12/02/18

what are the processes of dissociation of a range ionic substances and acids and bases.
What are the processes of dissociation of range of ionic substances and acids and basses? I don't know what they are or what examples that relate to this?
Follows • 1
Expert Answers •1

12/01/18

Do Pheromones have smell?
Can your nose smell pheromones? Do they have a specific smell? How do they smell? How do you know when you have smelled someone's pheromones? What reaction should you expect to have when you smell... more
Follows • 1
Expert Answers •1

12/01/18

What is the pH of this solution?
A 1.7 L solution is made with water and 0.23 g of HNO3 (MW = 63.01 g/mol). What is the pH of this solution? I am having a hard time with this question and would like some help. Here's what I have... more
Follows • 1
Expert Answers •1

12/01/18

True or False: A correlation coefficient tells you how closely the points fit to the linear regression?
Follows • 0
Expert Answers •1

12/01/18

Do you have a sample of 5.6 g of ethene, C2H4 and completely react with the oxygen in the air? How many moles of carbon dioxide and what mass of water is obtained?
Follows • 1
Expert Answers •1

11/30/18

Need help I am stumped
What is the answer, The second of two numbers is 9 more than 4 times the first. Their sum is 98. Find the numbers.
Follows • 1
Expert Answers •1

11/30/18

How many mL OF .755 M H2SO4 solution is needed to react with 55 mL of 2.50 M KOH solution
Follows • 1
Expert Answers •1

11/30/18

Equilibrium help

the reactions for 1 and 2 below, take place at 20°C, and answer the following questions.1) H​2S​ O​3(​ g) ⟶ SO​2(​ g) + H​2​O(g) △Go​ ​ = +25kJ mol-​ 12) H​2(​ g) + Cl​2(​ g) ⟶ 2 HCl(g) △Go​ ​ =... more
Follows • 1
Expert Answers •1

11/30/18

pharmaceutical calculations help!

Digoxin (Lanoxin) pediatric elixir contains 0.05 mg of digoxin in each milliliter of elixir. How many milligrams of digoxin would be administered with a dose of 0.6 mL?
Follows • 1
Expert Answers •1

11/30/18

What is the molecular geometry and why?

XeCl​2​ , ICl​3​ , TeF​4​ , PCl​5what is the molecular geometry of these and why
Follows • 1
Expert Answers •1

11/30/18

The density of water at 4 degrees Celsius is 8.33 pound/gallon. How much will 5 gallons water weigh at the same temperature?
wiefuhewqruifuh9egfhi9uerbfivuerhif
Follows • 1
Expert Answers •1

11/30/18

The density of ice is 0.92 g/cc at 0 degrees Celsius and the density of water at 4 degrees Celsius is 8.33 pound/gallon. How much will 5 gallons ice weigh at 0 degrees Celsius?
help sos pls I'm almost done with this class lol help sos thank you
Follows • 1
Expert Answers •1

11/30/18

Each side of the cube measures 3cm and the mass of the cube is 12g
What is the approximate density of the cube?
Follows • 2
Expert Answers •1

11/29/18

What is the mass (in mg) of the sample? And what is the mass 6 weeks after the start?
The half life of Palladium-100 is 4 days. After 20 days a sample of Palldium-100 has been reduced to a mass of 3 mg.
Follows • 1
Expert Answers •2

11/29/18

Find the milliliters of 0.220 M KOH needed to neutralize 85.0 mL of 0.816 M H3PO4. Balance the chemical equation and show your work using one chain of conversion factors in your calculation.

Follows • 1
Expert Answers •1

11/29/18

A student is asked to prepare 1.0 L of Buffer at pH 4.55 using 0.10 M of acetic acid and 0.10 M of sodium acetate. Calculate

A student is asked to prepare 1.0 L of Buffer at pH 4.55 using 0.10 M of acetic acid and 0.10 M of sodium acetate. Calculate what volume of the two buffers the student would need to mix to obtain... more
Follows • 1
Expert Answers •1

11/29/18

A student titrated Calcium Hydroxide solution with 0.05167M HCl at three different temperatures and collected the following data in

A student titrated Calcium Hydroxide solution with 0.05167M HCl at three different temperatures and collected the following data in lab. Determine the solubility product constant of Ca(OH)2 at each... more
Follows • 1
Expert Answers •1

11/29/18

How to find moles of DCP
If I have a volume of 5.5 DCP titrated how do I find the moles? I think I need to multiply, but I'm not sure.
Follows • 1
Expert Answers •1

11/29/18

How to find number of moles removed
I can't figure out how to find the number of moles removed from a volumetric flask to a erlenmeyer flask. I have a mass of 0.11g ascorbic acid (6.2*10^-5 moles) and the molarity is 6.2*10^-4. My... more
Follows • 1
Expert Answers •1

11/29/18

Ionic vs. Covalent
I am doing a lab where I need to determine if a substance is ionic or covalent. I have done a conductivity test and a melting point test, but my results were not conclusive. When the substance was... more
Follows • 1
Expert Answers •1

11/28/18

A buffer contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00L
A buffer contains 0.10 mol of acetic acid and 0.13 mol of sodium acetate in 1.00L a) What is the pH of the buffer? b) What is the pH of the buffer after the addition of 0.02 mol of KOH? c) What is... more
Follows • 1
Expert Answers •2

11/28/18

An amp to start playing the electric guitar
I am going to begin playing the electric guitar and for that I will need an amp. But I don't want to pay a lot of money for it. Which amp schould I buy. Has anyone any suggestions?
Follows • 2
Expert Answers •6

11/28/18

Based on ion charges and relative ion sizes, rank these ionic compounds by their expected melting points.
SrCl2CsBrRbClSrS
Follows • 1
Expert Answers •1

11/28/18

I need help on finding the initial equilibrium concentrations

A+2B=3cthe reaction mixture is samples prior to the equilibrium being reached. It is determined that the reaction must proceed to the left for equilibrium to be reached. When the reaction mixer is... more
Follows • 1
Expert Answers •1

11/28/18

How to find initial concentration
A+2B=3cthe reaction mixture is samples prior to the equilibrium being reached. It is determined that the reaction must proceed to the left for equilibrium to be reached. When the reaction mixer is... more
Follows • 1
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.