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
OLEGan [10]
3 years ago
10

Explain with the help of examples difference between elements and compounds​

Chemistry
1 answer:
djyliett [7]3 years ago
5 0

Answer:

Elements are pure substances which are composed of only one type of atom. Compound are substances which are formed by two or more different types of elements that are united chemically in fixed proportions. ... Some of the examples of elements are Iron, Copper, Gold, etc. A few examples of compounds are NaOH, NaCl, etc.

You might be interested in
A reaction produces 0.801 moles of H2O. How many molecules of H20 are produced?
timama [110]

Answer:

1 mole of molecules = 6.022 × 10²³ molecules

1 = 6.022 × 10²³ molecules / mole

Multiplying a number with [6.022 × 10²³ molecules / mole] is like multiplying the number with 1 so  0.877 mole × 6.022 × 10²³ molecules / mole = 5.28 × 10²³ molecules

5.28 × 10²³ molecules of water is produced.

Explanation:

6 0
3 years ago
A gas mixture being used to simulate the atmosphere of another planet at 23°c consists of 337 mg of methane, 148 mg of argon, an
Karolina [17]

The total pressure of the mixture is 65.5 kPa.

According to Dalton's Law of Partial Pressure,

The partial pressure of gas = Mole fraction of gas × Total pressure

Total Pressure = Sum of all the gases partial pressures

The number of moles of methane is,

Moles \:  of \: methane  \: (16 g/mol) =  337 \: mg  \times  \frac{1 g}{1000 mg} \times  \frac{ 1 mol}{16 g }

= 0.021 mols

The moles of methane are 0.021 mols.

The number of moles of the argon,

Moles \:  of \: argon (40 g/mol) = 148 \:  mg  \times  \frac{  1 g}{1000 mg } \times  \frac{  1 mol}{40 g}

= 0.003 mols

The number of moles of argon is 0.003 mols.

The number of moles of nitrogen is,

Moles  \: of \: nitrogen (28 g/mol) = 296 \:  mg  \times  \frac{ 1 g}{1000 mg}  \times  \frac{  1 mol/}{28 g}

= 0.010 mols

The number of moles of nitrogen is 0.010 mols.

The total number of moles is,

= 0.021 + 0.003 + 0.010

= 0.034 mols

Mole \:  fraction =  \frac{ Moles \:  of \:  solute }{Total \:  number  \: of  \:  moles  \: of  \: soulte \:  and \:  solvent}

= \frac{  0.010 }{ 0.034}

= 0.29

0.29 \: P _{total} = 19 \:  kPa

P _{total} =  \frac{ 19  \: kPa }{0.29}

= 65.5 kPa

Therefore, the total pressure of the mixture is 65.5 kPa.

To know more about Dalton's law, refer to the below link:

brainly.com/question/14119417

#SPJ4

6 0
1 year ago
The wavelenght of a wave is 0.5 meters,and its period is 2 seconds .what is the speed of this wave?
Aloiza [94]

Speed = Wavelength x Frequency

and frequency = 1/Period

Speed = Wavelength/Period

Speed = .5 * 2

Speed = 1 m/s

4 0
3 years ago
What is the Epicenter (it's about earthquakes)
Archy [21]

Answer

The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter. Sometimes an earthquake has foreshocks. These are smaller earthquakes that happen in the same place as the larger earthquake that follows.

Explanation:

5 0
3 years ago
The Questions are in the Pictures Attached
Whitepunk [10]

Answer:

1 is 5<3=me & you

Explanation:

7 0
3 years ago
Other questions:
  • Is a life vest more or less dense after being inflated
    8·2 answers
  • What type of bond results from the electrostatic attraction between positive and negative atoms?
    11·1 answer
  • Scientists dye cells using fluorescent molecules that bind to the cell membrane so that the cells can be seen under a microscope
    9·2 answers
  • Why do you fill a basketball, a football, a soccer ball, or a volleyball with a gas (air) instead of a liquid? Choose the two st
    13·2 answers
  • Which expression is a measurement of denisty
    8·1 answer
  • Does hydrogen builds all the acids??​
    14·1 answer
  • Write a nuclear equation for the fusion of two h−2 atoms to form he3 . how many neutrons are produced in the reaction
    7·1 answer
  • An alkaline solution has more hydrogen ions then hydroxide ions.<br><br> a. True<br><br> b. False
    7·1 answer
  • Which of the following is not an alteration of a document?
    6·1 answer
  • Charlie the Chemist heats a 62.51 g piece of copper from 22.9°C to 345.0°C. Calculate the amount
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!