How many grams are in 3.01 x 1024 molecules of H2SO4

490. g H₂SO₄

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

3.01 × 10²⁴ molecules H₂SO₄

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of H - 1.01 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂SO₄ - 2(1.01) + 32.07 + 4(16.00) = 98.09 g/mol

Step 3: Convert

= 490.287 g H₂SO₄

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

490.287 g H₂SO₄ ≈ 490. g H₂SO₄

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.

58750.08068 is the answer i think