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ANEK [815]
3 years ago
12

Please help very easy...

Chemistry
2 answers:
tamaranim1 [39]3 years ago
4 0

Answer:5

Explanation:because an element is any substance that cannot be split or divided into simpler substance by either chemical or pphysical means. And aluminium,iron,sulfur,copper and gold cannot be split into simpler means.

storchak [24]3 years ago
3 0

Answer:

C.) 5

Explanation:

The elements here are Sulfur (S), Iron (Fe), Copper (Cu), Gold (Au), and Aluminum (Al)

Hope this helps.

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5. Explain the difference between a molecular<br> element and a molecular compound.
n200080 [17]

Answer:

is that in a molecule of an element, all the atoms are the same. For example, in a molecule of water (a compound), there is one oxygen atom and two hydrogen atoms. But in a molecule of oxygen (an element), both of the atoms are oxygen.

Explanation:

3 0
3 years ago
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Less energy was entering Earth's
ololo11 [35]

Answer:

The temperatures on Earth increase

Explanation:

more energy results in more heat.

6 0
3 years ago
Choose the best explanation for chemical reactions not to produce radioactive particles.
amid [387]
"Only electrons are involved in chemical reactions" is the statement among the following choices given in the question that is the <span>best explanation for chemical reactions not to produce radioactive particles. The correct option among all the options that are given in the question is the third option or option "C". </span>
4 0
3 years ago
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What is the emperical formula of a compound containing 40.1% carbon and 6.6% hydrogen​
levacccp [35]

Answer:

CH₂

Explanation:

Given parameters:

Percentage composition:

          Carbon  = 40.1%

          Hydrogen  = 6.6%

Unknown:

Empirical formula of the compound  = ?

Solution:

The empirical formula of a substance is its simplest formula.

 Elements                             Carbon                             Hydrogen

Percentage

Composition                           40.1                                     6.6

Molecular mass                        12                                         1

Number of moles                  40.1/12                                  6.6/1

                                                3.342                                    6.6

Divide through by

the smallest                         3.342/3.342                           6.6/3.342

                                                      1                                        2

So the empirical formula of the compound is CH₂

5 0
3 years ago
C2h3br Lewis structure
MrRa [10]

HELLO THERE, I HOPE MY ANSWER WILL HELP YOU :)

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.

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THE IMAGE BELOW HAS THE STRUCTURE IMAGE

6 0
4 years ago
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