Question 1
what is the correct formula for ammonium carbonate?
1. nh4(co3)2
2. nh4co3
3. (nh4)2(co3)2
4. (nh4)2co3

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

How manyatoms of mercury are in 1.4214e+1 ml sample

What if it is did darwin used to support his theory of evolution