
Expert Answers
•1
![]()
05/08/20
239 mL of a solution of NaOH is diluted to a final volume of 1,497 mL and the new molarity is 0.185 M. Calculate the original molarity of the base. Report your answer with 4 decimal places.
Follows
•
2
Expert Answers
•1
![]()
05/08/20
When 0.325 L of a 2.96 M solution is diluted to 2.035 L, what is the new molarity? Report your answer with 4 decimal places.
Follows
•
2
Expert Answers
•1
![]()
05/08/20
Acid base and pH
Determine the hydronium ion concentration in a solution that is 0.0001 M HCl
Follows
•
2
Expert Answers
•1
![]()
05/08/20
H2O + CO2 --> H2CO3 How many liters of CO2 are needed in order to make 10.5 g H2CO3 at STP?
Follows
•
2
Expert Answers
•1
![]()
05/08/20
Argon gas at 5.0 atm occupies 675 mL. Determine the pressure if the gas occupies 910 mL.
Follows
•
2
Expert Answers
•1
![]()
05/08/20
When 12.64 g of Ne occupy 1.08 L they exert pressure of 19.7 atm. Determine the temperature of neon.
Follows
•
2
Expert Answers
•1
![]()
05/08/20
N2 + 3 H2 → 2 NH3 What mass of ammonia should he be able to produce if he reacts 70.0 g of H2 with excess N2? f he recovers 250.0 g of ammonia, what is his percent yield?
Follows
•
2
Expert Answers
•1
![]()
05/07/20
Acid base and pH
What is the molarity of OH^− in solutions with an H3O^+ concentration of 0.00262 mol/L?
Follows
•
1
Expert Answers
•2
![]()
![]()
05/07/20
Balance each redoc reaction occuring in basic solution
NO2^−(aq)+Al(s)→NH3(g)+AlO2^−(aq)Al(s)+MnO4^−(aq)→MnO2(s)+Al(OH)4^−(aq)
Follows
•
2
Expert Answers
•1
![]()
05/07/20
Balance each redox reaction occuring in acidic aqueous solution Use the half reaction method
I^−(aq)+NO2^−(aq)→I2(s)+NO(g)BrO3^−(aq)+N2H4(g)→Br^−(aq)+N2(g)NO3^−(aq)+Sn^2+(aq)→Sn^4+(aq)+NO(g)
Follows
•
2
Expert Answers
•1
![]()
05/07/20
Balance the half reactions
S2O8^2−(aq)→2SO4^2−(aq)Cr2O7^2−(aq)→Cr^3+(aq)NO(g)--->NO3. ^-
Follows
•
2
Expert Answers
•1
![]()
05/07/20
Balancing redox reactions using the half reaction method
Al(s)+Ag+(aq)→Al3+(aq)+Ag(s) Zn(s)+Sn2+(aq)→Zn2+(aq)+Sn(s)Mg(s)+Cr3+(aq)→Mg2+(aq)+Cr(s)
Follows
•
2
Expert Answers
•1
![]()
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.