Assuming that the 18.8% composition is based on mass,
therefore the mass of Lithium would simply be the product of the fractional
composition and the total dose. That is:
18.8 % = 0.188
mass Lithium = 0.188 * 1.00 g = 0.188 g
Answer:
<span>0.188 g</span>
Answer:
C. Dissecting microscope
Explanation:
It is trying to see the surface
Volume = 20.0 cm³
density = 19.3 g/cm³
Therefore:
mass = density * volume
mass = 19.3 * 20.0
mass = 386 g
Answer:

Explanation:
Hello,
In this case, since the solution is formed by sodium chloride and water, we understand that for one mole of solution, we have 0.132 moles of sodium chloride and 0.868 moles of water, therefore, by using their molar masses we can compute their masses in the solution:

Thereby, we can compute the weight/weight percent as follows:

So we use the previously computed masses:

Best regards.