3 years ago

BTW THIS A 2 QUESTION TEST THERE WILL BE 2 THINGS TO ANSWER

1 answer:

8 0

William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substances involved in the rusting process of iron?

Iron is (B) an element.

with one kind of atom that combines with oxygen from the air to form rust (iron oxide). Rust contains two types of atoms, which means it is

(A) a compound

Hope this helps. Have a nice day.

You might be interested in

A hydrogen atom Is In Its ground state when Its orbital electron is what

cricket20 [7]

Answer: K-core , 1s orbital

Explanation: Electron of Hydrogen atom has lowest energy

when it is in K core (1s-orbital)

8 0

3 years ago

The speed of a 2 kg mass on a spring is 5 m/s as it passes through its equilibrium position. What is its frequency if the amplit

Lena [83]

Solution :

Given :

Mass of the object attached to the spring, m = 2 kg

Velocity of the object as it moves, V = 5 m/s

Amplitude of the object as it swings, A = 2.5 m

We have to find the frequency of the object.

We known,

$V_{max} = \omega A = 2 \pi f A$

Therefore, $f= \frac{V_{max}}{2 \pi A}$

$f= \frac{5}{2 \times 3.14 \times 2.5}$

f = 0.32 Hz

Therefore the frequency of the object is 0.32 hertz when the amplitude of the 2 kg mass is 2.5 m moving a speed of 5 m/s.

3 0

3 years ago

Adding a catalyst to a reaction has an effect similar to

mariarad [96]

The answer to your question is B.

8 0

3 years ago

What is pulling force expansion

Aloiza [94]

Answer:

physical cosmology, the Big Rip is a hypothetical cosmological model concerning the ultimate fate of the universe, in which the matter of the universe, from stars and galaxies to atoms and subatomic particles, and even spacetime itself, is progressively torn apart by the expansion of the universe at a certain time

3 0

3 years ago

Read 2 more answers

What is the function of layer of air trapped under the hovercraft

aev [14]

Answer:b

Explanation:

3 0

3 years ago