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
nordsb [41]
3 years ago
13

Why do different chemicals emit different colors of light?​

Chemistry
1 answer:
Mama L [17]3 years ago
5 0

Answer:

Because no two elements have the same set of energy levels, different elements emit different colors of light. Energy is released when electrons move from higher energy levels to lower ones (visible light).

Explanation:

You might be interested in
If 1 mol of XO₂ contains the same number of atoms as 60 g of XOs, what is the molar mass of XO₂?
Lena [83]

Answer:

44 grams/mole

Explanation:

<u>If 1 mol of XO₂ contains the same number of atoms as 60 g of XO3, what is the molar mass of XO₂?</u>

<u></u>

60 grams of XO3 is one mole XO3, since it has the same number of atoms as 1 mole of XO2.

Let c be the molar mass of X.  The molar mass of XO3 is comprised of:

X:  c

3O:  3 x 16 = 48

Total molar mass of XO3 is = <u>48 + c</u>

We know that the molar mass of XO3 = 60 g/mole, so:

48 + c  = 60 g/mole

c = 12 g/mole

The molar mass of XO2 would be:

1 X = 12

2 O = 32

Molar mass = 44 grams/mole, same as carbon dioxide.  Carbon's molar mass is 12 grams.

<u></u>

<u></u>

5 0
2 years ago
3. In the picture, a girl with a weight of 540 N is balancing on
svet-max [94.6K]

Answer:

340 N

Explanation:

<u>Force formula</u>

The force formula is defined by Newton's second law of motion: Force exerted by an object equals mass times acceleration of that object: F = m ⨉ a. To use this formula, you need to use SI units: Newtons for force, kilograms for mass, and meters per second squared for acceleration.

<u>Equilibrium</u>

It is a state of rest or balance due to the equal action of opposing forces. equal balance between any powers, influences, etc.; equality of effect. mental or emotional balance; equanimity: The pressures of the situation caused her to lose her equilibrium.<u> </u>

6 0
2 years ago
I NEED HELPPPPPP ASAPPPPPPPPPPPP
Mama L [17]
I can’t read ? This what does it say
7 0
2 years ago
Please help I need an answer , URGENTLY !
EastWind [94]

Answer:

Aluminium metal reacts vigorously with all the halogens to form aluminium halides. So it reacts with chlorine, bromine, and iodine.

7 0
2 years ago
I get it! Now I know that atomic theory changed with time because...?
Zinaida [17]

Answer:

okay so i hope this helps

Explanation:

In chemistry and physics, the atomic theory explains how our understanding of the atom has changed over time. Atoms were once thought to be the smallest pieces of matter. However, it is now known that atoms are made up of protons, neutrons, and electrons. These subatomic particles are made up of quarks.

4 0
3 years ago
Other questions:
  • Which is a carbohydrate?
    10·2 answers
  • What does viscosity describe?
    7·2 answers
  • TIMED TEST PLEASE HURRY!!! The development of a new experimental method is most likely to change a theory if it makes it possibl
    13·2 answers
  • A student was asked to separate a mixture of chemicals. The weight of each component within the mixture is as follows: potassium
    12·1 answer
  • Hof metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the
    7·1 answer
  • A student claims that if she wanted to make a solution quickly, she should use small pellets instead of powder along with heatin
    8·1 answer
  • Calculate the number of moles in 75 g of Glucose
    10·1 answer
  • Scientists who are investigating what has happened over the years to the people who were exposed to radiation during the 1986 Ch
    13·1 answer
  • At 35°C and 2 atm of pressure, the volume of gas is 200 ml. If the temperature changes to
    15·1 answer
  • A balloon contains 8.4 L of helium gas at STP. How many moles of helium are in the balloon? 0.38 moles He ,190 moles He ,2.1 mol
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!