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ArbitrLikvidat [17]
2 years ago
8

when iron rusts and forms iron oxide, the iron oxide has more mass than the iron. which statement correctly explains this observ

ation?
SAT
1 answer:
GarryVolchara [31]2 years ago
8 0

The reason why iron oxide has more mass than the iron is because Iron oxide has oxygen atoms, and pure iron does not.

When iron rusts and forms iron oxide, the iron oxide has more mass than the iron. Which statement correctly explains this

observation?

(A)Iron oxide has oxygen atoms, and pure iron does not.

(B)The oxygen atoms in iron oxide have more mass than the iron atoms in pure iron.

(C)The iron atoms in iron oxide have more mass than pure iron.

(D)There are more iron atoms in iron oxide than in pure iron.

When a chemical reaction takes place, other atoms are combined with pure elements to form compounds. This addition of another atom (oxygen) after reaction makes iron oxide formed heavier than pure iron.

Iron oxide is a chemical substance formed when pure iron rusts. The formation of iron oxide is a chemical reaction.

Hence, the correct answer to the question is;  the iron is heavier  because Iron oxide has oxygen atoms, and pure iron does not.

Learn more: brainly.com/question/6284546

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How can you visit the sun without burning up worksheet answer key
Lesechka [4]

How can you visit the sun without burning up worksheet answer key is a heading for a worksheet that involves mathematical questions to calculate. The attached file displays those mathematical questions.

Before that, the sun is known as a star that is located in the middle of the Solar system. It is a virtually flawless sphere of hot plasma that has been heated by nuclear fusion processes in its center, thereby radiating energy as infrared radiation and ultraviolet light.

It is nearly impossible to visit the sun due to the degree of its temperature and radiation.

  • From the image attached below which depicts the heading to the question, we have:

a) 5(x - 9) = 2x + 15

Open brackets

5x - 45 = 2x + 15

Collect like terms

5x - 2x = 45 + 15

3x = 60

x = 60/3

x = 20

b) \mathbf{ 7n - 20 = 9(4n + 1)}

Open brackets

7n - 20 = 36n + 9

7n - 36n = 20 + 9

- 29 n = 29

n = - 29/29

n = - 1

Therefore, from the given information, we can conclude that It is nearly impossible to visit the sun due to the degree of its temperature and radiation. Also, the value of x = 20 and the value of n = -1

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brainly.com/question/22693059?referrer=searchResults

4 0
3 years ago
5. Sound your horn __________________.
VARVARA [1.3K]
I think c is correct
7 0
3 years ago
Read 2 more answers
If |2x - 2| > 2, what is the range of x?
EastWind [94]

Answer:

B is the answer

X < = 0 or x > =2

Explanation:

2x -2 >= 2 or 2x-2 < = - 2

2x > =4 Or 2x < = 0

X > =2. Or x < = 0

7 0
3 years ago
When a coin is dropped, it falls to the ground. as the coin falls, it loses potential energy and gains what kind of energy?
Ronch [10]

Answer:

kinetic energy

Explanation:

As an object falls from rest, its gravitational potential energy is converted to kinetic energy

6 0
2 years ago
Rewrite the equation from step 1 substituting in the value of.
Masteriza [31]

By rewriting the equation from step 1 substituting the value of k into it, the value of x is 22.5

A direct variation is a type of variation that has two types of variables in which a variable can be expressed in terms of the other with its constant.

For example;

If  x varies directly as y

<h3>Step 1:</h3>

Then

  • x \sim y
  • x = ky ; where k is constant

<h3>Step 2:</h3>

The original question says:

  • if x varies directly as y, and x = 9 when y = 6, find x when y = 15

∴

x = ky    

9 = k × (6)

k = 9/6

k = 1.5

<h3>Step 3:</h3>

Now, we can rewrite the equation from step 1 substituting the value of k into it:

∴

x = ky

  • when y = 15 and k = 1.5

The value of (x) will be:

x = 1.5 (15)

x = 22.5

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5 0
2 years ago
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