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lilavasa [31]
3 years ago
7

FORENSIC SCIENCE HELP

Chemistry
1 answer:
Annette [7]3 years ago
7 0
That is correct c
Explanation
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A piece of magnesium ribbon reacts with oxygen to form magnesium oxide, mgo. what is the percent composition of the compound? qu
Wittaler [7]

The Percent composition of  MgO is 60.304 % and 39.696 % respectively.

<h3>What percentage of the given chemical is there?</h3>

Mg + 1/2O₂ -------> MgO

We now want to know the percent composition of MgO in light of this reaction. Since the original reactants' and the product's mass are not provided, we can use the component's atomic weights to solve this problem.

Let's compute the molar mass of MgO since Mg has a molecular weight of 24.305 g/mol and O has a molecular weight of 15.999 g/mol:

molar mass of MgO= 24.305 + 15.999 = 40.304 \frac{g}{mol}

Now with this weight, let's see the percent composition of this compound:

Mg percentage  =\frac{24.305}{40.304 * 100}  = 60.304%

O percentage = \frac{15.999}{40.304 * 100}  = 39.696 %

The Percent composition of  MgO is 60.304 % and 39.696 % respectively.

Learn more about percent composition here:-

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8 0
1 year ago
Es una mezcla de gases que rodea la Tierra​
DENIUS [597]

Answer:

 El aire es una mezcla de gases que forman la atmósfera, es por ello que se encuentra en todas partes. Sus componentes principales son el nitrógeno, oxígeno, dióxido de carbono, neón, helio, entre otros.

8 0
3 years ago
If the amount of atoms of each type on the left and right sides of a reaction differ, what must be done to balance it?
REY [17]
I think it's letter:
B.Coefficients are placed in front of the reactants and/or products
6 0
4 years ago
The bridge over the river has a weight limit of 12.65 tons to cross it. The truck weighs 10.89 tons. How many tons is the truck
Delvig [45]

Answer:

It is 1.76 tons under the weight limit.

Explanation:

12.65

-10.89

= 1.76

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3 years ago
What word is used for the horizontal rows of the periodic table?
Alex73 [517]
The word for horizontal rows of the periodic table is a period

7 0
4 years ago
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