Answer:
We have to add 2RbNO3 (option A)
10 Rb +2RbNO3 → 6 Rb2O + N2
Explanation:
Step 1: The equation:
10 Rb + _____ —> 6 Rb2O + N2
Step 2: Balancing the equation
On the right side we have 6x2 = 12 Rb atoms.
On the left side we have 10x Rb
This means we need to add 2x Rb on the left side.
On the right side we have 2x N, On the left side 0x N.
This means we need to add 2x N on the left side.
On the right side we jave 6x O, on the left side we have 0x O.
This means we need to add 6x O on the left side.
We add this by adding RbNO3
This means we have to add 2x RbNO3 (option A)
10 Rb +2RbNO3 → 6 Rb2O + N2
Answer:
C
Explanation:
It can already be seperated because the mixture hasn't disolved into the water yet.
This certain type of rock is constructive, not only from the fact that it was made up from earthly habits. But also it breaks down very easily, which can help the environment. Therefore a sedimentary rock is constructive.
Answer:
2 moles of Substance B
Explanation:
Because 1 mole of any substance contains 6.02× 10²³ particles either atoms, molecules, ions or even electron(Avogardo Constant)
Therefore 12.04 × 10²³/ 6.02× 10²³ = 2 mole of Substance B
