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2 years ago

Table sugar completely dissolved in water is an example of a?

Chemistry

2 answers:

mamaluj [8]2 years ago

7 0

Explanation:

A homogeneous solution is defined as the solution in which solute particles are evenly distributed into the solvent.

For example, table sugar when dissolves in water then a clear solution is obtained which is also a homogeneous solution.

On the other hand, a heterogeneous solution is defined as the solution in which solute particles are unevenly distributed into the solvent.

For example, mud particles present in water is a heterogeneous solution.

Thus, we can conclude that table sugar completely dissolved in water is an example of a homogeneous solution.

olga_2 [115]2 years ago

5 0

Solution because a solution cannot be separated by hand

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The atomic mass of seven atoms of antimony is ?

son4ous [18]

Answer:

Percent composition by element

Element Symbol Atomic Mass

Antimony Sb 121.760

Explanation:

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2 years ago

If you heat your melting point tube too quickly, what will your observed melting point be in comparison to the actual melting po

solniwko [45]

Explanation:

When conducting a melting point experiment, if we were to heat a sample quickly. Large amount heat is provided instantly which would melt the crystals in the tube very quickly, even before the temperature of the thermometer reaches to that level. So the observes melting point would be much lower than the actual melting point when sample is heated slowly.

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2 years ago

7. Balance the following reaction under basic conditions: Al (s) + Cr2O72- (aq) -> Al3+ (aq) + Cr3+ (aq)

MArishka [77]

The free energy change of the reaction; Fe (s) + Au3+ (aq) -> Fe3+ (aq) + Au (s) is calculated to be -443.83KJ/mol.

For the reaction shown in question 7, we can divide it into half equations as follows;

Oxidation half equation;

6 Al (s) -------> 6Al^3+(aq) + 18e

Reduction half equation;

3Cr2O7^2-(aq) + 42H^+(aq) + 18e -----> 6Cr^3+(aq) + 21H2O(l)

The balanced reaction equation is;

6Al(s) + 3Cr2O7^2-(aq) + 42H^+(aq) -----> 6Al^3+(aq) + 6Cr^3+(aq) + 21H2O(l)

The E° of this reaction is obtained from;

E° anode = -0.04 V

E°cathode = +1.50 V

E° cell = +1.50 V - (-0.04 V) = 1.54 V

Given that;

ΔG° = -nFE°cell

n = 3, F = 96500, E°cell = 1.54 V

ΔG° = -(3 × 96500 × 1.54)

ΔG° = -443.83KJ/mol

Learn more: brainly.com/question/967776

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2 years ago

Choose the correct answer. The difference between the mass number of an isotope and its atomic number is (a) directly related to

kicyunya [14]

Answer : The correct answer is, (c) the number of neutrons

Explanation :

Isotope : It is defined as the element that have the same number of protons but have the different number of neutrons of each of the atom.

Atomic number is defined as the number of protons or number of electrons.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and number of neutrons.

Number of neutrons = Mass number - Atomic number

For example : For Carbon - 13 isotope.

Mass number = 13

Atomic number = 6

Number of neutrons = Mass number - Atomic number

Number of neutrons = 13 - 6 = 7

Hence, the difference between the mass number of an isotope and its atomic number is the number of neutrons.

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Alex777 [14]

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