Answer:
For federal offices (President, Vice President, and United States Congress), Election Day occurs only in even-numbered years. Presidential elections are held every four years, in years divisible by four, in which electors for President and Vice President are chosen according to the method determined by each state.
Explanation:
<span>The force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.</span>
C.sound from a radio does not create waves.. others listed do.
Answer:
Element Fluorine
Explanation:
The chemical element fluorine is a gas that has a mass number of 19.
Answer: The molecular formula of the compound is
Explanation:
If percentage are given then we are taking total mass is 100 grams.
So, the mass of each element is equal to the percentage given.
Mass of C = 37.5 g
Mass of H = 12.5 g
Mass of O = 50.0 g
Step 1 : convert given masses into moles.
Moles of C =
Moles of H =
Moles of O =
Step 2 : For the mole ratio, divide each value of moles by the smallest number of moles calculated.
For C =
For H=
For O =
The ratio of C: H: O = 1: 4: 1
Hence the empirical formula is .
The empirical weight of = 1(12)+4(1)+1(16)= 32g.
The molecular weight = 93.0 g/mole
Now we have to calculate the molecular formula.
The molecular formula will be=