Answer:
The lowest whole number ratio of the elements in a compound is called <u><em>the empirical formula.</em></u>
Step-by-step explanation:
A molecular formula consists of the chemical symbols of the constituent elements of a compound followed by numerical subscripts that describe the number of atoms of each element present in the molecule.
Then, the representation of the elements that form a compound and the proportion in which they are found, or the number of atoms that form a molecule is called the chemical formula.
The empirical formula is an expression that represents the simplest proportion in which atoms that form a chemical compound are present. It is then the simplest representation of a compound. Therefore, it is called the minimum formula.
In summary, the empirical formula is a formula that indicates the simplest integer ratio of all atoms in a molecule.
Finally, <u><em>the lowest whole number ratio of the elements in a compound is called the empirical formula.</em></u>
Answer:
Gusion = 2years
Lesley= 40years
Step-by-step explanation:
Let Guison age be x
Let Lesley age be y
If the sum of the ages of Gusion and Lesley is 42, then;
x+ y =42 ... 1
Four years ago
Guison age = x - 4
Lesley age = y - 4
If four years ago, Gusion was twice as old as Lesley, then;
x - 4 = 2(y-4)
x - 4 = 2y - 9
x - 2y = -9+4
x - 2y = -5 .... 2
Substract 1 from 2;
y + 2y = 1+5
3y = 6
y = 2
From 1;
x = 42 - y
x = 42-2
x = 40
Hence present age pf Guison is 2 years
Present age of Lesley is 40 years
Answer
Find out the the value of the fourth term in a geometric sequence for which
To proof
The formula for the general term for each geometric sequence is
where
Put n= 4
Solving
The value of the fourth term in a geometric sequence is 1.25 .
Hence proved
Answer:
24 dimes, the rest are quarters.
Step-by-step explanation:
100 quarters are $25. Subtract 21.40 to find how much that needs to be lowered and divide by difference in quarters and dimes(0.15).