What is the quantum of light called

Reference no: EM13129289

What is the quantum of light called?
1. What is the quantum of light called?
a. the amplitude
b. the frequency
c. a photon
d. the wavelength

2. What is the oxidation number CHANGE for the iron atom in the reaction:
2 Fe2O3(s) + 3 C(s) --> 4 Fe(s) + 3 Co2(g)?

a. -6
b. -3
c. +3
d. +6

3. Of the following, which element has the highest first ionization energy?

a. aluminum
b. magnesium
c. silicon
d. sodium

4. The reaction of Cu(s) + 2 AgNO3(aq) --> Cu(NO3)2(aq) + 2 Ag(s) is best classified as a(n)

a. acid-base neutralization reaction
b. double replacement reaction
c. oxidation-reduction reaction
d. precipitation reaction

5. The average osmotic pressure of blood is about 7atm. Therefore,

a. the average blood pressure is about 7atm
b. the average pressure inside the body is about 7 atm above the external pressure.
c. a pressure of about 7atm would be required to prevent osmosis of blood is in contact with pure water across a semipermeable membrane.
d. all of the above

6. What is the smallest bond angle of SF6?

a. 60 degrees
b. 90 degrees
c. 109.5 degrees
d. 120 degrees

7. Calculate the work, w, done on the surroundings when a gas expands from 15L to 35L against a constant external pressure of 1.5atm. [1L.= 101J]

a. -5.3kJ
b. -3.0kJ
c. +3.0kJ
d. +5.3kJ

8. How many significant figures are there in the answer for the following problem?

57.5 + 0.9933 32 = ?

a. one
b. two
c. three
d. four

9. Which element has the highest first electron affinity?

a. B
b. C
c. Li
d. N

10. Which of the intermolecular forces is the most important contributor to the high surface tension shown by water?

a. dipole-dipole forces
b. dispersion forces
c. hydrogen bonding
d. ion-dipole forces

Reference no: EM13129289

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