Answer:
6g O2
Explanation:
Mole to mole ratio:
A balanced chemical equation shows a chemical reaction while maintaining the law of conservation of mass. The coefficients of the substances are known to be very helpful in computations as they represent the equivalent amounts of moles of the species that would be participating in the reaction.
We set up the chemical equation and then find the balanced chemical expression.
S+O2→SO3
Balance
2S+3O2→2SO3
We use the following values for the variables:
mS=4.0 gm
We proceed with the solution.
mO2= 4 g S × 1 mol S/ 32 g S × 3 mol O2/ 2 mol S × 32g O/ 1 mol O2
mO2 = 6 g
learn
brainly.com/question/17961582?referrer=searchResults
The answer is
14.14 x 10^-2
Answer: D- A seed that contains an embryo plant grows into a young pine tree.
Explanation: The embryo plant comes from a pinecone seed so it can grow into a new plant.
Answer : The mass of 
added must be, 61.9 grams
Explanation : Given,
Mass of 
= 40 g
Molar mass of = 105.9 g/mol
First we have to calculate the moles of .
Now we have to calculate the moles of 
The balance chemical reaction will be:
From the balanced reaction we conclude that
As, 1 mole of react with 1 mole of
So, 0.378 mole of react with 0.378 mole of
Now we have to calculate the mass of
Molar mass of = 164 g/mol
Thus, the mass of added must be, 61.9 grams
<h2>
Required Answer :- </h2>
- In the question it is asked how many numbers of protons are present in a sodium atom.
- We know that the atomic number of sodium is 11.
- Sodium atom means it is in its neutral state, the neutral sodium atom has no charge on it.
- We know that the atomic number of an element is always equal to the number of protons for the particular element.
- Therefore the atomic number of sodium is 11 and the number of protons in sodium are 11.
<h3>Additional information :- </h3>
- If we know the atomic number of an element then only we can find the number of protons, neutrons and electrons present in it. The number of electrons in an element is equal to the atomic number of the respective element
- The atomic weight of the sodium is 23.
- The number of neutrons in sodium = Atomic weight of sodium – number of protons in sodium
= 23 – 11 = 12.
- So, the number of neutrons in sodium is equal to 12.
- The number of electrons in sodium is equal to the atomic number of sodium. Then the number of electrons in sodium is equal to 11.
- Therefore the number of protons, neutrons and electrons in sodium are 11, 12 and 11 respectively.
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