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By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with certain speeds. When HI dissociates, the H atoms move away rapidly, whereas the heavier I atoms move more slowly. (a) If a photon of 231 nm is used, what is the excess energy (in J) over that needed for dissociation? (b) If this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)? (Bond energy of H―I is 295 kJ/mol.) Enter your answers in scientific notation.

By using photons of specific wavelengths, chemists candissociate gaseous HI to produce H atoms with accurately knownspeeds. When HI dissociates, the H atoms move away rapidly, whereasthe relatively heavy I atoms move little. (The average bond energyof H--I is 295 kJ/mol.) (a) What is the longest wavelength (in nm)that can dissociate a molecule of HI? (b) If a photon of 200. nm isused, what is the excess energy (in J) over that needed for thedissociation? (c) If all of this excess energy is carried away bythe H atom as kinetic energy, what is its speed (in m/s)?

what is your name ?

By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions:

(a) What is the longest wavelength (in nm) that can dissociate a molecule of HI?

(b) If a photon of 294 nm is used, what is the excess energy (in J) over that needed for the dissociation?

(c) If all of this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?

By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with certain speeds. When HI dissociates, the H atoms move away rapidly, whereas the heavier I atoms move more slowly.

If a photon of 282 nm is used, what is the excess energy (in J) over that needed for dissociation?

If this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?

By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions: (

a) What is the longest wavelength (in nm) that can dissociate a molecule of HI?

My answer is 406 nm, and that was correct.

(b) If a photon of 243 nm is used, what is the excess energy (in J) over that needed for the dissociation?

__J

(c) If all of this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?

__

I need help with b and c

By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions:(a) What is the longest wavelength (in nm) that can dissociate a molecule of HI? 406 nm(b) If a photon of 201 nm is used, what is the excess energy (in J) over that needed for the dissociation? ___________J (c) If all of this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?_______m/s

By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with accurately known speeds. When HI dissociates, the H atoms move away rapidly, whereas the relatively heavy I atoms move little. Use Table 9.2 in your textbook to answer the following questions:

(a) What is the longest wavelength (in nm) that can dissociate a molecule of HI?
406 nm

(b) If a photon of 299 nm is used, what is the excess energy (in J) over that needed for the dissociation?
1.76E-19 J

(c) If all of this excess energy is carried away by the H atom as kinetic energy, what is its speed (in m/s)?

???

Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines. Use Lewis structures and bond energies to determine H for the reaction below. (See Table 9.2 for bond energies.)

I've tried

148.95 - incorrect

-148.95 - incorrect, it says 10 percent off, and may be due to roundoff error

1. Use bond energies to calculate the enthalpy of reaction (using the values given in the Table below):

Si-P

N-O

C-H

O-H

C-O

Please explain.

Exceptional Electronics began operations September 1, 2019. The firm sells its merchandise for cash and on open account. Sales are subject to a 7 percent sales tax. During September, Exceptional Electronics engaged in the following transactions:

Required:
Record the transactions in a general journal.

Analyze:
What portion of the sales during September were for entertainment items? Assume the cash sales transactions are for non-entertainment items. (Hint: Do not forget to reduce sales by any sales returns or allowances.)

Exceptional Electronics began operations September 1, 2019. Thefirm sells its merchandise for cash and on open account. Sales aresubject to a 7 percent sales tax. During September, ExceptionalElectronics engaged in the following transactions:

Required:
Record the transactions in a general journal.

Analyze:
What portion of the sales during September were for entertainmentitems? Assume the cash sales transactions are for non-entertainmentitems. (Hint: Do not forget to reduce sales by any sales returns orallowances.)

Sold a high-definition television set on credit to Candy Cho;issued Sales Slip 101 for $2,700 plus sales tax of $189.

Note: Enter debits before credits.

Sold stereo equipment on credit to Jim Peterson; issued SalesSlip 102 for $900 plus sales tax of $63.

