General Chemistry Additional

Question 1

What is the chemical formula for ammonium?

Answer 1

NH4+

Question 2

What is the chemical formula for ammonia?

Answer 2

NH3

Question 3

Fill in the blank: The formula for phosphate is _____.

Answer 3

PO4^3-

Question 4

What is the chemical formula for hydrogen phosphate?

Answer 4

HPO4^2-

Question 5

Multiple choice: Which of the following is the formula for dihydrogen phosphate? A) H2PO4- B) HPO4^2- C) PO4^3-

Answer 5

A) H2PO4-

Question 6

What is the chemical formula for carbonate?

Answer 6

CO3^2-

Question 7

Which ion has the chemical formula SO4^2-?

Answer 7

Sulfate

Question 8

What is the chemical formula for bicarbonate?

Answer 8

HCO3−

Question 9

What is the chemical formula for nitrate?

Answer 9

NO3−

Question 10

Fill in the blank: The chemical formula for nitrite is ______.

Answer 10

NO2−

Question 11

What is the name of the ion with the formula ClO4−?

Answer 11

Perchlorate

Question 12

Multiple choice: Which of the following is the correct formula for chlorate? A) ClO3− B) ClO2− C) ClO4− D) ClO−

Answer 12

A) ClO3−

Question 13

What is the chemical formula for chlorite?

Answer 13

ClO2^-

Question 14

What is the chemical formula for hypochlorite?

Answer 14

ClO3^-

Question 15

Fill in the blank: The chemical formula for permanganate is ______.

Answer 15

MnO4^-

Question 16

What is the name of the compound with the chemical formula CrO4^2-?

Answer 16

Chromate

Question 17

Which of the following is the correct chemical formula for cyanide? A) CN^- B) C2N^- C) CNO^-

Answer 17

A) CN^-

Question 18

What is the formula for the Rydberg equation to calculate the energy (i.e. the photon) required for an electron to move between energy levels? What is the Rydberg constant in this equation?

Answer 18

ΔE = R_H (1/n1² - 1/n2²)

R_H = 2.18 x 10^-18 J?
n1² = Initial State
n2² = Final State

Question 19

What is the formula for the Rydberg equation to calculate the wavelength of light required
for an electron to move between energy levels? What is the Rydberg constant in this equation?

Answer 19

The Rydberg equation is given by 1/λ = R_H (1/n1^2 - 1/n2^2)

R_H = 1.097 × 10^7 m^-1
n1² = Initial State
n2² = Final State
λ = Wavelength

Question 20

What elements does H form a hydrogen bond with?

Answer 20

O, N, F

Question 21

What is the speed of light in a vacuum?

Answer 21

Approximately 3.00 x 10^8 meters per second

Question 22

What is the numerical value of Planck’s Constant?

Answer 22

Planck’s Constant is approximately 6.626 x 10^-34 Js. It is denoted by h.

Question 23

How does Planck’s Constant relate to the energy of a photon?

Answer 23

The energy of a photon (E) is given by the formula E = hν, where ‘ν’ is the frequency of the photon.

The speed of light (c) is given by the equation λν = c. Based on this, E =hc /λ, which can also be tied to the Rydberg equation to calculate the energy of a photon.