Sorry, I can't really see the question )-:
The temp. increase was 8.50 degrees <span>C. (my b)
It requires 4.184J to increase the temp. of a 1g solution by 1 degrees </span><span>C.
Total heat required is 16,143J.
Molar Mass NaOH is 40g/mol
Evolved heat/mol NaOH = 51,045J.</span>
Answer:
C
In an exothermic reeaction, the energy of products is less than the energy of reactants.
Explanation:
1. Why is preserving biodiversity in the Galápagos islands
an important worldwide concern ?
Many species unique to the islands may become extinct.
2. What do the Endangered Species Act and the Convention on
Biological Diversity have in common?
Their aim is to prevent extinctions.
3. What is a greenhouse gas?
a gas that absorbs and re-releases heat radiated by the
earth
4. Lowering sulfur dioxide emissions would have the greatest
impact upon which of the following environmental phenomena?
acid rain
5. Which of the following is beneficial to human health and
the environment?
stratospheric ozone
6. Which of the following contributes to global warming?
greenhouse gases
7. An incident in Donora, Pennsylvania, led to which of the
following actions?
enacting air pollution laws
8. Which of the following is not a greenhouse gas?
water vapor
9. What is the most common method of solid waste disposal in
the United States?
landfill
10. Which device is used to reduce gaseous emissions from a
mobile source?
scrubber
Answer:
a) 0.2118 mol of I₂ is produced.
b) 49.93 g of I₂ is produced.
Explanation:
a) The balanced equation shows that to produce 1 mol of I₂ we need 2 mol of CuCl₂ . Therefore, the amount of I₂ produced will always be half the amount of CuCl₂ given.
b) In order to calculate the mass of I₂ produced we need to know its molar mass:
Each mole of I₂ weighs 253.8 g, therefore MM = 253.8 g/mol.