Note: Enter debits before credits.

Sold a microwave oven on credit to Bridgette Huffman; issuedSales Slip 103 for $300 plus sales tax of $21.

Note: Enter debits before credits.

Accepted return of defective stereo equipment from Jim Peterson;issued Credit Memorandum 101 for $100 plus sales tax of $7. Thestereo equipment was sold on September 3.

Note: Enter debits before credits.

Recorded cash sales for the period from September 1 to September15 of $9,500 plus sales tax of $665.

Note: Enter debits before credits.

Sold a gas dryer on credit to Kathy Sundstrand; issued SalesSlip 104 for $600 plus sales tax of $42.

Note: Enter debits before credits.

Sold a home entertainment system on credit to Mark Navalta;issued Sales Slip 105 for $1,700 plus sales tax of $119.

Note: Enter debits before credits.

Received $730 from Candy Cho on account.

Note: Enter debits before credits.

Received payment in full from Jim Peterson for the sale ofSeptember 3, less the return of September 12.

Note: Enter debits before credits.

Gave Mark Navalta an allowance because of scratches on his homeentertainment system sold on September 17, Sales Slip 105; issuedCredit Memorandum 102 for $200 plus sales tax of $14.

Note: Enter debits before credits.

Received payment in full from Bridgette Huffman for the sale ofSeptember 7.

Note: Enter debits before credits.

Sold a dishwasher on credit to Mark Navalta; issued Sales Slip106 for $400 plus sales tax of $28.

Note: Enter debits before credits.

Recorded cash sales for the period from September 16 toSeptember 30 of $11,400 plus sales tax of $798.

Note: Enter debits before credits.

Geoff and Sandy Harland own and operate Wayward Kennel and PetSupply. Their motto is, “If your pet is not becoming to you, heshould be coming to us.” The Harlands maintain a sales tax payableaccount throughout the month to account for the 6% sales tax. Theyuse a general journal, general ledger, and accounts receivableledger. The following sales and cash collections took place duringthe month of September:

Wayward had the following general ledger account balances as ofSeptember 1:

Beginning customer account balances were:

Wayward also had the following accounts receivable ledgerbalances as of September 1:

New customers opening accounts during September were asfollows:

Required:

Entertainment Inc. is a retail store that rents movies and sells music CDs over the Internet. The firm’s cash receipts for February and the general ledger accounts used to record these transactions are shown below.

GENERAL LEDGER ACCOUNTS

Required:

Open the general ledger accounts and enter the balances as of February 1, 2019.

Record the transactions in a cash receipts journal.

Post the individual entries from the Other Accounts Credit section of the cash receipts journal to the proper general ledger accounts.

Total, prove, and rule the cash receipts journal as of February 28, 2019.

Post the column totals from the cash receipts journal to the proper general ledger accounts.

Analyze:
What total accounts receivable were collected in February?

Entertainment Inc. is a retail store that rents movies and sells music CDs over the Internet. The firm’s cash receipts for February and the general ledger accounts used to record these transactions are shown below.

GENERAL LEDGER ACCOUNTS

Required:

Open the general ledger accounts and enter the balances as of February 1, 2019.

Record the transactions in a cash receipts journal.

Post the individual entries from the Other Accounts Credit section of the cash receipts journal to the proper general ledger accounts.

Total, prove, and rule the cash receipts journal as of February 28, 2019.

Post the column totals from the cash receipts journal to the proper general ledger accounts.

Analyze:
What total accounts receivable were collected in February?

Post the opening balances and transactions into the appropriate ledger accounts.

General Ledgers

Cash Receipts

Analyze

how do certain topics and themes stay revlavent across time periods, while others do not

47 Carion sells the following goods for cash during January:

5 Jan to Maurice K 386 68

19 Jan to Harris K 715 125

28 Jan to Merton K 430 75

What are the correct entries in Carion’s general ledger?

