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Dafna1 [17]
3 years ago
5

Why are oceans salty

Chemistry
1 answer:
FinnZ [79.3K]3 years ago
4 0

Answer:

Salt in the ocean comes from rocks on land. The rain that falls on the land contains some dissolved carbon dioxide from the surrounding air. ... Together, they make up over 90 percent of all dissolved ions in the ocean. Sodium and Chloride are 'salty.

Explanation:

You might be interested in
A steel tank with a volume of 2.15 L contains N2 gas under a pressure of 8.91 atm at 5.81°C. Calculate the number of moles of N2
Oksana_A [137]

Answer:

The answer to your question is   n = 0.838 moles

Explanation:

Data

Volume = 2.15 l

Pressure = 8.91 atm

Temperature = 5.81°C

moles = ?

Gas constant = 0.082 atm l / mol°K

Process

1.- Convert temperature to °K

Temperature = 5.81 + 273 = 278.81°K

2.- Write the Ideal gas formula

              PV = nRT

-Solve for moles (n)

              n = PV / RT

3.- Substitution

              n = (8.91 x 2.15) / (0.082 x 278.81)

4.- Simplification

               n = 19.16 / 22.86

5.- Result

               n = 0.838 moles

3 0
4 years ago
2. How does a battery produce electricity?
Georgia [21]
A chemical reaction between the metals and the electrolyte frees more electrons in one metal than it does in the other. The metal that frees more electrons develops a positive charge, and the other metal develops a negative charge.
6 0
3 years ago
When heat is applied to 80 grams of CaCO3, it yields 39 grams of CO2. Determine
galben [10]

<u>Answer:</u> The percentage yield of CO_2 is 90.26%.

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

Given mass of CaCO_3 = 80 g

Molar mass of CaCO_3 = 100 g/mol

Plugging values in equation 1:

\text{Moles of }CaCO_3=\frac{80g}{100g/mol}=0.8 mol

For the given chemical equation:

CaCO_3\rightarow CaO+CO_2

By the stoichiometry of the reaction:

If 1 mole of CaCO_3 produces 1 mole of CO_2

So, 0.8 moles of CaCO_3 will produce = \frac{1}{1}\times 0.8=0.8mol of CO_2

Molar mass of CO_2 = 44 g/mol

Plugging values in equation 1:

\text{Mass of }CO_2=(0.8mol\times 44g/mol)=35.2g

The percent yield of a reaction is calculated by using an equation:

\% \text{yield}=\frac{\text{Actual value}}{\text{Theoretical value}}\times 100 ......(2)

Given values:

Actual value of CO_2 = 35.2 g

Theoretical value of H_2CO_3 = 39 g

Plugging values in equation 2:

\% \text{yield of }CO_2=\frac{35.2g}{39g}\times 100\\\\\% \text{yield of }CO_2=90.26\%

Hence, the percentage yield of CO_2 is 90.26%.

8 0
3 years ago
How many moles of copper Atoms are in 4 moles of Cu3(po4)2
Galina-37 [17]
12 moles, there is 3 moles of copper in one mole of Cu3 (PO4)2, there four multiple 3 by 4 and you get 12
6 0
3 years ago
You are well acquainted with the negative effects of the greenhouse effect, but the fact remains that without it, Earth would be
e-lub [12.9K]
Greenhouse effect is the natural phenomenon which makes the Earth's atmosphere favorable for any form of life. As the sun's rays radiates into the atmosphere, some are deflected while some are absorbed. The Earth reflects this back, causing the heat to be trapped. At night, this keeps the Earth warm enough. Without the greenhouse effect, nights would be too cold and days would be too hot that life cannot be sustained.
3 0
4 years ago
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