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
Leni [432]
2 years ago
7

Please help I will give brainliest!

Chemistry
1 answer:
aleksklad [387]2 years ago
6 0
I believe it’s the 3rd option
You might be interested in
2. Use the graph below to answer the following questions.
BlackZzzverrR [31]

Answer:

The graph represents an endothermic reaction.

The products have more energy than the reactants.

80kJ

160kJ

80kJ

160kJ

6 0
2 years ago
Who is ghana's presnt​
enyata [817]

aquafaba is president of Ghana

3 0
3 years ago
What is the purpose of doing a cell culture lab?
Anuta_ua [19.1K]

Answer:

Cell culture is one of the most important techniques in cellular and molecular biology since it provides a platform to investigate the biology, biochemistry, physiology (e.g., aging) and metabolism of wild-type cells and diseased cells.

8 0
3 years ago
What are two things that you observed when you heated the mixture of tin and nitric acid over the Bunsen burner in the virtual l
Rus_ich [418]
1. The reaction for this would be:

Sn + 4 HNO₃ →  SnO₂ + 4 NO₂ + 2 H₂O

The first observation would be bubbling of the solution and brown acrid smoke is produced due to the presence of NO₂ gas. Another observation would be the presence of a white solid which is SnO₂.

2. Heating was required to get rid of the H₂O. When all moisture is gone, you weigh the sample. Afterwhich, you further heat it to get ride of the oxygen. By doing this, you would know the individual mass of each element. Then, you can solve for the empirical formula of the oxide of tin.
3 0
3 years ago
When an electron in a quantum system drops from a higher energy level to a lower one, the system __
icang [17]

When an electron in a quantum system drops from a higher energy level to a lower one, the system<u> emit a photon.</u>

<u />

The energy of the electron drops when it transitions levels, as well as the atom releases photons. The emission of the photon occurs as the electron transitions from an energy state to a lower state. The photon energy represents precisely the energy that would be lost when an electron moves to a level with less energy.

When such an excited electron transitions from one energy level to another, this could emit a photon. The energy drop would be equivalent to the power of the photon that is released. In electron volts, the energy of an electron, as well as its associated photon (emitted or absorbed) has been stated.

Therefore, when an electron in a quantum system drops from a higher energy level to a lower one, the system<u> emit a photon.</u>

<u />

To know more about electron

brainly.com/question/1255220

#SPJ4

<u />

4 0
2 years ago
Other questions:
  • Where in a convergent boundary does rock recycling occur
    11·1 answer
  • Calculate the density, in g / mL , of a liquid that has a mass of 0.125 g and a volume of 0.000285 L
    14·1 answer
  • 2. Which number is not a coefficient in the equation,
    5·2 answers
  • Between Na and Na+ which has larger size​
    13·1 answer
  • Determine the volume of a piece of gold with a mass of 318.97g
    14·1 answer
  • How will growing trees affect the levels of carbon dioxide in the atmosphere
    10·2 answers
  • Pls help this is due in 10 minutes can someone tell me question 4
    11·1 answer
  • What effect does the anion of an ionic compound have on the appearance of the solution?
    10·1 answer
  • Potential Energy vs Height
    10·1 answer
  • What is the empirical formula for the molecular formula given? Molecular formula: C5H12O
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!