Sorry man i sad to see i’m late
Answer:
They form crystals,They're good insulators
Explanation:
6.023 x 10²³ particles in 1 mole of Boron
1.61 x 10³⁴ particles in = 1.61 x 10³⁴ / 6.02 x 10²³
= 2.61 x 10³⁰ moles of Boron.
Answer:
5
Explanation:
Sorry, don't have one
<u><em>Hope this helps and I get brainliest <3</em></u>
Answer is: the mass of the oxygen is 2.37 grams.
Balanced chemical reaction: 2Mg + O₂ → 2MgO.
m(Mg) = 3.6 g; mass of magnesium.
n(Mg) = m(Mg) ÷ M(Mg).
n(Mg) = 3.6 g ÷ 24.3 g/mol
n(Mg) = 0.149 mol.; amount of the magnesium.
n(O₂) = ?
From chemical reaction: n(Mg) : n(O₂) = 2 : 1.
n(O₂) = n(Mg) ÷ 2.
n(O₂) = 0.149mol ÷ 2.
n(O₂) = 0.075 mol; amount of the oxygen.
m(O₂) = m(O₂) · M(O₂).
m(O₂) = 0.075 mol · 32 g/mol.
m(O₂) = 2.37 g; mass of the oxygen.