Franklin

Hi, My name is Franklin. I have a question on financial investment. Sue and Tom Wright are assistant professors at the local university. They each take home about $40,000 per year after taxes. Sue is 37 years of age, and Tom is 35. Their two children, Mik...

18 years ago

0.717 g of a compound containing carbon, hydrogen, and oxygen is burned and found to produce 1.02 g CO2 and 0.624 g H2O. The molar mass of the compound is 124 g/mol. (a) Write a chemical equation for the combustion of this unknown hydrocarbon. (b) Determi...

14 years ago

When sodium Metal is dropped into water, all the metal reacts in the equation shown below. What mass of hydrogen is liberated from a 46.0 gram piece of sodium? 2Na(s)+2H2O(I) > 2NaOH(aq)+H2(g)

13 years ago

Find the pH and volume (mL) of 0.447 M HNO3 needed to reach the equivalence point(s) in titrations of each of the following. (a) 2.65 L of 0.0950 M pyridine (C5H5N) pH volume Answer = 563 mL (b) 0.188 L of 0.250 M NH3 pH volume Answer = 105 mL I can't fig...

12 years ago

When a diprotic acid, H2A, is titrated by NaOH, the protons on the diprotic acid are generally removed one at a time, resulting in a pH curve that has the following generic shape. (a) Notice that the plot has essentially two titration curves. If the first...

12 years ago

(ii) between 0 and 100.0 mL NaOH added H2A H2O HA - Na+ A2- OH - (iii) 100.0 mL NaOH added H2A H2O HA - Na+ A2- OH - (iv) between 100.0 mL and 200.0 mL NaOH added H2A H2O HA - Na+ A2- OH - (v) 200.0 mL NaOH added H2A H2O HA - Na+ A2- OH - (vi) after 200.0...

12 years ago

In a laboratory, scientists often study neurons in isolation, outside of a living creature, in a dish. In this setting, one can have a good deal of control over the local ionic environment in which the cell exists, because we can control the makeup of the...

11 years ago

Aqua dude can swim at a speed of 2.0m/s in still water. A river is 48 m wide and has a current of 1.5 m/s [E]. He starts at the Southbank and swims so that he is always headed directly across the river. A) what is Aqua dudes velocity relative to the shore...

10 years ago

Suppose that the mosquito population of the world is 36000000 and that these mosquitoes can be packed into a cubic box with no space wasted. If the average volume of the mosquito is 6mm^3,how long would the edge of the box have to be?

9 years ago

For How Long Must A Current Of 1.5 Ampere Be Passed Through An Aqueous Solution Of A Copper Salt During Electrolysis In Order To Deposit 2.50g Of Copper (cu=63.5)

8 years ago

0.222g Of A Divalent Metal Is Deposited When A Current Of 0.45 Amperes Is Passed Through A Solution Of It's Salt For 25 Minutes Using Appropriate Electrodes. Calculate The Relative Atomic Mass Of The Metal. (1 Faraday =96500c/mol)

8 years ago

(x=72 s=32 o= 16 H=1)

4 years ago

Using words, explain how you would prepare 0.75L of the 0.12 M aqueous solution of AgNO3 in the laboratory, starting with deionized water and solid AgNO3. In your response, refer to the mass of AgNOs that you calculated in part (e) The mass I calculate in...

3 years ago

Calculate the molarity of a solution containing 15 mg of CuS04 × 5H20 in 1.00 L of solution. (6 pts) MY ANSWER 15 mg = 0.015 g. And the molar mass is 249.72 g / mol. So then we do 0.015 / 249.72 x1.00 = 0 00006007 mol L. or 6.01 x10^-5 mol I 6. Explain in...

3 years ago

In a class of 40 student, a student can study french or history or both , if 20 study french , 23 study history and 7 study neither . How many students study both subject

3 years ago

The Arithmetic progression?

13 years ago

2/3 divided by 5 is 2/3 x 1/5 = 2/15. Now Bob eats twice as much as the others, therefore you may view it as if you were to divide something in three parts, Bob eat two of those parts. Final Answer: 2/3 * 2/15 = 4/45 OptimalLearningSolutions @ gmail

13 years ago

never mind, I figured this one out. Thanks!

12 years ago

Thank you!

12 years ago

Sorry, I forgot the question. For the following volumes of NaOH added, list the major species present after the OH - reacts completely. I feel like I'm always missing something. For example, I thought (ii) was H2A HA- OH - and H2O,but it was wrong

12 years ago

The [NaOH] was never given in the question. Only the total mL.

12 years ago

Dr. Bob, you are amazing.I was completely stuck. Thank you so much!

12 years ago

Second Question: What is the Nernst potential for Cl- in DMEM at 37C?! Check the best option! • 80 mV! • -80 mV! • 61 mV! • -61 mV! Third question: What is the Nernst potential for Na+ in DMEM at 37C?! Check the best option! • 73 mV! • -73 mV! • 63 mV! •...

11 years ago

You know 3/4 of the members wear glasses and members who don't wear glasses 1/3 are male. Make a model 4 boxes. Split the 4 boxes into 3s one of the thirds fill in one. Now make your fraction that's your awnser you should of got 1/12

7 years ago

I need the workings

4 years ago

Birchleigh Students Where u at??? I know yall are hella smart and will answer this perfectly #LO-QUESTION-1.3

4 years ago

Reiny, you are not right. The textbook answers say otherwise. 😡😡😡

3 years ago

Thank you so much

3 years ago