You have 185 ml of an acid with an unknown concentration. to determine the concentration you decide to use a 0.85 m solution of sodium hydroxide to titrate the acid. after the titration you determined that it took 35.7 ml of the 0.85 m solution of sodium hydroxid to reach the endpoint. what is the acids concentration?

Explanation:

The given data is as follows.

        = ?,         = 0.85 M

        = 185 mL,     = 35.7 mL

where, is concentration of acid

            is the volume of acid

            is the concentration of base

            is the volume of base

According to the neutralization formula.

          =

Now, substituting the given values into the above formula as follows.

          =

          =

                        = 0.164 M

Thus, we can conclude that concentration of acid is 0.164 M.

why is cellular respiration important for homeostasis?

it changes food into energy that the organism can use.

which of the following is most likely to happen if a cell is not able to divide?

the cell will not be replaced when it is damaged.

explanation:

"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"