Which of the following measurements is expressed to three significant figures?
C. 5.60 km
Hope this helps!
10 seconds = 8grams
then just divide by 2 another 4 times...
= 0.5grams after 50 seconds
Answer:

Explanation:
Hello!
In this case, since the molarity of a solution is calculated by diving the moles of solute by the volume of solution in liters, we first compute the moles of barium hydroxide in 35.5 g as shown below:

Then, the liters of solution:

Finally, the molarity turns out:

Best regards!
92 i am pretty sure
hope i helped
3.21e+11 is your answer for 321 millimeters in picometers. Hope this helps!