A 100 kg log of wood was neatly cut into two smaller pieces. What is the total mass of all the smaller pieces put together?

B

Explanation:

It is B because it's neatly cut into two parts, 50 and 50. That still adds up to 100 its the same total amount just cut up. So, 100 kg

its B. 100 cleanly cut in half is 50/50. but it's still gonna be 100 total.

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"

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.