It take in light and energy
Answer:
Ionic compounds are named with the cation first and the anion last. The same convention is used when writing their chemical formulas.
Explanation:
Answer:
7.99 moles of boron
Explanation:
Given data:
Number of moles of B = ?
Number of atoms of B = 4.81 × 10²⁴ atom
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
4.81 × 10²⁴ atom × 1 mol / 6.022 × 10²³ atoms
0.799 × 10¹ mol
7.99 moles
Sound waves are most effective when traveling through solids. Less effective when in liquids and least effective in air.
Answer:Correct
Explanation:According to the balanced chemical reaction, 2 mol FeBr3 are consumed for every 3 mol Na2S consumed.