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
DedPeter [7]
3 years ago
11

A chemical element is a pure substance that consists entirely of what?

Chemistry
1 answer:
Novosadov [1.4K]3 years ago
7 0
Ans: consists of atoms
You might be interested in
What is the mass of 4.5 x 10^22 molecules of hydrogen peroxide (H2O2)? Show your work in the space below.
valentinak56 [21]

Given :

Number of molecules of hydrogen peroxide, N = 4.5 × 10²².

To Find :

The mass of given molecules of hydrogen peroxide.

Solution :

We know, 1 mole of every compound contains Nₐ = 6.022 × 10²³ molecules.

So, number of moles of hydrogen peroxide is :

n = \dfrac{N}{N_a}\\\\n = \dfrac{4.5\times 10^{22}}{6.022\times 10^{23}}\\\\n = 0.0747 \ moles

Now, mass of hydrogen peroxide is given as :

m = n × M.M

m = 0.0747 × 34 grams

m = 2.54 grams

Hence, this is the required solution.

6 0
3 years ago
How are cells the basic units to all organisms??
Nonamiya [84]

Answer:

Cells as Building Blocks

A cell is the smallest unit of a living thing. A living thing, whether made of one cell (like bacteria) or many cells (like a human), is called an organism. Thus, cells are the basic building blocks of all organisms. ... Several systems that function together form an organism (like a human being).

5 0
2 years ago
In a lab experiment, john uses a mesh to separate soil particles from water. Which technique of separation is he using
blondinia [14]
The Filtration techique
5 0
3 years ago
Photo attached: Does anyone know part B??? Please help if you can :(
jarptica [38.1K]

Answer: no

Explanation: :)

7 0
2 years ago
In the alpha decay of Francium-221, what daughter element is produced?
aleksley [76]
<span>Astatine-217 is the daughter element produced by the alpha decay of Francium-221.</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • Help me <br> Which rock is NOT sedimentary?<br> A.shale<br> B.schist<br> C.limestone<br> D.sandstone
    10·2 answers
  • What color does red litmus paper turn in an acid base and neutral solution?
    10·2 answers
  • How does a plants food translate to plant growth (hint: energy is needed for growth)?
    9·1 answer
  • Without doing any calculations, determine which sample contains the most atoms.
    8·1 answer
  • Identify which sets of quantum numbers are valid for an electron. Note that each set is ordered (n,l,ml,ms).
    7·1 answer
  • Jelaskan perbedaan asam lemah dan asam kuat menurut teori arrhenius
    15·1 answer
  • Identify four properties of a substance that will never change
    7·2 answers
  • Used oil needs to be kept in what kind of containers
    9·1 answer
  • The noble gases can be found in group/period ____
    11·2 answers
  • How would you distinguish benzoic acid and benzyl alcohol by their infrared spectra?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!