Eli states that sodium phosphate is a mixture because it is composed of both sodium ions and phosphate ions.

Chemistry

2 answers:

KonstantinChe [14]2 years ago

7 0

Answer is: c. It is incorrect because sodium phosphate is a compound that has a single composition.

Sodium phosphate is chemical compound composed of atoms connected with chemical bonds.

Pure substance is made of only one type of atom (element) or only one type of molecule (compound), it has definite and constant composition with distinct chemical properties.

Pure substances can be separated chemically, not physically, that is difference between pure substances and mixtures.

Veseljchak [2.6K]2 years ago

6 0

C is the answer just took the test

You might be interested in

How do I do c2h6 + O2 = CO2 + H2O

Setler [38]

I would tell you... but there is a lot of information... just type in online what you asked, and you will get lots of info.

5 0

2 years ago

Suppose 0.363 g of barium acetate is dissolved in 100. mL of a 25.0 m M aqueous solution of ammonium sulfate. Calculate the fina

sdas [7]

Answer:

Molarity of Ba²⁺ is 0M

Explanation:

Some barium ion, Ba²⁺ is produced when barium acetate is dissolved (Moles of barium acetate = moles of Ba²⁺ in solution). Then, Ba²⁺ reacts with sulfate ion to produce BaSO₄, an insoluble salt. The concentration of Ba²⁺ is the initial concentration - the concentration of SO₄²⁻ in solution.

Initial moles of Ba²⁺:

Moles barium acetate (Molar mass: 255.43g/mol)

0.363g * (1mol / 255.43) = 1.421x10⁻³ moles of Ba²⁺

Moles SO₄²⁻ = Moles of ammonium sulfate:

100mL = 0.100L * (0.025mol / L) = 2.5x10⁻³ moles of SO₄²⁻.

As moles of SO₄²⁻ are higher than moles of Ba²⁺, Molarity of Ba²⁺ is 0M because all moles of Ba²⁺ reacts producing BaSO₄(s), an insoluble salt.

5 0

3 years ago

Which option the answer plz

inysia [295]

Hi lovely,

I'd say the answer you're looking for would be A) Such small amounts supply essential trace elements

Because additives are in small amounts the FDA approves it, therefore not many people know what's in their food.

4 0

2 years ago

Read 2 more answers

Calculate the solubility of BaCO3 (a) in pure water and (b) in a solution in which [CO32-] = 0.289 M. Solubility in pure water =

jasenka [17]

Answer:

(a). The solubility of $BaCO_{3}$ in pure water is $4.4\times10^{-5}\ M$