Im not sure if I got this one correct? Which pair of compounds that will make a buffer solution when combined. Place an ✖️ in front.
✖️H2CO3 & CO3
NH4+ & NH3
H2CO3 & C2H4O

Q2. Write the chemical formula of the conjugate base of each of the following compounds:
a.
CHO,
I
b.
H. PO ,

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

plz give brainliest

elements make up everything, and they combine to make compounds.

the answer is c

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)