Answer: 1/2L
Explanation:
Volume and pressure are changed, so use Boyle's law.
P1V1=P2V2
Convert 303.9kpa to atm by mutiplying by (1/101.3)=3atm
Plug in:
1.5(1)=3(V2)
V2=1/2 L
This makes sense since volume and pressure are inversely proportional. The pressure is increased, so the volume must decrease.
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Answer:</h3>
B. It loses an electron and has an octet in its inner-most shell
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Explanation:</h3>
- Rubidium is a metal in the chemical family known as alkali metals.
- Metallic elements form ions known as cation by losing electron(s) from their outermost energy levels to attain an octet configuration.
- Rubidium has one electron in the outermost energy level, and thus, loses the electron to form a cation and forms an octet configuration.
- Like other alkali metals such as potassium and sodium, it forms a cation with a charge of + 1.
The maximum of electron an orbital in the f sublevel can hold is 2
The are 7 orbitals in the f sublevel
The entire sublevel can hold up to 14 electrons
long story short, the answer is c. 2
The balanced equation for the above reaction is as follows;
3NaOH + H₃PO₄ ---> Na₃PO₄ + 3H₂O
stoichiometry of NaOH to H₃PO₄ is 3:1
the number of NaOH moles in the solution - molarity x volume
number of NaOH moles - 0.3 mol/L x 0.030 L = 0.009 mol
for complete neutralisation
3 mol of NaOH requires 1 mol of H₃PO₄
therefore 0.009 mol of NaOH requires - 1/3 x 0.009 = 0.003 mol of H₃PO₄
therefore 0.003 mol of H₃PO₄ are needed to reach the equivalence point
I'm pretty sure it's A because its just sand and everything else is mixed with something Hope that helped Have a good day! :-)