rohanali16593

What is farming along with animal husbandry called?

[A] Mixed farming
[B] Mixed agriculture
[C] Truck farming
[D] Dairy farming

How does a pay raise mostly likely affect an employee’s earnings record?

1).The proton gradient across the inner mitochondrial membrane drives the ATP synthase enzyme to make ATP from ADP and Pi. Where is that proton gradient in prokaryotes? (Choose ONE answer)

A metabolic pathway is

A) a series of separate chemical reactions that together accomplish a complex chemical transformation.

B) a set of chemical transformational steps, each with a specific enzyme.

C) a means for transforming cellular energy.

D) vulnerable to inhibitors and activators that target some key enzymes.

E) All of the above

Which is the first oxygen producing organsim?

A nerve impulse is

The Wiley Oakley Co. has just gone public. Under a firm commitment agreement, the company received $20.55 for each of the 6.54 million shares sold. The initial offering price was $22.40 per share, and the stock rose to $28.91 per share in the first few minutes of trading. The company paid $904,000 in legal and other direct costs and $179,000 in indirect costs.

What is the net amount raised? (Do not round intermediate calculations. Enter your answer in dollars, not millions of dollars, e.g., 1,234,567. Round your answer to the nearest whole number, e.g., 32.)

Net amount raised $

What are the total direct costs? (Do not round intermediate calculations. Enter your answer in dollars, not millions of dollars, e.g., 1,234,567. Round your answer to the nearest whole number, e.g., 32.)

Direct costs $

What are the total indirect costs? (Do not round intermediate calculations. Enter your answer in dollars, not millions of dollars, e.g., 1,234,567. Round your answer to the nearest whole number, e.g., 32.)

Indirect costs $

What are the total costs? (Do not round intermediate calculations. Enter your answer in dollars, not millions of dollars, e.g., 1,234,567. Round your answer to the nearest whole number, e.g., 32.)

Total costs $

What was the flotation cost as a percentage of funds raised? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Flotation cost percentage %

Use the information below to answer the following questions.

a. If you have $100, how many Polish zlotys can you get? (Do not include the Polish zlotys sign (Z). Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.)

Amount Z

b. How much is one euro worth in U.S. dollars? (Do not round intermediate calculations and round your answer to 4 decimal places, e.g., 32.1616.)

Dollar value of one euro $

c. If you have 4.50 million euros, how many dollars do you have? (Enter your answer in dollars, not millions of dollars, e.g., 1,234,567. Do not round intermediate calculations and round your answer to the nearest whole number, e.g., 32.)

Amount $

d. Which is worth more, a New Zealand dollar or a Singapore dollar?

(Click to select)Singapore dollarNew Zealand dollar

e. Which is worth more, a Mexican peso or a Chilean peso?

(Click to select)Chilean pesoMexican peso

f. How many Swiss francs can you get for a euro? (Do not round intermediate calculations and round your answer to 4 decimal places, e.g., 32.1616.)

Amount SF/€

Suppose 100.0 mL of a 0.03750 M solution of the strong baseBa(OH)2 is titrated with a 0.4540M solution of the strong acidHClO4. The neutralization reaction is

BA(OH)2 (aq) + 2HClO4(aq) ---> Ba(ClO4)2(aq) + 2H2O(l)

Compute the pH of the titration solution before any acid is added,when the titration is 1.00 mL short of the equivalence point, whenthe titration is at the equivalence point, and when the titrationis 1.00 mL past the equivalence point. (Note: each mole of Ba(OH)2gives two moles of OH- in solution.)

A certain weak acid, HA,with a Kavalue of 5.61x10^(-6), is titrated with NaOH.

A.) A solution is made by mixing 9.00

mmol(millimoles) of HAand 1.00mmolof the strong base. What is the resulting pH?

pH = 4.35

B.)Morestrong base is added until the equivalence point is reached. Whatis the pH of this solution at the equivalence point if the totalvolume is 80.0 mL?

pH=??????

I got A can't understand how to do B plz help.

Calculate the pH at the halfway point and at the equivalence point for each of the following titrations. (Assume that the temperature is 25°C.) (a) 104.6 mL of 0.19 M HNO2 (Ka= 4.0 ✕ 10−4) titrated with 0.19 M KOH halfway point equivalence point (b) 104.5 mL of 0.18 M (C2H5)3N (Kb = 4.0 ✕ 10−4) titrated with 0.36 M HCl halfway point equivalence point

Predict whether the equivalence point of each of the followingtitrations is below, above, or at pH= 7:

1. NaHCO3 titrated with NaOH
2. NH3 titrated with HCl
3. KOH titrated with HBr

Two 20.0mL samples , one .200M KOH and the other .200M CH3NH2,were titrated with .100M HI.

