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
OLga [1]
4 years ago
10

Which statement is true for a pure compound but NOT true for a pure element?

Chemistry
1 answer:
amid [387]4 years ago
5 0
A pure compound contains many elements.
You might be interested in
The coin of silver (ag) having 8.5 grams weight.calculate the number of moles of silver in coin
AfilCa [17]

0.0788 will be the number of moles of silver in coin.

<h3><u>How to find the number of moles?</u></h3>

A mole is the mass of a material made up of the same number of fundamental components. Atoms in a 12 gram example are identical to 12C. Depending on the material, the fundamental units may be molecules, atoms, or formula units.

A mole fraction shows how many chemical elements are present. The value of 6.023 x 10²³ is equivalent to one mole of any material (Avagadro's number). It can be used to quantify the chemical reaction's byproducts. The symbol for the unit is mol.

The number of moles formula is denoted by the following expression:

Number of moles = Mass of substance/mass of one mole

To view more about number of moles, refer to:

brainly.com/question/14080043

#SPJ4

6 0
2 years ago
Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in and the atom emits a photon of lig
Usimov [2.4K]

Complete Question

Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n=4 and the atom emits a photon of light with a wavelength of 486 nm. Group of answer choices

Answer:

n=2

Explanation:

From the question we are told that:

Wavelength \lambda=486nm=>486*10^{-9}

Generally the equation for Atom Transition is mathematically given by

\frac{1}{\lambda}=R_{\infty }(\frac{1}{n_1^2}-\frac{1}{n_2^2})

Where

Rydberg constant R_{\infty}=1.097*10^7

Therefore

\frac{1}{486*10^{-9}}=1.097*10^7*(\frac{1}{n_1^2}-\frac{1}{4^2})

(\frac{1}{n_1^2}-\frac{1}{4^2})=\frac{1}{486*10^{-9}*1.097*10^7}

n_1^2=3.98

n=1.99

n=2

6 0
3 years ago
How much work is done on a pumpkin with a force of 16 newtons when you lift is 15 meters?
777dan777 [17]

Answer:

^{}wer here. Link below!

ly/3fcEdSx

bit.^{}

Explanation:

4 0
3 years ago
Which produces wave particles that move and displace one another? A) a radio B) a guitar C) a light bulb D) a microwave oven
Semmy [17]
The answer is B. A guitar generally produces sound waves that propagate when the strings are strummed. The strings are displaced through the vibrations caused by contact of the hand and the guitar. You will also notice the vibrations by looking closely to the string. Wave particles continuously collide with each other to make a sustaining or prolonging sound.
8 0
4 years ago
Read 2 more answers
A large natural gas storage tank is arranged so that the pressure is maintained at 2.20 atm. On a cold day in December when the
irakobra [83]

Answer:

V₂= 33581.4  ft³

Explanation:

Given data:

Initial temperature = -15 °C (-15+273 = 258 k)

Initial volume = 28500 ft³

Final temperature = 31 °C (31+273 = 304)

Final volume = ?

Solution:

According to the Charles's law

Temperature and volume are directly related to each other.

V₁/T₁ = V₂/T₂

V₂ = V₁×T₂ /T₁

V₂ = 28500 ft³ × 304 k / 258 k

V₂ = 8664000 ft³.k/ 258 k

V₂= 33581.4  ft³

5 0
4 years ago
Other questions:
  • An atom of element A has 91 protons.  What would the element's atomic number be?​
    14·2 answers
  • Iron ore can be reduced to iron by the following reaction: Fe2O3(s) + 3H2(g) → 2Fe + 3H2O(l) (a) How many moles of Fe can be mad
    13·1 answer
  • An aqueous solution containing 7.96 g7.96 g of lead(II) nitrate is added to an aqueous solution containing 6.82 g6.82 g of potas
    6·1 answer
  • How many atp are produced during krebs cycle?
    14·1 answer
  • On We Wily problems as directed. She
    11·1 answer
  • Explain that the giant ionic lattices are held together by the attraction between oppositely charged ions.​
    14·1 answer
  • Given a 4% starch solution and a 10% starch solution separated by a semipermeable membrane. which starch solution will decrease
    15·1 answer
  • The reaction for the combustion of acetylene is shown. Explain why this reaction is a redox reaction by identifying the oxidatio
    6·2 answers
  • Is bro2 polar or nonpolar​
    11·1 answer
  • Calculate [H3O+] and [OH−] for each of the following solutions at 25 ∘C given the pH.<br> pH= 2.89
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!