<span>If deltaH is positive, that means the reaction took heat from its environment (endothermic reaction).
The molar mass of O2 is 32 g/mol.
Therefore, 42g of O2 is equal to 1.3 moles O2.
The equation assumes 3 moles of O2. That means, only 1.3/3 = 43% of the delta H in the equation was formed.
824.2 kJ x 43% = 354 kJ. The closest answer is 1) the absorption of 361 kJ of heat.</span>
Answer:
713mmHg
Explanation:
By using Dalton's law of partial pressure, the pressure outside the gas container is equal to the pressure inside it and this pressure equals the sum of the pressures of water and the gas.
i.e, P(total) = P(gas) + P(water)
P(gas) = P(total) - P(water)
P(gas) = 735 - 22
P(gas) = 713mmHg
Answer:
Take this as a hint :
The value of the mole is equal to the number of atoms in just 12 grams of pure carbon-12. 12.00 g C-12 = 1 mol C-12 atoms = 6.022 × 1023 atoms • The number of particles in 1 mole is called avogadro's numberr (6.0221421 x 1023).
Explanation:
They all describe some type of movement.