What is the volume of the added acid at the equivalence point foreach titration?/
Predict whether the pH at the equivalence point for each titrationwill be acidic, basic, or neutral.
Predict which titration curve will have the lower initial pH.
Make a rough sketch of each titration curve.

a. A student obtains a vinegar solution having an acetic acidconcentration of 0.8512 M. What volume of 0.1036 M NaOH will berequired to reach the equivalence point when 25.00 mL of thevinegar solution is titrated?

b. A student dilutes the vinegar solution in part a above bypipetting 10 mL of the solution into a 100 mL volumetric flask anddiluting to a total volume of 100 mL. What volume of 0.1036 M NaOHwill be required to reach the equivalence point when 100 mL of thediluted vinegar solution is titrated?

c. What volume of 0.1036 M NaOH will be required to reach theequivalence point when 25 mL of the diluted vinegar solutionprepared in part b is titrated?

A benzoic acid solution was prepared by adding 0.488 gbenzoicacid to a 100 mL volumetric flask and then adding enoughwater tobring the total solution volume to 100.00 mL. How manymillilitersof 0.0989 M NaOH are required to titrate theentirebenzoic acid solution to the equivalence-point? What is thepH atthe equivalence-point?

If the experiment were repeated using the same mass ofbenzoicacid and a 50 mL volumetric flask instead of a 100 mLvolumetricflask, how many milliliters of 0.0989 M NaOHwould berequired to titrate the entire benzoic acid solution totheequivalence-point?

You need to determine the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. You have a 0.1920 M standard solution. You take a 25.00 mL sample of the original acid solution and dilute it to 250.0 mL. You then take a 10.00 mL sample of the dilute acid solution and titrate it with the standard solution. You need 19.18 mL of the standard solution to reach the endpoint. What is the concentration of the original acid solution?

An old sample of concentrated sulfuric acid to be used in thelaboratory is approximately 97.7% H2SO4 by mass. Calculate themolality and molarity of the acid solution. The density of thesolution is 1.8g/mL

A solution of ethanol (C₂H₅OH)in water is prepared by dissolving 76.4 mL of ethanol (density = 0.79 g/cm³)in enough water to make 250.0 mL of solution. What is the molarityof the ethanol in this solution?
M

An impure sample of oxalic acid (H2C2O4) wasoxidized by potassium permanganate. A 0.261-g sample of oxalic acidwas dissolved, and the solution was diluted to 100.0 mL. A 25.0-mLportion of the oxalic acid solution was titrated with 26.2 mL of0.0107 M potassiumpermanganate.

a) write a balanced equationfor the titration reaction.

b)how many moles of potassiumwere used? (ans: 2.8 x10^-4 mol)

c)How many moles of oxalicacid were titrated? (ans: 7.01X10^-4 mol)

d)Calculate the percent purityof the oxalic sample. (ans: 96.7%)

please shows steps, thankyou

4) (6 points) A 0.1278 g sample of primary standard Na2C2O4 is diluted to 100.00 mL with water and made slightly acidic before titration with a potassium permanganate solution of unknown concentration. The titration required exactly 33.31 mL of the potassium permanganate (KMnO4) solution.

a. Write and balance the Redox reaction in acidic solution.

b. Identify the oxidizing agent and the reducing agent on the left side of the reaction.

c. Calculate ΔEº=EºOx – EºRed . Is the reaction thermodynamically favored?

d. Calculate the equilibrium constant of the reaction.

e. Calculate the concentration of permanganate solution. MnO4- + H2C2O4 Mn2+ + CO2 Na2C2O4: 133.999 g/mol E° = 0.49 V for 2CO2(g) + 2H+(aq) + 2e− → H2C2O4(aq)

I am working on this lab but can't seem to figure out how tofinish it.

1. For the NEW bottle of hydrogenperoxide, record and calculate the following:

3. Reactions (equalize with half-reactions):

3.1. Potassium sulfite potassium permanganate potassium hydroxide

3.2. Potassium dichromate hydrogen sulfide sulfuric acid

3.3. Zinc sulfuric acid, diluted 

3.4. Lead (IV) oxide hydrochloric acid