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
tankabanditka [31]
3 years ago
12

Which describes a chemical reaction? A. Raw eggs are fried in a pan B. Raw eggs are scrambled with a fork C. Raw eggs are placed

in a refrigerator D. Raw eggs are collected from a chicken coop
Chemistry
2 answers:
Otrada [13]3 years ago
8 0
Raw eggs are scrambled with a fork
Rus_ich [418]3 years ago
6 0

Answer A

Explanation:

it is A

You might be interested in
If a hydrogen atom has its electron in the n = 3 state, how much energy in ev is needed to ionize it?
tensa zangetsu [6.8K]

The energy of the hydrogen atom will be -0.85 ev.

Ionization, also known as ionization, would be the phenomenon by which an atom or molecule gains or loses electrons to acquire a negative and positive charge, frequently in conjunction with those other chemical changes. Ions are the name for the electrically charged molecular or atom that results.

These chemicals are known as ionic compounds, with table salt serving as an example. Ionization would be the process of removing electrons from such an element as well as a molecule as well as the dissociation of an ionic material, such as salt, itself into the individual ions in a solution like water.

The energy of hydrogen atom will be calculated by using the formula:

E_{n} = -13.6 ev / n^{2}

where, E_{n} = energy of nth level, n is the state.

It is given that, n = 3 .

Now put the value of n in above equation.

E_{4} = -13.6 ev / 4^{2}\\E_{4} = -13.6 ev  / 16\\E_{4} = -0.85 ev

Therefore, the energy of the hydrogen atom will be -0.85 ev.

To know more about energy

brainly.com/question/1932868

#SPJ4

4 0
1 year ago
What is the percent composition of hydrogen in NH4HCO3?
Readme [11.4K]
To find the Percent Composition of an atom, you use this formula:
Mass of element in the compound you're studying on ( in this case it's 5 since there is 5 Hydrogens) over the mass of the compound (which is here 79), Multiplied by 100 since you want a percent. 
So we get: 
\frac{5}{79} * 100
So you get about: 
0.063 * 100
6.3

So, the percent composition of Hydrogen in NH4HCO3 is 6.3%

Hope this Helps! :D


7 0
3 years ago
Read 2 more answers
How many moles of helium are 8.84×1024 atoms of He?
insens350 [35]

Answer:

14.68 moles of He

Explanation:

To do this, just remember Avogadro's Constant or Avogadro's number. This constant tells us how many units ( in this case atoms) there are in a mole of ANY type of substance.

Avogadro's constant is 6.022140857 × 10²³ units per mole.

Now that we know how many atoms there are in 1 mole, we can use this as our conversion factor.

8.84 x 10²⁴ atoms of He →  moles of He

8.84\times10^{24} atoms of He\times\dfrac{1moleofHe}{6.022140857\times10^{23}atomsofHe}=14.68molesofHe

So the answer would be:

14.68 moles of He

4 0
3 years ago
A proton is moving toward a second, stationary proton. What happens as the<br> protons get closer?
Vlad [161]

Answer:

they repel

Explanation:

because like charges repel

5 0
3 years ago
Read 2 more answers
State two procedures which should be used to properly handle a light microscope
babunello [35]

hold at base and arm

5 0
3 years ago
Other questions:
  • How will you investigate the relationship between the molecule's temperature and kinetic energy?
    10·1 answer
  • If you took an empty balloon, weight it on a scale then filled the balloon up with air and weighed it again would you expect the
    15·1 answer
  • how do scientists apply emission spectra to investigate the chemical composition of stars. 1 page long essay.
    9·2 answers
  • Lol i decided to make a science question for u guys to see if your good st science so here it is...:What is a decomposer,a produ
    6·2 answers
  • What would you expect to have the highest melting point?
    11·1 answer
  • What is relative point​
    11·2 answers
  • Among the elements of the main group, the first ionization energy increases
    7·2 answers
  • A salt contains only magnesium and one of the halide ions. A 0.0776-g sample of the salt was dissolved in water, and an excess o
    6·1 answer
  • Which statement is correct about the water cycle?
    14·1 answer
  • Water, H2O, is a molecule made of oxygen and hydrogen. The bonds that hold water molecules together are due to shared __________
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!