<span>The flame goes out on a burning match when sodium carbonate and hydrochloric
</span>
Answer: The quantity of heat required is 358.644 J.
Explanation:
Given: Specific heat capacity = 
Mass = 1.50 g


Formula used to calculate heat energy is as follows.

where,
q = heat energy
m = mass
C = specific heat capacity
= initial temperature
= final temperature
Substitute the values into above formula as follows.

Thus, we can conclude that quantity of heat required is 358.644 J.
Answer : The correct option is, (2) 8 mole of hydrogen will react with 1 mole of sulfur.
Explanation :
The balanced chemical equation is,

By the stoichiometry we conclude that, 8 moles of hydrogen react with 1 mole of sulfur to give 8 moles of hydrogen sulfide.
Hence, the correct options is, (2) 8 mole of hydrogen will react with 1 mole of sulfur.
The rate of change of the temperature of the Earth's surface is given to,
90°F/mile
To determine the temperature x miles away from the surface, we multiply the depth by the given rate. This will give us the answer of,
T = (90°F/mile)(90 mile)
= 8100°F
Thus, the temperature 90 miles deep in the Earth's surface is equal to 8100°F.
Pour the mixture through a filter to remove the pebbles, then add water to dissolve the salt and then filter out the pepper, and then evaporate the salt.