The physical properties of a solution are not affected by the concentration of the components. True False

Answers

Answer 1

Answer: The statement "The physical properties of a solution are not affected by the concentration of the components" is false. Although combining the components will give another physical or chemical property, the property will be still affected by the concentration

Answer 2

Answer:

Answer: The given statement is false.

Explanation:

A property than can be measured and that is sometimes visible in nature is known as physical property.

For example, boiling point, mass, density, volume etc are all physical properties.

So, when we increase concentration of components in a solution then there will be increase in mass and volume of solution. As a result, there will be change in density also occurs as density is mass present in per unit volume.

Hence, we can conclude that the given statement physical properties of a solution are not affected by the concentration of the components, is false.

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Okay! So if 50g of Lithium Bromide is mixed with 100g of water at 20 degrees Celsius a solution forms. If the water was heated to 70 degrees Celsius would the solution form faster, slower, or at the same rate and why?

Will a double replacement reaction occur if a potassium hydroxide solution is mixed with a lead(II) nitrate solution? Briefly explain.

Answers

Explanation:

A chemical reaction equation that contains same number of atoms on both reactant and product side is known as a balanced chemical reaction equation.

And, when positive and negative ions of the two reactant species exchange their position then this type of reaction is known as double replacement reaction.

For example, $KOH + Pb(NO_(3))_(2) \rightarrow KNO_(3) + Pb(OH)_(2)$

Here, number of reactant molecules are as follows.

K = 1

OH = 1

Pb = 1

$NO_(3)$ = 2

Number of product molecules are as follows.

K = 1

OH = 2

Pb = 1

$NO_(3)$ = 1

Hence, to balance this equation multiply KOH by 2 on reactant side and multiply $KNO_(3)$ by 2 on product side.

Therefore, the balanced chemical reaction equation is as follows.

$2KOH + Pb(NO_(3))_(2) \rightarrow 2KNO_(3) + Pb(OH)_(2)$

Since, both positive and negative ions on the reactant side get exchanged. Hence, it is a double replacement reaction.

No - a precipitation will occur though. Potassium nitrate is soluble in water, so the potassium and nitrate ions will remain spectator ions and stay in solution. Lead (II) hydroxide is not soluble, and will precipitate out of solution to form a solid product.

Which polyatomic ion is found in the compound represented by the formula NaHCO3?(1) acetate (3) hydrogen sulfate
(2) hydrogen carbonate (4) oxalate

Answers

Answer: The correct option is 2.

Explanation: Polyatomic ions are defined as the ions in which two or more elements are covalently bonded to act as a single unit. They always carry some charge.

Examples of polyatomic ions are: $OH^-$ known as hydroxide ion, $SO_4^(2-)$ known as sulfate ion

We are given a compound $NaHCO_3$ having 2 ions which are $Na^+$ and $HCO_3^-$ . these ions are named as sodium ions and hydrogen carbonate ions.

Therefore, the correct option is 2.

The correct answer is option 2. Hydrogen carbonate is the polyatomic ion in the compound given. A polyatomic ion is a charged species composed of covalently bonded atoms. Hydrogen carbonate, also known as bicarbonate, is a polyatomic ion with the charge of -1.

Dinitrogen trisulfide symbol

Answers

Dinitrogen trisulfide symbol:N2S3

Final answer:

The symbol for the compound dinitrogen trisulfide is N2S3. It is derived from the number of nitrogen and sulfur atoms present in the compound.

Explanation:

The chemical compound dinitrogen trisulfide is composed of two elements: nitrogen (N) and sulfur (S). When we name the compound according to IUPAC nomenclature rules, we consider the number of each type of atom present. Dinitrogen means there are two nitrogen atoms, represented by the subscript 2, and trisulfide implies that there are three sulfur atoms, signified by the subscript 3. Hence, the symbol or chemical formula for dinitrogen trisulfide is N2S3.

Learn more about Dinitrogen Trisulfide here:

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At what temperature would a gas have a volume of 13.5 L at a pressure of 0.723 atm, if it had a volume of 17.8 L at a pressure of 0.612 atm and a temperature of 28 C

Answers

Answer : The initial temperature of gas would be, 269.7 K

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$(P_1V_1)/(T_1)=(P_2V_2)/(T_2)$

where,

$P_1$ = initial pressure of gas = 0.723 atm

$P_2$ = final pressure of gas = 0.612 atm

$V_1$ = initial volume of gas = 13.5 L

$V_2$ = final volume of gas = 17.8 L

$T_1$ = initial temperature of gas = ?

$T_2$ = final temperature of gas = $28^oC=273+28=301K$

Now put all the given values in the above equation, we get:

$(0.723atm* 13.5L)/(T_1)=(0.612atm* 17.8L)/(301K)$

$T_1=269.7K$

Thus, the initial temperature of gas would be, 269.7 K

What is Very small and located on ER or locatedfloating on its own in the cytoplasm, it is
responsible for making proteins for repair and
growth.

Answers

These are ribosomes definately

If a man has a mass of 83 kilograms on Earth, what will the force of gravity on his body be on the moon? A. 4,880.4 N B. 135.6 N C. 813.4 N D. 318.5 N

Answers

1/6 of the weight on earth or 20 kgs

814.4 N is the answer

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