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TEA [102]
3 years ago
15

A lake in rural maine drops in ph from 7 to 5 as a result of acid rain falling into it. how has the h+ ion concentration change

as a result of the acid rain
Chemistry
1 answer:
Jlenok [28]3 years ago
3 0
The H+ concentration in the lake has increased as a result of the acid rain.
The original pH of the lake was 7, which mean the water is neutral, but due to the acid rain, it drops to 5. This means, that the water has become acidic and how have more hydrogen ion. The H+ concentration in the lake has 100 times compares with its original pH.
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a galvanic cell zn | zn²⁺ || ni²⁺ | ni runs spontaneously. if a current is imposed to turn this into an electrolytic cell, which
hodyreva [135]

Answer:

Zn²⁺ gets reduced

Explanation:

An electrolytic cell runs in the opposite direction of a galvanic cell. Applying a current to the galvanic cell Zn | Zn²⁺ || Ni²⁺ | Ni would convert the Zn anode to a cathode and cause Zn²⁺ to be reduced.

8 0
3 years ago
Help me please i need the answer now<br>(nonsense report)​
rusak2 [61]

Answer:

Quantitative

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Qualitative

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Explanation :

Quantitative Data

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Qualitative Data

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3 0
3 years ago
What mass of K2CO3 is needed to prepare 200. mL of a solution having a potassium ion concentration of 0.150 M
I am Lyosha [343]

<u>Answer:</u>

2.07 grams

<u>Explanation:</u>

We know that the molecular mass of K_2CO_3 is 138.205 grams.

In order to find out how many grams we need to make 200 mL having a potassium ion concentration of 0.150, we need to find the number of moles first.

M = moles / liters

0.150 = x / 0.200

x = 0.03 moles

Since there are 2 potassium atoms in each molecule of K_2CO_3 so we will divide this number by half and multiply it by the molecular mass.

0.03/2 = 0.015 moles

Mass of K_2CO_3 needed = 0.015 × 138.205 = 2.07 grams

4 0
3 years ago
HELP PLEASEEE <br>it's for an exam on monday​
zhannawk [14.2K]

From the stoichiometry of the reaction, we can see that the volume of carbon monoxide reacted is 44.8 L.

<h3>What is stoichiometry?</h3>

Stoichiometry is used to obtain the amount of substance reacted or the amount of product formed.

Number of moles of CO2 in 88g = 88g/4 g/mol = 2 moles

Molar mass of carbon monoxide = 12 + 16 = 28g/mol

We can see that 1 mole of oxygen was used in the reaction hence the mass of oxygen used is 32 g/mol. Given the stoichiometry of the reaction, 28g of carbon monoxide was burned.

If 1 mole of a gas occupies 22.4 L

2 moles of a gas occupies 2 moles  * 22.4 L/1 mole

= 44.8 L

Learn more about stoichiometry:brainly.com/question/9743981

#SPJ1

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2 years ago
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