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
AveGali [126]
3 years ago
5

Select all the correct answers.

Chemistry
2 answers:
swat323 years ago
8 0

Silver tarnishes and becomes black when exposed to oxygen:

              Diesel fuel burns when it is heated:

Mashutka [201]3 years ago
7 0

Answer:

              Silver tarnishes and becomes black when exposed to oxygen:

              Diesel fuel burns when it is heated:

Explanation:

                    Chemical Changes are those changes in which the chemistry at molecular level is changed as the starting material is converted in to a new and different final material. This change takes place with the breaking of old bonds and forming of new bonds respectively.

Silver tarnishes and becomes black when exposed to oxygen:

This is a chemical change as Silver a white and lustrous starting material is being converted into a tarnish black final material. However, Silver doesn't readily react with oxygen at normal conditions. It readily react with Sulfur containing compounds in air and produces black compound as Ag₂S.

Diesel fuel burns when it is heated:

Diesel is a mixture of hydrocarbons ranging approximately from C₁₀H₂₀ to C₁₅H₂₈. When these hydrocarbons are burnt they produces a new materials i.e. CO₂ and H₂O.

                             C₁₀H₂₀  +  15 O₂    →     10 CO₂  + 10 H₂O

Hence, it is also a chemical reaction.

You might be interested in
A 1.00 L volume of HCl reacted completely with 2.00 L of 1.50 M Ca(OH)2 according to the balanced chemical equation below. 2HCl
Neko [114]
The answer is D
6.00 M. I just took the test 
4 0
3 years ago
Read 2 more answers
If carbon has 6 neutrons how many protons does it have
amid [387]

Answer:

12

Explanation:

since the nutron and its carbon are in the periodic table it make the awnser 12

5 0
2 years ago
Read 2 more answers
The image above shows the nucleus of a nitrogen atom. How can the atomic number of nitrogen be determined?
Julli [10]
I think you forgot to attach the diagram along with the question. I am answering the question based on my research and knowledge. "Count the number of protons" is the one among the following choices given in the question by which the <span>atomic number of nitrogen be determined. The correct option among all the options that are given in the question is the second option or option "B".</span>
3 0
3 years ago
Read 2 more answers
[TG.05]Which of these statements best explains why P waves arrive earlier than S waves at the seismic station?
patriot [66]
The last answer: <span>P waves move straight through all medium and S waves move only through solids in a curvy motion.</span>
8 0
3 years ago
Read 2 more answers
The molar heat of fusion for water is 6.01 kJ/mol. How much energy must be added to a 75.0-g block of ice at 0°C to change it to
Alinara [238K]
I believe it is <span>25.04 kJ</span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • The Sun radiates energy through space and to the Earth's surface. Most of this energy is in the _______ part of the light spectr
    13·2 answers
  • What energy source is least expensive ?
    9·1 answer
  • eneegy is converted from solar to chemical in Process A and then from one form if chemical to another in Process B. Process A is
    11·1 answer
  • Chemical reactions will occur if_____.
    5·1 answer
  • What are the particles of solid,liquid,and gas
    10·1 answer
  • How does adding oxygen (O2) to this reaction change the equilibrium? 2SO2(g) + O2(g) ⇌ 2SO3(g)
    10·2 answers
  • A voltaic cell consists of an Mn/Mn2 half-cell and a Pb/Pb2 half-cell. Calculate [Pb2 ] when [Mn2 ] is 1.1 M and E cell is 0.44
    5·1 answer
  • Calculate the number of atoms in a 7.91×103 g sample of calcium.
    5·1 answer
  • Question 8 (1 point)
    14·1 answer
  • Hydrogen and iodine gas react to form hydrogen iodide, as shown in the equation H2(g) + I2(g) → 2HI(g). Suppose you are given a
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!