Consider sweetened ice tea. which of the following is a solute?
a. water
b. the beverage itself
c. ice
d. sugar

the beverage itself and the sugar

Explanation:

The sweetened ice tea is a solution made up of the tea(beverage), water and sugar. It becomes chilled to form sweetened ice tea.

The sugar and the beverage is dissolved in the water to form a solution of the tea depending on the desired specification. Water here is the solvent because in it, the solutes are dissolved.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.