Answer:
25th electron
Explanation:
the last electron is the valence electron. Assuming it has equal numbers of protons and electrons, then the 25th electron is the valence.
<span>A hydrocarbon is a molecule whose structure includes only hydrogen and carbon atoms. Hydrocarbons containing between six and ten carbon molecules are the top components of most fuels. In general, these molecules are burned to produce energy. Examples such include: 1. Methane: A fuel in electrical generation. 2. Propane: Generally used heating and cooking. 3. Butane: Generally used in lighters and aerosol cans. 4.Heptane: The major component of gasoline Hydrocarbons are majorly used as a combustible fuel source and are considered a primary source of energy for contemporary civilizations. Oil is an excellent example of a hydrocarbon fuel currently in use all over the world.</span>
Answer:
lead (II) chlorate
Explanation:
precipitate means not soluble in water
potassium chlorate is not very soluble in water, it precipitates and may be collected by filtration
lead(II) chloride can be made as a white precipitate by adding a solution containing chloride ions to lead(II) nitrate solution
thoughtcocom chemguidecouk
Answer:
The height of the waves vary. The wave height is much larger for the air boat than for the mosquito.
Explanation:
Plato question
A solution isn´t a pure substance.
a.solution
solution: a homogeneous molecular mixture of 2 or more substances.
Example of solutions: H2O +NaCl.; wine+ water, milk + water.
