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3 years ago

What increases the concentration of H+ in water ?

Chemistry

2 answers:

Tanzania [10]3 years ago

7 0

Answer:

Acid

Explanation:

Sergio [31]3 years ago

4 0

Acid
Non-neutral pH readings result from dissolving acids or bases in water. An acid is a substance that increases the concentration of hydrogen ions (H+) in a solution, usually by having one of its hydrogen atoms dissociate.

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Calculate ΔSrxn∘ for the reaction

Yanka [14]

The entropy of the reaction can be calculated alike the enthalpy of the reaction which is equal to the difference between the summation of entropies of the products multiplied by their corresponding stoich coeff. and the summation of the entropies of the reactants multiplied by their corresponding stoich coeff. In this case, the answer is -146.8 J / mol K

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4 years ago

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True or False? The nucleus if found inside chromosomes.<br> True<br> False

MakcuM [25]

Answer:

False, the nucleus is not <em>inside</em> the chromosomes, but the chromosomes are inside the nucleus.

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2 years ago

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A student is adding DI water to a volumetric flask to make a 50% solution. Unfortunately, he was not paying attention and filled

dalvyx [7]

Answer:

His results will be skewed because there was more water than stock solution. Which would cause the percentage solution to be less than 50% therefore the density would be less than the actual value.

Explanation:

The solution will have percentage less than that of 50%. Therefore the density would be less than the actual value.

Suppose there should be 50 mL of the solution, and he added 60 mL. So 10 mL of the solution is added more.

Suppose the mass of the solute is m.

Originally, the density is = $\frac{m}{50}$ $\left(\frac{\text{mass}}{\text{volume}}\right)$

Now after adding extra 10 mL , the density becomes $\frac{m}{60}$ .

Therefore, $\frac{m}{50}>\frac{m}{60}$

So the density decreases when we add more solution.

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3 years ago

When writing equations the mass on the left of the arrow must

sp2606 [1]

Answer:

When writing equation the mass on left side of equation must be equal to the mass on right side. True

Explanation:

The chemical reactions always follow the law of conservation of mass.

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass because total mass is equal on both side of equation.

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4 years ago

Decide whether a chemical reaction happens in either of the following situations. If a reaction does happen, write the chemical

Natalija [7]

Answer :

Part 1 : Yes, this reaction will take place.

Part 2 : No, this reaction will not take place.

Explanation:

Single replacement reaction : A chemical reaction in which the more reactive element replace the less reactive element.

It is represented as,

$A+BC\rightarrow AC+B$

In this reaction, A is more reactive element and B is less reactive element.

Reactivity series : It is used to determine the products of the single displacement reactions. As we know that in a single displacement reaction, the most reactive metal displaces the least reactive metal.

Part A :

This reaction will takes place because iron metal is more reactive metal than copper metal. So, iron metal can displaces copper metal from its solution.

The chemical reaction will be:

$Fe(s)+Cu(NO_3)_2(aq)\rightarrow Fe(NO_3)_2(aq)+Cu(s)$

Part B :

This reaction will not takes place because copper metal is less reactive metal than iron metal. So, copper metal can displaces iron metal from its solution.

The chemical reaction will be:

$Fe(s)+Cu(NO_3)_2(aq)\rightarrow \text{No reaction}$

5 0

4 years ago