<span>2.51 grams
You want to prepare 19.16 g of some solution which will have 13.1% of it's mass being sucrose. So we just need to perform some simple multiplication:
19.16g * 0.131 = 2.50996g
Rounding to 3 significant figures gives 2.51 g.</span>
19. The atomic number is the same as protons and electrons unless it have a - or a + charge the electrons are going to change
The spinal cord is part of the central nervous system
PH + pOH = 14
pH + 8 = 14
pH= 6