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
Anon25 [30]
3 years ago
14

Alex saw a rusty old car in an abandoned lot. Because he had recently read about chemical reactions, he began to wonder how the

rust formed. What happened to cause the rust on the steel car?
A. A decomposition chemical reaction took place when the iron in the steel mixed with oxygen to form rust.
B. oxygen in the air reacted with the paint on the car and formed rust
C. A physical change took place in the steel of the car to form rust
D. Oxygen in the air chemically combined with iron in the steel to form rust.
Chemistry
1 answer:
Mice21 [21]3 years ago
8 0

The answere is A .......


You might be interested in
Gerry and his family have moved into a new home with a great backyard. In the yard, they plan to have a garden, a lawn, and a pa
Anestetic [448]
The base of the garden in the scale drawing is 30 centimeters. (because 10x3 equals to 30)
The height of the garden in the scale drawing is 12 centimeters. (because 4x3 equals to 12)
The length of the patio in the scale drawing is 24  centimeters. (because 8x3 equals to 24)
The width of the patio in the scale drawing is 12 centimeters. (because 4x3 equals to 12)
5 0
3 years ago
Read 2 more answers
A certain material has a mass of 12.48 g while occupying 12.48 cm3 of space. What is this material?
Salsk061 [2.6K]
This material has a density of 1 g/cm3.
(since 12.48 g/ 12.48 cm3 = 1 g/cm3)

Therefore, this material is water.
5 0
3 years ago
Read 2 more answers
What Kelvin temperature is the same as -13° Celsius?
zavuch27 [327]

Answer:

Degrees Kelvin = Degrees Celsius + 273.15

Degrees Kelvin = -13 + 273.15

= 260.15 °

Explanation:

8 0
3 years ago
Given the heat change per mole for the combustion of methanol (-726 kJ/mol), predict the heat change that would occur if 0.200 m
DochEvi [55]

Answer:

-145.2kJ

Explanation:

Enthalpy is an extensive property as its value depends on the amount of substance present in the system.

If the enthalpy for one mole of methanol = -726 kJ/mol;

The Enthalpy for 0.2 mol is given as;

Enthalpy = 0.200 * 726

Enthalpy = -145.2kJ

It would take -145.2kJ for 0.200 mol of methanol to undego the combustion reaction.

8 0
3 years ago
Name two metalloids that are semiconductors
guajiro [1.7K]

The Metalloids are:

Boron.

Silicon.

5 0
3 years ago
Other questions:
  • Explain how Avogadro’s number can give two conversion factors
    13·1 answer
  • Find the potential difference required to accelerate protons from rest to 10% of the speed of light. (at this point, relativisti
    14·1 answer
  • How are elements that are gases at room temperature designated in the periodic table
    7·1 answer
  • What happens to earth materials when water flows over landforms?
    11·1 answer
  • Which requirement is essential for any of the chemical process that occur in cells to take place
    9·1 answer
  • What does group 4 in the periodic table all have in common
    8·1 answer
  • Why does the reaction H2O + Cu→no reaction not proceed to a product?
    15·2 answers
  • Describe nucleus of atom​
    6·2 answers
  • How do weak intermolecular bond strengths affect the melting and boiling point of a substance?
    11·1 answer
  • Which of the following statements is one
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!