Answer:
The answer is option D.
Explanation:
In balancing in acidic solutions, the oxygen is accounted for by adding a water molecule or H2O on the side that needs oxygen and 2H+ molecules for every H20 molecules placed on the other side of the equation.
The H+ and H2O molecules are in the ratio 2 : 1
Hope this helps you
Answer:
there are 2 types of mixtures
Explanation:
homogeneous
heterogeneous
Answer:
Picture D represents the only possible option as the Picture D rearranges the atoms whereas A, B, and C did not. Option D
Explanation:
We can see in the pictures A, B and C the atoms are not arranged properly if we keep the fundamental image in view. By comparing all the images you will observe how the atoms in the fundamental image are differently represented in image A, B and C. Also the fundamental image have 10 atoms whereas all the option except D varies the number of atoms
The dissociation of formic acid is:
The acid dissociation constant of formic acid, is:
Rearranging the equation:
pH = 2.75
Substituting the values in the equation:
Hence, the ratio is .
Assuming that the percentage composition is on the basis of weight percentage, therefore the mass of lithium would simply be the product of the two, that is:
mass Lithium = 0.188 * 1.70 g
mass Lithium = 0.3196 g = 0.32 g