It is 5 significant figures since the first 3 0s don't count
We are given with the initial volume of the substance and the molarity. The first thing that needs to be done is to multiply the equation in order to obtain the number of moles such as shown below.
number of moles = (40 mL) x (1 L / 1000 mL) x (0.3433 moles / L)
number of moles = 0.013732 moles
To get the value of the molarity of the diluted solution, we divide the number of moles by the total volume.
molarity = (0.013732 moles) / (750 mL / 1000 mL/L) = 0.0183 M
Similarly, we can solve for the molarity by using the equation,
M₁V₁ = M₂V₂
Substituting the known values in the equation,
(0.3433 M)(40 mL) = M₂(750 mL)
M₂ = 0.0183 M
MgCl2 would be magnesium chloride.
Answer:
Metals
Explanation:
Positive ions are formed when atoms give up some valence electrons in order to have a full octet. The atoms most likely to do this have a small number of valence electrons. Most to these atoms are generally in the s-block (left side) of the periodic table. These elements are metals.
*nonmetals are located in the p-block (right side) and noble gases are located in the 18th column (far right column)
