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
rewona [7]
2 years ago
14

Explain what a chemical reaction is and moles

Chemistry
1 answer:
Delvig [45]2 years ago
3 0

Answer:

A process during which chemical bonds between atoms are broken and new ones are formed, producing one or more substances.

Moles are the amount of substance that contains as many particles.

Explanation:

A chemical reaction is when a chemical change occurs for example when a nail comes into contact with air and is then exposed to air it begins to rust. It forms a red-brown substance which changes the chemical composition of the original compound.

Examples of chemical reactions:

Combustion

Oxidation (rusting)

Cooking an egg

Photosynthesis

Digestion

Fireworks

Paper Burnin

The mole is the amount of substance that contains as many particles (molecules, ions or atoms) as there are in 12g of carbon.

1 mol is the amount of substance that contains the same number of particles as there are atoms in 12.0 g of carbon-12 and that number is referred to as Avogardo's constant (6.022 x 10^{23}).

You might be interested in
Which probably best indicates that a compound contains an ionic bond
alex41 [277]
I’m thinking

It conducts electricity when Molten.
5 0
3 years ago
Compound A is an organic compound which contains Carbon, Hydrogen and Oxygen. When 0.240g of the vapour of A is slowly passed ov
vesna_86 [32]

(a)   In this section, give your answers to three decimal places.

(i)

Calculate the mass of carbon present in 0.352 g of CO

2

.

Use this value to calculate the amount, in moles, of carbon atoms present in 0.240 g

of

A

.

(ii)

Calculate the mass of hydrogen present in 0.144 g of H

2

O.

Use this value to calculate the amount, in moles, of hydrogen atoms present in 0.240 g

of

A

.

(iii)

Use your answers to calculate the mass of oxygen present in 0.240 g of

A

Use this value to calculate the amount, in moles, of oxygen atoms present in 0.240 g

of

A


(b)

Use your answers to

(a)

to calculate the empirical formula of

A


thank you

hope it helpsss

4 0
3 years ago
A metal melts at 450 degrees celsius. Is this property of the metal classified as chemical or physical?
Romashka-Z-Leto [24]
It's a physical property because it doesn't change the element of the metal.
does this make sense?
8 0
3 years ago
How does the body react when the outside temperature gets too hot
mr_godi [17]
When temperatures rise, the body reacts by increasing blood flow to the skin's surface, taking the heat from within the body to the surface. This means sweat. ... If, as in the UK, our skin temperature is warmer than the external temperature we are also able to lose heat to the environment, termed 'dry heat loss'.
6 0
2 years ago
Which elements form are ionic compounds check all the boxes that apply
morpeh [17]

Answer/Explanation:

Aluminum and oxygen

Fluorine and oxygen

Ionic compounds are formed when any type of metal is combined with a non-metal such as carbon, nitrogen, oxygen, sulfur, phosphorus, and selenium.

(any)metal + nonmetal = ionic compound

7 0
3 years ago
Other questions:
  • In a cooking context, which of the following materials is the best heat conductor?
    10·1 answer
  • A sample of gas has a volume of 215 cm3 at 23.5 degrees Celsius and 84.6kPa what volume will the gas occupy at stp
    13·2 answers
  • If liquids are liquids because they take the shape of their container, why isn't salt considered a liquid?
    15·2 answers
  • The discipline of chemistry has made agricultural chemicals, such as fertilizer and pesticides, available to society.
    11·2 answers
  • How many seconds are in 5 hours
    6·2 answers
  • How would you find how many unpaired electrons are in a compound? Ex. unpaired electrons in aluminum in aluminum II oxide.
    12·1 answer
  • PLZ HELP!!!!!!how many atoms are in 6.8 miles of sulfur
    10·1 answer
  • Which element, Phosphorus or Calcium, is more reactive? Why?
    6·1 answer
  • What does electronegativity mean?
    5·1 answer
  • What is oxidized and what is reduced <br> C2H4 + 2O2 → 2CO + 2H2O<br> C2H4 + 3O2 → 2CO2 + 2H2O
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!