How many molecules of carbon monoxide gas can be produced from 395 grams of oxygen gas ?
1 answer:
The answer for the following problem is mentioned below.
- <u><em>Therefore 148.125 × 10^-23 molecules of the cabon monoxide gas is produced.</em></u>
Explanation:
Given:
mass of the oxygen gas = 395 grams
We know;
For the production of the carbon monoxide;
The equation is,
Before balancing the equation;
C + → CO
After balancing the equation;
2 C + → 2 CO
where,
C = carbon molecule
O = oxygen molecule
CO = carbon monoxide
For the equation,
32 grams of oxygen gas → 2 × 6.023 × 10^-23 molecules
395 grams of oxygen gas → ?
=
= 148.125 × 10^-23 molecules of the carbon monoxide
<u><em>Therefore 148.125 × 10^-23 molecules of the cabon monoxide gas is produced.</em></u>
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Answer:
2gcm⁻³
Explanation:
Given parameters:
Mass of the object = 20g
Volume = 10mL
Unknown:
Density of the object = ?
Solution:
Density of a body is its mass per unit volume;
Density =
We need to convert mL to cm³ for the volume
1mL = 1cm³;
10mL is therefore, 10cm³
So;
Density = = 2gcm⁻³
Answer:
Sulfur: -1
Carbon: 0
Nitrogen: 0
Explanation:
The thiocyanate ion SCN- can have only two resonance structures, which are:
S - C ≡ N <--------> S = C = N
In the first structure, we have one single bond and one triple bond, in this case, the negative charge is located in the sulfur. This is because Sulfur have 6 electrons and those electrons are present in the atom, (see picture below), and counting the electron that is sharing with the Carbon, the total electrons that sulfur has is 7 (It has one more than usual). Carbon and nitrogen are already stable with 0 of formal charge, because carbon can only have 4 electrons which 1 is sharing with sulfur and the other 3 with the nitrogen, and nitrogen have 5 electrons, three sharing with carbon and the other two kept it for itself.
In the second structure, the negative charge of the sulfur is transfered to the nitrogen, meaning that it has 6 electrons the nitrogen (formal charge -1) and carbon and sulfur with 4 and 6 electrons respectively.
Between these two structures, the most stable is the first one basically because Sulfur is a better nucleophile than the Nitrogen, and can form stronger hydrogen bond in acid, giving more stable structure.
