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
nevsk [136]
3 years ago
15

Of the reactions listed below, which one is NOT a combination reaction? A) C + O2 => CO2 B) 2Mg + O2 => 2MgO C) 2N2 + 3H =

> 2NH3 D) CaO + H2O => Ca(OH)2 E) 2CH4 + 4O2 => 2CO2 + 4H2O
Chemistry
1 answer:
Alex_Xolod [135]3 years ago
5 0

Answer:

E

Explanation:

A combination reaction is one in which two elements or two compounds react to give a new single compound

Hence, what we are expecting on the reactant side is only a single product and not a mixture of products

For the first reaction, we had two elements giving a single product

For the second reaction, we had same

For the third, we had same

For the fourth, we had two compounds reacting to give a singe new product

While in the last, we had two different products which means it does not follow the definition of a combination reaction and that makes it our answer

You might be interested in
O que são processos físicos de separação das misturas? Dê 3 exemplos
chubhunter [2.5K]

Answer:

Explanation:

The physical methods of separating mixtures are used in sorting a mixture of substances.

It requires no chemical changes occurring between their components and parts in any significant way.

Examples are:

  1. Decantation
  2. Filtration
  3. Sublimation
  4. Magnetism
  5. Centrifugation

The methods simply relies on the physical properties of matter.

8 0
3 years ago
An atom of aluminum has 13 protons and 14 neutrons. what is the atomic mass
PtichkaEL [24]
A=P +N
A=13+14
A=27 this the answer
5 0
3 years ago
Genes are located in which part of a cell?
ddd [48]

Answer:A

Explanation:

7 0
3 years ago
Adjustment to environmental conditions is known as
alukav5142 [94]

Answer:

A.

Explanation:

Adjust = Adapt if that makes sense.

8 0
3 years ago
Read 2 more answers
Not able to be separated by physical means but is chemical what is it
Ray Of Light [21]
My science text book said that it was either diamond or gold.  Gold may not be right, but I am pretty sure diamond is.

Sorry if I got this wrong.
8 0
3 years ago
Other questions:
  • the gas left in an used aerosol can is at a pressure of 103 kPa at 25 degrees celsius if this can be thrown into fire what is th
    6·2 answers
  • How many atp molecules are produced during the citric acid cycle?
    15·2 answers
  • At stp potassium is classified as?
    5·1 answer
  • Calcium carbonate, when heated, forms calcium oxide and carbon dioxide. 100grams of calcium carbonate will produce 56grams of ca
    12·1 answer
  • Which formula is a molecular compound
    6·1 answer
  • A substance has a molecular formula of C8H10N4O2
    10·1 answer
  • What happen when the nitrate of an alkali metal is heatad?<br>​
    9·2 answers
  • The candle is lit and dilute ethanoic acid is poured down the inside of the beaker. As the acid reacts with the baking soda, bub
    13·1 answer
  • Nitrogen is an element. What is the smallest particle of nitrogen that has all the properties of nitrogen?
    8·1 answer
  • 15
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!