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Naya [18.7K]
2 years ago
6

Please help I need to pass this test

SAT
1 answer:
KengaRu [80]2 years ago
3 0

Answer:

A

Explanation:

2(15-5)+2

2*10+2

20+2

=22

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when iron rusts and forms iron oxide, the iron oxide has more mass than the iron. which statement correctly explains this observ
GarryVolchara [31]

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

8 0
2 years ago
The characteristics of organisms never change true or false
Marrrta [24]

Answer:

true

Explanation:

8 0
2 years ago
(6.31 x 10x^5) + (2.6 x 10^4
arsen [322]

Answer:

1/10 x ( 631x^5+2650000)

=0.1( 631x^5 + 2600000)

8 0
2 years ago
On a biased dice the probability of getting a 1 is 0.3
gogolik [260]

Answer:

I think it is 45

n = number of rolls = 150

p = probability of rolling a “1” = 0.3

n*p = expected number of “1”s that show up out of the 150 rolls

n*p = 150*0.3

n*p = 45

Explanation:

hope this helps if not let me know

4 0
2 years ago
1. Jim would like to learn more
Marizza181 [45]

Answer:

Advanced Placement

Explanation:

AP classes put you in college classes while in highschool

7 0
3 years ago
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