25. Chemical equations should be balanced so that they demonstrate the Law of Conservation of Mass. Which statement about balanced chemical equations is correct?
A
The products must contain the same number and types of atoms as the reactants.
B. The products must contain the same arrangement of atoms as found in the reactants,
C. The products must contain the same number but not the same types of atoms as the reactants.
D. The products must contain the same types but not the same numbers of atoms as the reactants,

Answer asap need to be answered by wednesday morning explain how a buffer works, using an ethanoic acid / sodium ethanoate system including how the system resists changes in ph upon addition of a small amount of base and upon addition of a small amount of acid respectively. include the following calculations in your i. calculate the ph of a solution made by mixing 25cm3 0.1m ch3cooh and 40cm3 0.1m ch3coo-na+. [ka = 1.74 x 10-5 m] ii. calculate the ph following the addition of a 10cm3 portion of 0.08 m naoh to 500cm3 of this buffer solution. iii. calculate the ph following the addition of a 10cm3 portion of 0.08 m hcl to 200cm3 of the original buffer solution.

When microscope slides are stained to show blood cells, the small red blood cells that appear on the slides are much numerous than the large white blood cells. this supports the concept that

How many grams are there in one megagram