Answer:
A five-sided shape is called a pentagon.
Explanation:
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<span>NPK ratio system is a conventional shorthand for the ratio of the nitrogen N), phosphorus (P) and potassium (K) in a fertilizer. It actually shows amount of P</span>₂O₅.
If we use 100 kg of P₂O₅:
m(P₂O₅) = 0,15 · 100 kg.
m(P₂O₅) = 15 kg.
m(P₂O₅) : M(P₂O₅) = m(P) : 2M(P).
15 kg : 142 = m(P) : 62.
m(P) = 6,55 kg.
ω(P) = 6,55 kg ÷ 100 kg · 100% = 6,55%.
Answer:
3.82 × 10 ^-23 g
Explanation:
6.02 x 10^23atoms = 1 mole of sodium
1 atom = 1/(6.02 x 10^23) mole
mass = mole × molar mass
= 1/(6.02 x 10^23) × 23
= 3.82 × 10 ^-23 g
<h3>
Answer:</h3>
18.65 L
<h3>
Explanation:</h3>
We are given;
- Initial volume of the container, V1 as 5.43 L
- Initial pressure of the container, P1 as 7.97 atm
- New pressure, P2 is 2.32 atm
We are required to calculate the container's new volume;
We are going to use Boyle's law
- According to Boyle's law the volume of a fixed mass of a gas and the pressure are inversely proportional at a constant absolute temperature.
- That is;

- At varying pressure and volume at constant temperature, k is the constant.
- Therefore;

Rearranging the formula;



Therefore, the new volume will be 18.65 L