Answer:
b
Explanation:
because motions make things hotter
Answer:
Nitrogen is the main component because it comprises 78% of total air while oxygen comprises 21%

Answer:
epidermal! hope this helps u!
Answer:
Neither
Explanation:
Even though the average between the 4 measurements is 7.45, the measurements are not accurate. This is probably due to the pH meter being out of calibration or because there is some contamination in the buffer solution
To find the molarity of the compound, simply determine the molar mass of MgCl2 and then convert 50 g to moles using the molar mass of the compound. Then convert 150 ml to L = 0.15 L
Then divide the moles amount by the volume in L.