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18 Question 4 photons of 525 nm are collected over a period of 2.5 hours. Calculatehow...
when the metal surface was hit with photons with an Question 9 Not yet answered Suppose...
when the metal surface was hit with photons with an Question 9 Not yet answered Suppose that electrons ejected from the surface of a metal have an energy of 6.4 x 10 energy of 8.4 x 10 J. Calculate the THRESHOLD FREQUENCY of the metal. Marked out of 3.00 P Flag question Select one: 0 2.0 x 10") o 3.02 x 10'05" 0 2.0 x 10-"75" 0 3.02 x 10') o 3.02 x 1052 51
A laser pulse with wavelength 515 nm contains 4.40 mJ of energy. Question: How many photons...
A laser pulse with wavelength 515 nm contains 4.40 mJ of energy. Question: How many photons are in the laser pulse? Can someone please walk me through the steps? I have tried to solve this multiple times, but the 2 answers I thought were for sure it are A: 2.21 x 10^22 photon B: 4.40 Joules X (1 photon/3.860x10^-19 Joules) They were both wrong.
Question 17 of 20 Submit What is the energy of a mole of photons that have a wavelength of 683 nm? (h = 6.626 x 10-...
Question 17 of 20 Submit What is the energy of a mole of photons that have a wavelength of 683 nm? (h = 6.626 x 10-34 Jos and c = 3.00 x 108 m/s) 4 5 8 7 +/- 9 0 x 100 Tap here or pull up for additional resources
Question 4 Not yet answered Marked out of 2 P Flag question A continuous random variable...
Question 4 Not yet answered Marked out of 2 P Flag question A continuous random variable X has the following density function (2x+1) 1<x<3 f(x)= 10 . Find 0, otherwise P( 2 < x < 2.5) = a. 0.275 O b. 2.13 O c.0.1 d. 0.05 Question 5 1
Question 3 of 9 Submit What is the energy of a mole of photons that have a wavelength of 701 nm? (n = 6.626 x 10-34...
Question 3 of 9 Submit What is the energy of a mole of photons that have a wavelength of 701 nm? (n = 6.626 x 10-34 J.S and c = 3.00 x 108 m/s) 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Question 4 A mole of photons has an energy of 392 kJ. What is the wavelength...
Question 4 A mole of photons has an energy of 392 kJ. What is the wavelength of one photon? C 6.80 x 10-31 nm C 3.05 x 10-19 nm C 3.05 x 10-7 nm C 3.05 x 102 nm 6.80 x 102 nm Question 5
Question 4 (1 point) The energy of a 800 nm photon is 2.5 x 10-19 J....
Question 4 (1 point) The energy of a 800 nm photon is 2.5 x 10-19 J. What is the energy of a 200 nm photon? O2.0 x 10-18) 2.0 x 10-19 o 1.0 X 10-18 6.626 x 10-34 O 4.0 x 10-19
Question 4 Not yet answered Marked out of 10.00 The following table shows the number of...
Question 4 Not yet answered Marked out of 10.00 The following table shows the number of pieces of junk mail that arrives in my mailbox each day. X:No. of 2 3 4 5 6 pieces of junk mail P(X) 0.15 0.25 0.3 0.25 0.05 P Flag question What is the probability that 5 or fewer pieces of junk mail will be received today? Select one: a. 0.65 b. 0.85 0.9 o d.o.75
CII 12 UCIICIUL CUCITSUI Y II- CIT 12/TU Question 3 Not yet answered A 0.15 M...
CII 12 UCIICIUL CUCITSUI Y II- CIT 12/TU Question 3 Not yet answered A 0.15 M solution of an unknown monoprotic acid has a pH of 4.57, calculate the K for this unknown acid. You should have two significant figures in your answer and your answer should be in the following format (i.e. 1.0e-3). Marked out of 0.50 Answer: Flag question Question 4 Not yet answered An aqueous solution is made of the diprotic acid H.A to a concentration of...
Question 4 Not yet ao answered For a hydrogen atom in the ground state (R 10...
Question 4 Not yet ao answered For a hydrogen atom in the ground state (R 10 372 e), what is the probability to find the electron between 1.00a, and 1.01ao? (Hint: It is not necessary to evaluate any integrals to solve this problem.) Marked out of 3.00 P Flag question Select one: O a. 0.0240 O b. 0.0054 O c. 0.0147 O d. 0.0490
when the metal surface was hit with photons with an Question 9 Not yet answered Suppose that electrons ejected from the surface of a metal have an energy of 6.4 x 10 energy of 8.4 x 10 J. Calculate the THRESHOLD FREQUENCY of the metal. Marked out of 3.00 P Flag question Select one: 0 2.0 x 10") o 3.02 x 10'05" 0 2.0 x 10-"75" 0 3.02 x 10') o 3.02 x 1052 51
Question 17 of 20 Submit What is the energy of a mole of photons that have a wavelength of 683 nm? (h = 6.626 x 10-34 Jos and c = 3.00 x 108 m/s) 4 5 8 7 +/- 9 0 x 100 Tap here or pull up for additional resources
Question 4 Not yet answered Marked out of 2 P Flag question A continuous random variable X has the following density function (2x+1) 1<x<3 f(x)= 10 . Find 0, otherwise P( 2 < x < 2.5) = a. 0.275 O b. 2.13 O c.0.1 d. 0.05 Question 5 1
Question 3 of 9 Submit What is the energy of a mole of photons that have a wavelength of 701 nm? (n = 6.626 x 10-34 J.S and c = 3.00 x 108 m/s) 1 2 3 +/- 0 x 100 Tap here or pull up for additional resources
Question 4 A mole of photons has an energy of 392 kJ. What is the wavelength of one photon? C 6.80 x 10-31 nm C 3.05 x 10-19 nm C 3.05 x 10-7 nm C 3.05 x 102 nm 6.80 x 102 nm Question 5
Question 4 (1 point) The energy of a 800 nm photon is 2.5 x 10-19 J. What is the energy of a 200 nm photon? O2.0 x 10-18) 2.0 x 10-19 o 1.0 X 10-18 6.626 x 10-34 O 4.0 x 10-19
Question 4 Not yet answered Marked out of 10.00 The following table shows the number of pieces of junk mail that arrives in my mailbox each day. X:No. of 2 3 4 5 6 pieces of junk mail P(X) 0.15 0.25 0.3 0.25 0.05 P Flag question What is the probability that 5 or fewer pieces of junk mail will be received today? Select one: a. 0.65 b. 0.85 0.9 o d.o.75
CII 12 UCIICIUL CUCITSUI Y II- CIT 12/TU Question 3 Not yet answered A 0.15 M solution of an unknown monoprotic acid has a pH of 4.57, calculate the K for this unknown acid. You should have two significant figures in your answer and your answer should be in the following format (i.e. 1.0e-3). Marked out of 0.50 Answer: Flag question Question 4 Not yet answered An aqueous solution is made of the diprotic acid H.A to a concentration of...
Question 4 Not yet ao answered For a hydrogen atom in the ground state (R 10 372 e), what is the probability to find the electron between 1.00a, and 1.01ao? (Hint: It is not necessary to evaluate any integrals to solve this problem.) Marked out of 3.00 P Flag question Select one: O a. 0.0240 O b. 0.0054 O c. 0.0147 O d. 0.0490
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