A Dr Sales K1, 799 Dr Sales tax K268 Cr Cash K2, 067

B Dr Cash K2, 067 Cr Sales K1, 799 Cr Sales tax K268

C Dr Sales K1, 531 Dr Sales tax K268 Cr Cash K1, 799

D Dr Cash K1, 799 Cr Sales K1, 531 Cr Sales tax K268

Explain your answer

i’m so lost on this

Answer this 1

A glucose solution contains 55.8g of glucose (C6H12O6) in 455 g of water. Compute the freezing point and boiling point of the solution. (Assume density of 1.00g/mL for water.) Kb = 0.512 degrees C/m and Kf = 1.86 degrees C/m

6. The freezing point of a glucose solution ( C6H12O6;molar mass= 180.0 g/mole) is - 10.3 °C . The density of the solution is 1.50 g/ml. What is the molarity of the glucose solution? ( Kf for water is 1.86 °C.kg/mole)

Answer: 4.16 mole/L

Calculate the freezing point of a solution of 60.0 g of NaCl(assume complete dissociation) dissolved in 500.0 g of water. Kf =1.86 C/m and Kb = 0.512 C/m

"Calculate the freezing point of a solution made by dissolving 85.0 g of glucose (C6H12O^) a nonvolatile, non electrolyte solute in 340. g of water? (Kf = 1.86 C/m and Kb = 0.512 C/m for Water)"

A. + 3.40 C

B. + 2.58 C

C. + 0.71 C

D. - 0.71 C

E. - 2.58 C

A glucose solution contains 54.8 g of glucose (C6H12O6) in 435 g of water. (Assume a density of 1.00 g/mL for water, Kf and Kb for water are 1.86 ∘C/m and 0.512 ∘C/m, respectively.)

Calculate the freezing point of the solution.

Which of the following represents a 1.00 M aqueuos solution of glucose (C6H12O6) a. 90g glucose per 500mL of water b. 10g glucose per 10mL of water c. 0.1g glucose per mL solution d. 0.180g of glucose per mL of solution e. 4.5g of glucose per 4.5g of water f. none of the above

Calculate the molality of a glucose (C6H12O6) in a solution prepared by dissovling 40.0g of glucose in 500mL of water (density of water - 1.00 g/mL).

A solution contains 22.4 g glucose, C6H12O6, dissolved in 0.500 L of water. What is the molality of the solution? Assume a density of 1.00 g/mL for water

Calculate the molality of a solution containing 292gglucose(C6H12O6) dissolved in 1.91L of water. (Assume a density of1.00 g/mL for water)

Calculate the molality of a solution containing 255g glucose(C6H12O6) dissolved in 1.55L of water. (Assume a density of 1.00 g/mL for water.)

calculate the molality of a solution prepared by dissolving 9.18 g of glucose (C₆H₁₂O₆) in 100 mL of water.

(density of water = 1.00 g/mL)

Calculate the molality of a solution made by dissolving 34.0 g of NH3 in 2.00 x 103 mL of water (MMNH3 = 17.04 g/mol, dH2O = 1.00 g/mL

A solution is 5.66 % by mass NH3 (MM 17.04 g/mol) in water (MM 18.02 g/mol). The density of the resulting solution is 0.974 g/mL. What is the mole fraction, molarity and molality of NH3 in the solution?

A solution is prepared with 15.0 g of NH3 (MW 17.03) in 250.0 g of water. The density of the resulting solution is 0.974 g/mL. What is the molarity of the NH3 solution?

the answer is 3.24M but I dont know how to get it..please explain

a solution is prepared by dissolving 11.0g of nh3 in 250.0g of water. the density of the resulting solution is 0.974 g/ml. the mole fraction of nh3 in solution is?

0.0445 (answer). How did they get that answer?

A solution is prepared by dissolving 11.0 g of NH₃ in 250.0 g of water. The density of the resulting solution is 0.974 g/mL. The mole fraction of NH₃ in the solution is ________.