A 0.218 g sample of impure magnesium hydroxide (Mg(OH)2, 58.32g/mol) was dissolved in 50.00 mL
of 0.120 M HCI. Back-titration of the excess acid
required 3.76 mL of 0.095 M NaOH. Calculate the
%purity of the Mg(OH)2
Mg(OH)2 + 2HCl → MgCl2 + 2H2O
HCI + NaOH → NaCl + H2O
A. 75.5%
B. 5. 13%
C. 0.16%
D.0.218%​

What is limiting reactant? with examples

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

Which of the following units is not an official si unit? mole liter kilogram ampere