2 atoms of P (phosphorus) and 5 atoms of O (oxygen)
Explanation:
The chemical formula of a generic compound is written as
where
A and B are the symbols of the elements contained in the compound
n and m are the number of atoms of each element, A and B respectively
In this problem, the compound given is
where:
- P is the symbol of the chemical element phosphorus
- O is the symbol of the chemical element oxygen
We see that the number following P is 2, so there are 2 atoms of phosphorus, while the number following O is 5, so there are 5 atoms of oxygen.
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Answer:
1.152 miles
Explanation:
Given: central angle = 1 minute =
radius of the earth = 3960 miles
The length of an arc = 2
r
where: is the central angle, and r is the radius.
Thus,
Distance along the arc = 2
r
Distance along the arc = x 2 x
x 3960
= x 24891.4286
= 1.1524
The required distance along an arc is 1.152 miles.