1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nostrana [21]
2 years ago
5

Lead (II) Acetate + Potassium Chromate

Chemistry
1 answer:
castortr0y [4]2 years ago
8 0

Answer:

SOMEONE HURRY AND ANSWER THIS

Explanation:

You might be interested in
Using the Bohr model, determine the energy, in joules, necessary to ionize a ground-state hydrogen atom. Show your calculations.
lord [1]

Answer:

The energy required to ionize the ground-state hydrogen atom is 2.18 x 10^-18 J or 13.6 eV.

Explanation:

To find the energy required to ionize ground-state hydrogen atom first we calculate the wavelength of photon required for this operation.

It is given by Bohr's Theory as:

1/λ = Rh (1/n1² - 1/n2²)

where,

λ = wavelength of photon

n1 = initial state = 1 (ground-state of hydrogen)

n2 = final state = ∞ (since, electron goes far away from atom after ionization)

Rh = Rhydberg's Constant = 1.097 x 10^7 /m

Therefore,

1/λ = (1.097 x 10^7 /m)(1/1² - 1/∞²)

λ = 9.115 x 10^-8 m = 91.15 nm

Now, for energy (E) we know that:

E = hc/λ

where,

h = Plank's Constant = 6.625 x 10^-34 J.s

c = speed of light = 3 x 10^8 m/s

Therefore,

E = (6.625 x 10^-34 J.s)(3 x 10^8 m/s)/(9.115 x 10^-8 m)

<u>E = 2.18 x 10^-18 J</u>

E = (2.18 x 10^-18 J)(1 eV/1.6 x 10^-19 J)

<u>E = 13.6 eV</u>

5 0
3 years ago
Which example indicates that a chemical change has occurred? *
andrezito [222]

Answer:

A. When two aqueous solutions are mixed, a precipitate is formed.

Explanation:

The precipitate (a solid substance that falls from the liquid) is the result of a chemical reaction taking place between the liquids.

The other three answer choices are indicative of physical changes (temperature change, phase change, color change).

7 0
3 years ago
How many grams of butane can be burned by 1.42 moles of oxygen?
Mrrafil [7]

Answer:

So the molar mass of C4,H10 is

58.12g mole -1

6 0
3 years ago
What is the correct name for the chemical formula N408?
Alexandra [31]

Answer:

molar mass (molar weight)

Explanation:

7 0
3 years ago
Read 2 more answers
Why are the Flemish called Flemish
Dmitriy789 [7]

Explanation:

The flemish are an ethnic group which belong to the northern part of Belgium called Flanders. They also speak a language called flemish. The major population of Belgium are the flemish. The language they speak is a  Low Franconian dialect cluster of the Dutch language.

There was a country called the flanders located in the lowlands of Europe. Any person from this country was considered as flemish previously.

4 0
3 years ago
Other questions:
  • Recycled r134a refrigerant cannot exceed what levels of contaminants
    15·1 answer
  • Is glue a suspension colloid or solution?
    10·2 answers
  • The diameter of a carbon atom is approximately 144 pm. Assuming a nanocontainer has a simple cubic structure and have an edge le
    7·1 answer
  • Find the formula mass (molecular mass) of propanol: C3H6O ​
    13·1 answer
  • Calculate the change in temperature that occurs when 3.50 x 10^-2kg of copper heated by 635 J of energy. Ccu = 0.385 j/gxC
    10·2 answers
  • How many moles of gold are Cleveland to 1.204×1024 atoms
    9·1 answer
  • Determine the energy released when an electrons transitions from n =3 to n = 2
    8·1 answer
  • What is the formula for hydrophosphoric acid?
    8·1 answer
  • Name any two metals that are found in liquid state at NTP.​
    12·1 answer
  • In a high-mass star, hydrogen fusion occurs via the choose one: a. spin-spin interaction. b. proton-proton chain. c. cno cycle.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!