Asubstance is dissolved in water and produces hydronium ions. this occurs when hydrogen ions move from the substance to associate with water molecules. which term best matches the behavior of this substance?
a. arrhenius base
b. arrhenius acid
c. bronsted-lowry base
d. bronsted-lowry acid

B. Arrhenius acid

Explanation:

From the description of the problem we will have the following reaction:

In which the hydronium ion is produced .

By definition, an Arrhenius acid is a substance that can produce hydronium ions in solution.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

what is the average time it took the car to travel 0.25 meters?

⇒ 2.23 seconds

what is the average time it took the car to travel 0.50 meters?

⇒ 3.13 seconds