Answer:
HIIT workouts are anaerobic, and cardiovascular endurance workouts are usually aerobic, depending on how much you work out. If you changed speed and switched to a different workout immediately after what you did before, your heart rate would increase, and you would experience pain on the side of your abdominal. It can be because your body isn’t used to the change in speed and endurance.
<u>Answer:</u> The correct answer is Option A.
<u>Explanation:</u>
To calculate the number of moles of a substance, we use the equation:

We are given:
Given mass of fluorine = 6 grams
Now, to know the moles, we divide the given mass of fluorine by the atomic mass/molar mass of fluorine.
Thus, the correct answer is Option A.
Answer:
is the change in enthalpy associated with the combustion of 530 g of methane.
Explanation:

Mass of methane burnt = 530 g
Moles of methane burnt = 
Energy released on combustion of 1 mole of methane = -890.8 kJ/mol
Energy released on combustion of 33.125 moles of methane :


is the change in enthalpy associated with the combustion of 530 g of methane.
Lemonade is a mixture because sugar, water and lemons are combined together without a chemical reaction taking place.