Answer:
H3PO4 Mol mass..
= (3 x H1 = 3) + (1 x P31 = 31) + (4 x O16 = 64). = 98g/mol.
a)..Hydrogen: = 3 / 98 = 0.0306 x 100% = 3.06%.
b)..Phosphorus = 31/98 = 0.3162 x 100% = 31.63%.
c)..Oxygen = 64/98 = 0.6531 x 100% = 65.31%.
(Total = 100% H3PO4).
Explanation:
Find the molar mass of all the elements in the compound in grams per mole.
Find the molecular mass of the entire compound.
Divide the component's molar mass by the entire molecular mass.
You will now have a number between 0 and 1. Multiply it by 100% to get percent composition.
Answer: 1) The element that would be the most effective at accepting electrons from another reagent is Cl.
2) The element that would be expected to be the best insulator is Cl (non-metal).
3) The element that is best able to form an ionic compound with sulfur is Rb.
Explanation:
Metals are the species which readily lose electrons in order to attain stability and non-metals are the species which readily accept an electron in order to attain stability.
Generally, metals on combining with non-metals lead to the formation of an ionic compound. For example, is an ionic compound where Rb is the metal and S is the non-metal.
Out of the given option Cl is highly electronegative in nature so it will readily accept an electron from a donor atom.
Insulator are the substances which do not allow electric current to pass through them. For example, non-metals are insulators.
Thus, we can match the elements below to the appropriate blanks in the following sentences.
1) The element that would be the most effective at accepting electrons from another reagent is Cl.
2) The element that would be expected to be the best insulator is Cl (non-metal).
3) The element that is best able to form an ionic compound with sulfur is Rb.
The solubility constant or Ksp is calculated by the product of the concentration of the ions raise to the stoichiometric coefficient. We calculate as follows:
BaCrO4 = Ba2+ + CrO42-
Ksp = [Ba2+][CrO4]
Ksp = [1.08×10−5<span> ] [1.08×10−5] = 1.1664x10^-10</span>
Answer:
Acid rain
Explanation:
The independent variable in the hypothesis statement is the acid rain. An independent variable is usually the cause in an experiment.
This variable give rises to the effects observed as the dependent variable.
In the presence of the acid rain, the fish population will increase.
The dependent variable is the fish population or number of fishes.
The independent variable is the acid rain as it is the cause of the effect observed on the fish population.
This has caused water to rise up and warming up