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
AfilCa [17]
3 years ago
7

Which is an example of a chemical reaction?

Chemistry
1 answer:
romanna [79]3 years ago
5 0
The answer choices: 
_____________________
[B]: rusting iron ;  AND:

[D]: rubbing a marker on paper;
________________________________
are BOTH examples of a chemical reaction.
___________________________
Note: Rusting iron is, more specifically, a "redox" (or, "oxidation/reduction") reaction.
____________________________

You might be interested in
If a container were to have 24 molecules of C5H12 and 24 molecules of O2 initially, how many total molecules (reactants plus pro
frutty [35]

Answer:

81 molecules

Explanation:

The reaction between C5H12 and O2 is a combustion reaction and is represented by the following equation;

C5H12 + 8O2 --> 5CO2 + 6H2O

The ratio of C5H12 to O2 from the above equation is 1 : 8.

Aplying the conditins of the question; 24 molecules each of C5H12 and O2 we have;

3C5H12 + 24O2 --> 15CO2 + 18H2O

This means we have 24 - 3 = 21 molecules of C5H12 that are unreacted.

Total molecules is given as;

3(C5H12) + 24(O2) + 15(CO2) + 18(H2O) + 21(Unreacted C5H12) = 81 molecules

5 0
3 years ago
What particle has a positive electrical charge and is found in the nucleus?
Virty [35]
Electron is the answer
4 0
3 years ago
Read 2 more answers
Cual es la masa atomica del hidrogeno
Fittoniya [83]

El hidrógeno es el elemento químico de número atómico 1, representado por el símbolo H. Con una masa atómica de 1.00784 u  ​ es el más ligero de la tabla periódica de los elementos. Por lo general, se presenta en su forma molecular, formando el gas diatómico H₂ en condiciones normales.

4 0
3 years ago
What is the major defining property of gasses?.
jonny [76]

Answer:

Gases have no definite shape or volume. They are fluid, allowing particles/molecules to move freely.

The behavior of a gas is that the volume changes directly with temperature. With a constant volume, the pressure will be directly proportional to the amount of gas.

Explanation:

These are some of the properties I can think of

5 0
2 years ago
Naoki's bicycle has a mass of 11 kg. If Naoki sits on her bicycle and starts pedaling with a force of 197.2 N, causing an accele
Cloud [144]

yes 89.75 sorry I'm not the best at math you should look on the internet

7 0
3 years ago
Other questions:
  • Salts and acids are examples of inorganic compounds called _____, which dissociate in water to release ions.
    11·2 answers
  • Some amount of water is evaporated from a 2.0 L, 0.2 M NaI solution, to from a 1.0 L solution. The molar mass of NaI is 150 g/mo
    8·1 answer
  • Where am I missing an electron?
    6·1 answer
  • A supposedly silver crown is tested to determine its density. It displaces 10.7 ml of water and has a mass of 112 g. Part a coul
    8·2 answers
  • Which forms of energy can be released during a chemical reaction?
    7·1 answer
  • 1) h2+o2 -&gt; h2o<br><br> does equation 1 follow the law of conservation of mass? how can you tell?
    10·1 answer
  • Answer the following questions related to H2O.
    5·1 answer
  • If I have 2.5 moles of a gas at a pressure of 7.4 atm and volume of 8.2 liters. What is the temperature
    12·1 answer
  • Think about the experiment at the start of this lesson. The steel wool reaction is as follows: 4Fe(s)+3O2(g)→2Fe2O3(s).
    5·2 answers
  • What is the approximate partial pressure of oxygen at 1500 m?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!