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
8090 [49]
3 years ago
6

Look carefully at the list of objects and order

Chemistry
1 answer:
tigry1 [53]3 years ago
4 0

Answer:

Atom, cell, dust particle, ant, ping pong ball

Explanation:

Firstly, atoms make up all matter, including each of the items on that list. The only things smaller than atoms are the parts of the atom itself, protons, neutrons and electrons. Because none of those are on that list, atoms have to be the smallest. Next smallest is the cell. Cells are made up of atoms, but they also in part make up dust. You can see a dust particle with the naked eye, but in order to see a cell you must use a microscope. Thus, cells are smaller than dust particles. Next is an ant. Obviously, an ant is bigger than a speck of dust, and is made up of cells and atoms. Lastly all you have is the ping pong ball, which is much larger than the rest of the items. Hope this helps!

You might be interested in
What does a biochemical solar panel have
Viktor [21]
I agree with the person on top have a beautiful day:)
4 0
2 years ago
What was Johann Dobereiner’s contribution to the development of the periodic table?
umka21 [38]
<span>he introduced his law of triads. each triad was a group of three elements</span>
3 0
3 years ago
Read 2 more answers
Convert -32 F into K
Afina-wow [57]

Answer:

-32 Fahrenheit converts to 237.594 Kelvin

4 0
3 years ago
What is the relationship between the internal energy of a substance and its particle movement?
ss7ja [257]

Answer: The closeness, arrangement and motion of the particles in a substance change when it changes state. Materials are a store of internal energy , due to the motion of particles and the chemical bonds between them. When a substance is heated, its internal energy increases: the movement of its particles increases.

Explanation:

6 0
3 years ago
What is the molarity of 225 grams of Cu(NO2)2 in a total volume of 2.59 L?
Kay [80]

Answer:

The molarity is 0.56\frac{moles}{L}

Explanation:

In a mixture, the chemical present in the greatest amount is called a solvent, while the other components are called solutes. Then, the molarity or molar concentration is the number of moles of solute per liter of solution.

In other words, molarity is the number of moles of solute that are dissolved in a given volume.

The Molarity of a solution is determined by:

Molarity (M)=\frac{number of moles of solute}{Volume}

Molarity is expressed in units (\frac{moles}{liter}).

Then you must know the number of moles of Cu(NO₂)₂. For that it is necessary to know the molar mass. Being:

  • Cu: 63.54 g/mol
  • N: 14 g/mol
  • O: 16 g/mol

the molar mass of Cu(NO₂)₂ is:

Cu(NO₂)₂= 63.54 g/mol + 2*(14 g/mol + 2* 16 g/mol)= 155.54 g/mol

Now the following rule of three applies: if 155.54 g are in 1 mole of the compound, 225 g in how many moles are they?

moles=\frac{225 g*1 mole}{155.54 g}

moles= 1.45

So you know:

  • number of moles of solute= 1.45 moles
  • volume=2.59 L

Replacing in the definition of molarity:

Molarity=\frac{1.45 moles}{2.59 L}

Molarity= 0.56\frac{moles}{L}

<u><em>The molarity is 0.56</em></u>\frac{moles}{L}<u><em></em></u>

5 0
3 years ago
Other questions:
  • 33p is a radioactive isotope of phosphorus. can 33p be used to make a radioactive nucleotide?
    7·2 answers
  • At room temperature, 20ÁC, water (H2O) is a liquid and oxygen (O2) is a gas. Based on kinetic molecular theory, which answer bes
    6·1 answer
  • or the solution containing Zn2+(aq), n is 2, so the MM/n ratio will be the molar mass of Zn divided by 2: MM/n = (65.39 g/mol) /
    10·1 answer
  • What is the maximum number of electrons in the following energy level?
    13·1 answer
  • What is the correct name for the following compound: P2Br5
    11·1 answer
  • What do the coefficients in the following balanced chemical equation mean?<br><br> 2H2 + O2 → 2H2O
    7·1 answer
  • How many grams are in .997 moles of N205?
    9·1 answer
  • 1.0 mole of KCl(aq) is added to which solution to produce a precipitate?
    12·1 answer
  • A ring made of pure gold contains 5.29 x 1022 atoms. How many moles are in the ring?
    6·1 answer
  • Give me lil reasoning so I know your not lying for points
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!