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
Difference Between Empirical and Molecular Formulas. The key difference between empirical and molecular formulas is that an empirical formula only gives the simplest ratio of atoms whereas a molecular formula gives the exact number of each atom in a molecule. In chemistry, we often use symbols to identify elements and molecules.
Hope I helped :)
The answer is Solid
Solids have a fixed volume, fixed shape, and cannot be compressed because their particles are close together
Correct Answer: <span>They have small differences in electronegativity (statement 3)
Reason:
The nature of chemical bond between atoms is primarily driven by the electronegativity difference between constituent atoms. If electronegativity difference between constituent atoms is significantly higher, ionic bond formation is preferred. On other hand, low difference in electronegativity values, favours formation of covalent bond.
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A solution that has a high amount of solute/concentration in the solvent is concentrated because if there is a lot of solute compared to the solvent, then the ratio of solute to solvent is higher, and thus the concentration is higher too.
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