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
pochemuha
3 years ago
15

If a substance reacts with oxygen, the chemical reaction is most likely a combustion reaction. decomposition reaction. single re

placement reaction. double replacement reaction.
Chemistry
1 answer:
avanturin [10]3 years ago
7 0

Answer:

Option A is correct = combustion

Explanation:

When substance react with oxygen combustion is occur. The substance which burned is called fuel and in this process large amount of heat is released to the surrounding. It is exothermic process.

For example:

4Li + O₂    →      2Li₂O

2Mg + O₂    →    2MgO

 S +  O₂      →      SO₂  

The product which is formed as a result of combustion reaction are called oxides.  

In given examples we can see that lithium, magnesium and sulfur react with oxygen and product formed is oxides of respective elements such as lithium oxide ( Li₂O), magnesium oxide (MgO) and sulfur oxide ( SO₂ ).

Other options are incorrect because:

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

Decomposition reaction:

It is the reaction in which one reactant is break down into two or more product.

AB → A + B

You might be interested in
Question 116 g of sunflower oil is
Luba_88 [7]
<h2>Answer:  125.41 mL</h2>

Explanation:

Volume = mass ÷ density

             =  116 g  ÷  0.925 g/mL

             =  125.41 mL

<h3>A 116 g of sunflower oil of 0.925 g/mL has a volume of 125.41 mL.</h3>
7 0
3 years ago
Hemoglobin is the protein that transports oxygen in mammals. Different species of mammals have slightly different forms of hemog
Anna35 [415]

Answer;

= 64561.95 g/mole

Explanation;

mass of Fe in 100g = .346g

= .346 / 55.8452 moles

= 0.0061957 moles  

These represent 4 moles of Fe in the molecule so moles of hemaglobin

=  0.0061957/4  

= 0.0015489 moles  

these are in 100 g so mass of 1 mole = 100 / 0.0015489

= 64561.95 g / mole

molar mass of hemoglobin = 64561.95 g/mole

6 0
3 years ago
A mixture of two or more kinds of molecules, evenly dispersed would be a(n)
Dvinal [7]
Azeotropic mixture. I think
5 0
3 years ago
What is the [OH-] of a substance that has a pH of 11?
Deffense [45]

Answer:

0.001 M OH-

Explanation:

[OH-] = 10^-pOH, so

pOH + pH = 14 and 14 - pH = pOH

14 - 11 = 3

[OH⁻] = 10⁻³ ; [OH-] = 0.001 M OH-

6 0
2 years ago
Calculate the frequency
Ber [7]
Given: wavelength of Nitrogen laser (∧) = 337.1 nm = 337.1 X 10^-9 m

We know that, Energy of photon (E) = hc/∧ = hv
where, v = frequency of photon and c = speed of light = 3 X 10^8 m/s

Thus, v = c/∧ = (3 X 10^8)/ (337.1 X 10^-9) = 8.899 X 10^14 s-1.

Answer: F<span>requency of nitrogen laser = </span>8.899 X 10^14 s-1.
3 0
3 years ago
Read 2 more answers
Other questions:
  • 7. How many electrons can a single orbital hold?
    15·2 answers
  • What do weather maps display?
    7·2 answers
  • Draw the skeletal (line-angle) structure for 2,2-dimethyl-4-propyloctane.
    6·1 answer
  • What does X represent for this transmutation?
    9·1 answer
  • Wich statement describes how basic coffee cup calorimeter works
    15·2 answers
  • How different isotopes of Helium are similar and different.
    10·1 answer
  • What plants need in order for photosynthesis to occur
    11·1 answer
  • PLEASE HELP!!! I will mark Brainliest!!! How could you know if two substances were the same based upon 2 chemical reactions?
    10·2 answers
  • If you evaporated 125 mL of a 3.5 M solution of iron(II) nitrite, how many moles of iron(II) nitrite would you recover?
    14·1 answer
  • Question 1-19
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!