3. How many moles of sodium are needed to react with sulfuric acid to produce 3.75 moles of
sodium sulfate according to the following (unbalanced) reaction:
Na + _ H2(SO4) = __ Na2(SO4) + __ Hz

Explanation:

2Na + H₂SO₄ → Na₂SO₄ + H₂

From the equation of reaction, 2 moles of Na reacts with 1 moles of H₂SO₄ to produce 1 mole of Na₂SO₄.

1 mole of Na = 1 mole of Na₂SO₄

x moles of Na = 3.75 moles of Na₂SO₄

x = (3.75 * 1) / 1

x = 3.75 moles of Na.

3.75 moles of Na is required to produce 3.75 moles of Na₂SO₄

the answer is definitely c.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.