Explanation:
the guide welcomed the tourists.(into passive voice)
Answer:
D
Explanation:
--2 K (s) + __ H2SO3 (aq) --
-->
_K2SO3 (aq) + __H2
To balance this equation, all you need do is put a 2 in front of the K. The rest don't require any balancing coefficients.
Left
2 K
2 H
1 SO3
Right
K2
1 SO3
1 H2
It's balanced.
please post the complete question!
Answer:
a. A compound can be a pure substance.
b. A compound can be isolated.
Explanation:
a. A compound can be a pure substance.
This is because a compound which is made up of two or more atoms is also a pure substance since, a pure substance is a substance that contains only one type of matter - that is, it is in a single phase of matter.
Examples of compounds include water (H₂O) and ammonia (NH₃)
b. A compound can be isolated.
This is because, since it is a pure substance, it has unique properties which distinguish it from other compounds.