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
vekshin1
2 years ago
15

GRADE 5 SCIENCE MYA-2020-2021

Chemistry
1 answer:
Elenna [48]2 years ago
5 0

Answer:

Test it with a blue light that is 45 cm away.

Explanation:

You might be interested in
If half of the moon is always illuminated why does its appearance from earth change?
irina [24]

Answer:

The different angles the moon has from sunlight to the earth

Explanation:

3 0
3 years ago
Read 2 more answers
Which of the following molecules is diamagnetic according to molecular orbital theory? A) N₂⁺ B) N₂⁻ C) CN D) CN⁻
Gnom [1K]

Answer:

D) CN⁻

Explanation:

    Hund's Rule of Maximum Multiplicity state that electrons go into degenerate orbitals of sub-levels (p,d, and f ) singly before pairing commences. Hund's rule is useful in determining the number of unpaired electrons in an atom. As such, it explains some magnetic properties of elements.

An element whose atoms or molecules contain unpaired electrons is paramagnetic. i.e., weakly attracted to substances in a magnetic field.

On the other hand, the element whose atoms or molecules are filled up with paired electrons is known as diamagnetic, i.e., not attracted by magnetic substances.

According to the molecular orbital theory, the diamagnetic molecule is CN⁻ because of the absence of unpaired electrons.

6 0
3 years ago
HELPPP PLS
photoshop1234 [79]
I think it could be C maybeee though
6 0
3 years ago
The decomposition of nitrogen dioxide is described by the following chemical equation: Suppose a two-step mechanism is proposed
Mandarinka [93]

Answer:

<u>first step </u>

NO2(g)  ------------------------------------> NO(g) + O(g)

<u>second step</u>

NO2(g) + O(g) -----------------------------> NO(g) + O2(g)

Explanation:

<u>first step </u>

NO2(g)  ------------------------------------> NO(g) + O(g)

<u>second step</u>

NO2(g) + O(g) -----------------------------> NO(g) + O2(g)

8 0
3 years ago
A chemist dissolved crystals of an unknown substance into water at room temperature. He found that 33 g of the substance can be
Inga [223]
The answer is: It's solubility
8 0
3 years ago
Read 2 more answers
Other questions:
  • How is radioactive elements used for medical diagnosis
    9·1 answer
  • Why is eutrophication harmful to fresh water ?
    9·2 answers
  • How many moles of ammonium sulfate can be from the reaction of 30.0 mol of NH3 with H2SO4 according to the following equation: 2
    10·1 answer
  • What kind of nuclear reaction is seen in 236 92 U - 144 36 Kr 3p1n A; nuclear fission B; Beta decay C; Alpha decay D; Nuclear fu
    13·1 answer
  • What is the mass of the solution when 1 pound of salt is dissolved in 20 pounds of water?
    8·1 answer
  • 7. Which two substances do geologists use in radiocarbon dating?
    11·1 answer
  • How long will it take the cyclist to travel 400 meter?
    14·1 answer
  • Use the crossover method to find the chemical formula of a calcium oxide
    9·1 answer
  • Please help!! i will give brainiest
    13·1 answer
  • As the sun sets, the temperature of the room decreases. Explain how this affects the particle motion of the gas particles in the
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!