Q: What is the frequency of 540 nm red light in that universe?

$$5.6 \times 10$$^{14}$$ \ \mathrm{s}^{-1}$$

Q: What is the frequency of a photon emitted from a hydrogen atom when an electron relaxes from the $$n=2$$ orbital to the $$n=1$$ orbital?

$$2.47 \times 10$$^{15}$$ \ \mathrm{s}^{-1}$$

Q: To what speed must an electron be accelerated to attain a wavelength of $$200$$ picometers? (The mass of an electron is $$9.11 \times 10$$^{-31}$$ kg)

$$3.6 \times 10^6$ \ \mathrm{m/s}$$

Q: What is the de Broglie wavelength of a $$60 kg $$person running at $$10 m/s$$?

$$1.1 \times 10$$^{-35}$$ \ \mathrm{m}$

Question 1

What is the frequency of 540 nm red light in that universe?

Accepted Answer

$$5.6 	imes 10$$^{14}$$ \ \mathrm{s}^{-1}$$

Question 2

What is the electron configuration of a Magnesium ion in the $$2+$$ oxidation state?

Accepted Answer

$$1s^2$$ $$2s^2$$ $$2p^6$$

Question 3

What is the frequency of a photon emitted from a hydrogen atom when an electron relaxes from the $$n=2$$ orbital to the $$n=1$$ orbital?

Accepted Answer

$$2.47 	imes 10$$^{15}$$ \ \mathrm{s}^{-1}$$

Question 4

The uncertainty principle states that you cannot know both the exact position and the exact __________ of a particle.

Accepted Answer

Momentum

Question 5

Which of the following is a valid set of quantum numbers?

Accepted Answer

$$n=3, \ l=2, \ m_l=0, \ m_s=+1/2$$

Question 6

How many angular nodes exist in a $$d$$ orbital?

Accepted Answer

2

Question 7

The electron configuration $$1s^2$$ $$2s^2$$ $$2p^6$$ $$3s^2$$ $$3p^1$$ corresponds to which element?

Accepted Answer

Al

Question 8

What two elements have the same number of $$s$$ electrons as $$p$$ electrons?

Accepted Answer

Magnesium and Oxygen

Question 9

Which is the correct net ionic equation for the reaction of aqueous ammonia with nitric acid?

Accepted Answer

$$NH_3 (aq) + H^+ (aq$$) \rightarrow $$NH_4^+ (aq$$)$$

Question 10

A pulse of electromagnetic radiation has a total energy of $$2.5 \ \mathrm{J}. $$How many photons are in this pulse if the wavelength is $$540 \ \mathrm{nm}$$?

Accepted Answer

$$1.9 	imes 10$$^{19}$$

Question 11

Which solution would contain 3 moles of ions for every mole of compound dissolved in water?

Accepted Answer

FeCl$$_3$$

Question 12

Which of the following compounds is a strong electrolyte when dissolved in water?

Accepted Answer

Ca(Br)$$_2$$

Question 13

To what speed must an electron be accelerated to attain a wavelength of $$200$$ picometers? (The mass of an electron is $$9.11 	imes 10$$^{-31}$$ kg)

Accepted Answer

$$3.6 	imes 10^6$ \ \mathrm{m/s}$$

Question 14

At $$40^{\circ}C$$, which of the following liquids does NOT conduct electricity?

Accepted Answer

Water

Question 15

What is the net ionic reaction between HCl and AgNO$$_3$$?

Accepted Answer

$$Cl^- (aq) + Ag^+ (aq) \rightarrow AgCl (s)$$

Question 16

A $$47.28 mL $$sample of $$4.35 M H$_2SO$_4$$ was titrated with $$13.00 mL of $$KOH. What is the molarity of the initial KOH solution?

Accepted Answer

$$15.82 M$$

Question 17

What is the de Broglie wavelength of a $$60 kg $$person running at $$10 m/s$$?

Accepted Answer

$$1.1 	imes 10$$^{-35}$$ \ \mathrm{m}$

Question 18

If a solution of AgNO$$_3 is $$mixed with BaCl$$_2$$, what is the identity of the precipitate?

Accepted Answer

AgCl

Question 19

If $$0.90$$ grams of LiBrO$$_2 is $$dissolved in $$86.80 mL of $$water, what is the molarity of the solution?

Accepted Answer

$$0.078 M$$

Question 20

In the reaction of $$25 mL of$$ $$0.20 M Pb(NO$_3$$)$$_2$$ with excess KI, what mass of precipitate is formed during the reaction?

Accepted Answer

$$0.84$$ \ \mathrm{grams}$

General Chemistry Exam Review: Atomic Structure, Quantum Mechanics, Chemical Reactions, and Solution Chemistry

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드