Answer:
If a metal is less reactive than carbon, it can be extracted from its oxide by heating with carbon. The carbon displaces the metal from the compound, and removes the oxygen from the oxide. This leaves the metal.
Answer:
Limestone is a pure substance
Explanation:
It includes many elements and compounds that make it more difficult to break down Limestone.
Answer: 1) A. It is the site of photosynthesis, where glucose is produce.
2) C. The large vascuole is like a water-filled balloon. When the plant is water-stressed, the water leaves the vacuole and the cells shrink.
B. At-200
In beta decay the atomic number increases by 1
Answer:
Empirical Formula:
The empirical formula of a compound is the simplest whole-number ratio of the numbers of the different atoms that compose the molecule of the compound. The empirical formula looks like a molecular formula.
C
2
H
2
and
C
H
are the molecular formula and the empirical formula of acetylene.
The Given Data
The mass of carbon in the compound:
m
C
=
40.6
g
The mass of hydrogen in the compound: {eq}m_H = 5.1 \ \rm...