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anygoal [31]
3 years ago
12

Does anyone know how to do this?

Chemistry
1 answer:
Elanso [62]3 years ago
8 0
Work out each and total up. hope this helped.
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What are safety considerations for a zipline?
Lina20 [59]
The wire could break when your on it. Another one this is kind of personal if you don't stop yourself on the zip line you could slam off the rope or post.
4 0
3 years ago
what is the molecular formula of benzoyl peroxide (c7h5o2) of the molecular mass is 0.242 kg/mol?(show work please)
AfilCa [17]

Answer : The molecular formula of benzoyl peroxide is C_{14}H_{10}O_4

Explanation :

Empirical formula : It is the simplest form of the chemical formula which depicts the whole number of atoms of each element present in the compound.  

Molecular formula : it is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is :

n=\frac{\text{Molecular mass}}{\text{Empirical mass}}

As we are given that the molar mass of compound is, 0.242 kg/mol.

Molecular mass = 0.242 kg/mol = 242 g/mol      (1 kg = 1000 g)

The empirical mass of C_7H_5O_2 = 7(12) + 5(1) + 2(16) = 121 g/eq

n=\frac{\text{Molecular mass}}{\text{Empirical mass}}

n=\frac{242}{121}

n=2

Molecular formula = (C_7H_5O_2)_n = (C_7H_5O_2)_2 = C_{14}H_{10}O_4

Thus, the molecular formula of benzoyl peroxide is C_{14}H_{10}O_4

6 0
3 years ago
In a college of exactly 2940 students, exactly 60 % are male. What is the number of female students?
Norma-Jean [14]

Answer:1176

Explanation:

Number of male students: 2940*(60/100)=1764

So the number of female students would be:

2940-1764=1176

5 0
3 years ago
Read 2 more answers
4Fe + 3O2  2Fe2O3
LenKa [72]
Oxidation
iron+oxygen happened
6 0
3 years ago
CO 2 is an element. true or false
iren [92.7K]

Answer: false

Explanation:

f this helps typically an element wont have a 2 next to it, to see if something is an element or compound check for the element on the periodic table and see if the structure or name matches the one given to you on the question. for example here it is Co2 on the periodic table it's simply written as Co

co2 or carbon dioxide is a  compound not an element, you can even check this on the periodic table

7 0
2 years ago
Read 2 more answers
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