Answer:
Explanation:
First, convert the grams to moles, then convert moles to atoms.
1. Grams to moles
To convert from grams to moles, we use the molar mass. Phosphorus's molar mass is given to use.
- Phosphorus (P)= 30.97 g/mol
We can use this number as a fraction.
Multiply by the given number of grams (1.01)
Flip the fraction so the grams of phosphorus cancel out.
2. Convert Moles to Atoms
To convert from moles to atoms, we use Avogadro's Number.
This tells us the number of particles in 1 mole. In this case, it is atoms of phosphorus in 1 mole of phosphorus. We can create a fraction.
Multiply by the number of moles we calculated.
The moles of phosporus will cancel.
This is closest to 1.97*10²² atoms, so choice B is correct.
Answer:
H +
Explanation:
Acid are those species which donates the H+ ion when dissolved in a solution. In other way acid are those chemical species which donate proton to other species as proton means H+ ion so H+ ions are formed as a result of dissolution ..
Answer:-
pls find the answer in description
Explanation:
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Answer:
42.65g
Explanation:
Given parameters:
Mass of K = 4g
Unknown: Mass of KCl
Solution:
Complete equation of the reaction:
2K + Cl₂ → 2KCl
To solve this problem, we know that the reactant in short supply is potassium K and this dictates the amount of products that would be formed. The chlorine gas is in excess and we can't use it to determine the amount of product that would form.
Now, we work from the known to the unknown. Since we know the mass of K given in the reaction, we can simply find the molar relationship between the reacting potassium and the product. We simply convert the mass to mole and compare to the product. From there we can find the mass of KCl that would be produced.
Calculating number of moles of K
Number of moles =
Number of moles of K = = 0.103mol
From the given reaction equation:
2 moles of K will produce 2 moles of KCl
Therefore 0.103mol of K will produce 0.103mol of KCl
To find the mass of KCl produced,
Mass of KCl = number of moles of KCl x molar mass
Molar mass of KCl = 39 + 35.5 = 74.5gmol⁻¹
Mass of KCl = 0.103 x 74.5 = 42.65g
No molecular forces are at work. An increase in the temperature increases the speed the particlesof gas move.When energy is added to an object, its molecules move faster, creating more heat.