When 100.0 mL of 0.40 M of HF and 100.0 mL of 0.40 M of NaOH are mixed, the resulting mixture is:a. a strong acid b. a strong base c. a weak acid d. a weak base e. a buffer

d. A weak base

Explanation:

For this question, we have to start with the reaction between and . So:

Now, we have to analyze each compound:

Fluorhydric acid HF this is a strong acid because it has the ability to produce hydronium ions

Sodium hydroxide NaOH this is a strong base because it has the ability to produce hydroxide ions

Sodium fluoride NaF is a salt in which the cation is and the anion is

Water Is a neutral molecule usually the solvent

Now, we have the reaction of a strong acid with a strong base. If we remember the conjugated base theory, a strong acid will produce a weak base. So, NaF is a weak base. We also have water, but this is a neutral molecule. With this in mind, the answer is d.

I hope it helps!

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.