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2 years ago

. A base increases the OH- ion concentration of water.. True. False

2 answers:

8 0

It is a completely true statement that a <span>base increases the OH- ion concentration of water. The correct option among the two options that are given in the question is the first option. I hope that this is the answer that you were looking for and the answer has actually come to your desired help.</span>

FrozenT [24]2 years ago

3 0

Answer : The given statement is true.

Explanation :

Ionic product of water : It is defined as the product of the concentration of hydrogen ion and the concentration of hydroxide ion.

When the concentration of hydrogen ion and hydroxide ion are equal in the solution then the solution is neutral.

When the concentration of hydrogen ion are more in the solution then the solution is acidic in nature.

When the concentration of hydroxide ion are more in solution then the solution is basic in nature.

As per question, the addition of a base in the solution increases the concentration of hydroxide ion and decreases the concentration of hydrogen ion.

Hence, the given statement is true.

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If 11.9 kJ are used to heat a sample of water the temperature increases from 20.0°C to

Kipish [7]

Answer:

$m=4.51g$

Explanation:

Hello!

In this case, since the energy involved during a heating process is shown below:

$Q=mCp\Delta T$

Whereas the specific heat of water is 4.184 J/(g°C), we can compute the heated mass of water by the addition of 11.9 kJ (11900 J) of heat as shown below:

$m=\frac{Q}{Cp\Delta T}$

Thus, by plugging in, we obtain:

$m=\frac{11900J}{4.184\frac{J}{g\°C}(650\°C-20.0\°C)}\\\\m=4.51g$

Best regards!

7 0

2 years ago

When methane is burned with oxygen, the products are carbon dioxide and water. if you produce 9 grams of water and 11 grams of c

Alina [70]

4 grams of methane is <span>burned with oxygen,. Hope this helped</span>

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3 years ago

Two chemical reactions are shown. Which statements is true?

Marizza181 [45]

Answer:

The answer is b

Explanation:

they both are decomposition

7 0

3 years ago

Hydrofluoric acid, hf(aq), cannot be stored in glass bottles because compounds called silicates in the glass are attacked by the

Trava [24]

1) Chemical equation

Na2 SiO3 (s) + 8 HF (aq) ---> H2 Si F6 (aq) + 2 Na F (aq) + 3H2O (l)

It is balanced

2) Molar ratios

1 mol Na2 SiO3 : 8 mol HF.

3) Proportion

0.340 mol Na2 SiO3 * 8 mol HF / 1mol Na2SiO3 = 2.72 mol HF.

Answer: 2.72 mol HF

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3 years ago

How are protons and neutrons different from and similar to each other?

eimsori [14]

Answer: similar: Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams. Different:Protons are a type of subatomic particle with a positive charge. And Neutrons are a type of subatomic particle with no charge (they're neutral).

Explanation:

hope that helped

8 0

3 years ago

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