03/08/21

How do I calculate the inverse of the absolute temp and convert to (mK)-1?
Temperature: 296.05K, 297.05K, 298.05KHow do I find absolute temp? I converted from celsius to get my temp in kelvin, so is that absolute? And the inverse would just be 1/T, right? But how do I... more
Follows • 2
Expert Answers •1

03/08/21

The compound calcium nitrate is a strong electrolyte. Write the reaction when solid calcium nitrate is put into water:
I need help with this exercise, please. The compound calcium nitrate is a strong electrolyte. Write the reaction when solid calcium nitrate is put into water. I have three blank spaces to fill in.
Follows • 2
Expert Answers •1

03/07/21

Consider the titration of a 60.0 mL of 0.365 M weak acid HA (Ka = 4.2 x 10⁻⁶) with 0.400 M KOH. What is the pH before any base has been added?
Follows • 2
Expert Answers •1

03/07/21

Consider the titration of 50.0 mL of 0.315 M weak base B (Kb = 7.5 x 10⁻⁶) with 0.340 M HNO₃. What is the pH of the solution before any strong acid has been added?
Follows • 2
Expert Answers •1

03/07/21

Determine the pH of a buffer that is 0.25 M NH₃ and 0.15 M NH₄Cl. The value of pKb for NH₃ is 4.75.
Follows • 2
Expert Answers •1

03/07/21

Determine the pH of a buffer that is 0.95 M HBrO and 0.68 M KBrO. The value of pKa for HBrO is 8.68.
using ICE table to determine unknown
Follows • 2
Expert Answers •1

03/07/21

What is the mole fraction of each gas in the mixture?
A mixture of carbon dioxide and hydrogen gases contains carbon dioxide at a partial pressure of 384 mm Hg and hydrogen at a partial pressure of 337 mm Hg.
Follows • 2
Expert Answers •1

03/07/21

What is the partial pressure of each gas in the mixture?
A mixture of methane and oxygen gases, at a total pressure of 882 mm Hg, contains 1.45 grams of methane and 6.47 grams of oxygen.
Follows • 2
Expert Answers •1

03/07/21

Need help with these questions since I dont know the solution from it
1.) What is the freezing-point depression of a 0.500-m solution of a solute in acetic acid?2.)A solution of an unknown solute in water has a boiling temperature of 100.255°C. What is the molal... more
Follows • 2
Expert Answers •1

03/07/21

How do you tell if something is solid/liquid/gas in a single and double displacement reaction?
I feel like I kind of know this but just wanted someone to answer so that I can know for sure; Thanks!
Follows • 2
Expert Answers •1

03/07/21

Difference between aqueous and a liquid?

In the reaction sodium hydroxide+sulfuric acid, the balanced equation I got isNaOH(aq)+H2SO4(aq)-->Na2SO4+HOH or NaOH(aq)+H2SO4(aq)-->Na2SO4+H2OI don't understand how to write the net ionic... more
Follows • 2
Expert Answers •1

03/06/21

The air we breathe is about 18\%O 2 and 78\%N 2 -in this case O 2 is the
Follows • 2
Expert Answers •1

03/06/21

How to find the density of a mixture
water and oil are mixed in the ratio of 3:5. Find the density of the mixture if the density of water is 1g/cm3 and the density of oil is 0.8g/cm3
Follows • 2
Expert Answers •1

03/06/21

An unknown gas has a volume of 200L at 1.7atm. What is ots volume at STP?
Follows • 2
Expert Answers •1

03/06/21

Calculate the molality of a sucrose solution (C12H22O11) that was prepared by mixing 1.450 grams of the sugar with 30.00 mL of water. C12H22O11 = 342.34 g / mol dwater = 1.00 g / mL
Follows • 2
Expert Answers •1

03/06/21

An object is emitting radiation at 1520 nm. A detector is capturing 7 x10^7 photons/sec at this wavelength. h = 6.63x10-34 J-s. c = 2.998 x 108 m/s. Total energy of the photons detected in 1 sec?
Follows • 2
Expert Answers •2

03/06/21

What is the molar mass of a particular compound if 0.089 mol weighs 6.86 g?
Follows • 2
Expert Answers •1

03/06/21

How many atoms of argon are in 58.0 L of argon gas at STP?
Follows • 2
Expert Answers •1

03/05/21

What is the empirical formula for ascorbic acid if it contains 41.02% carbon, 4.55% hydrogen, and 54.43% oxygen?
Follows • 1
Expert Answers •1

03/05/21

What mass of carbon dioxide is produced if you burn 80.0 grams of C5H12 with 240.0 grams of O2
Using the equation C5H12 +8O2 ---> 5Co2 + 6H20
Follows • 2
Expert Answers •1

03/05/21

What is the specific heat of the substance? 
An unknown substance weighing 34.7 g was heated from 10.2°C to 68.9°C. In this process, the substance absorbed 788 J of energy. What is the specific heat of the substance? 
Follows • 2
Expert Answers •2

03/05/21

In the reaction above, what is the limiting reagent if 2.0 moles of H2 reacts with 2.0 moles of N2 ?
Follows • 2
Expert Answers •1

03/05/21

Redox reactions

How many mL of 0.150 M solution (MnO4) - are needed to act without residue with 15 mL of 0.250 M solution of Fe2 + ions in acidic environment, if during the redox reaction Fe2 + is oxidized to Fe3... more
Follows • 2
Expert Answers •1

03/05/21

When 28.2 mL of 0.500 M H2SO4 is added to 28.2 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate ΔH of this reaction...
(Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water.) (d for water = 1.00 g/mL; c for... more
Follows • 2
Expert Answers •1

03/05/21

Methylamine (CH3NH2) is a weak base with a Kb = 4.38 x 10-4. What is the pH of a 0.295 M solution of methylamine?
Methylamine (CH3NH2) is a weak base with a Kb = 4.38 x 10-4. What is the pH of a 0.295 M solution of methylamine?
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.