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Anastasy [175]
2 years ago
6

Which of the following can explain the daily change in sea level observed along a coast?

Chemistry
1 answer:
salantis [7]2 years ago
5 0
The answer for the question above is A. the gravitational pull of the moon on the water near the coast. The sun and and the moon are responsible for the rising and falling of the ocean tides. The gravitational pull of the moon and the sun makes the water in the oceans bulge, causing a continuous change between high and low tide. 
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A solution of NaCl ( aq ) is added slowly to a solution of lead nitrate, Pb ( NO 3 ) 2 ( aq ) , until no further precipitation o
dezoksy [38]

Answer:

0.218 M of Pb(NO3)2

Explanation:

Equation of the reaction

Pb(NO3)2(aq) + 2NaCl(aq) --> PbCl2(s) + 2NaNO3(aq)

1 mole of Pb(NO3)2 reacts to precipitate 1 mole of PbCl2

Molar mass of PbCl2 = 207 + (35.5*2)

= 278 g/mol

Number of moles of PbCl2 precipitated = mass/molar mass

= 12.11/278

= 0.04356 mol

Since 0.04356 moles of PbCl2 was precipitated, therefore by stoichiometry; 0.04356 moles of Pb(NO3)2 reacted.

Molarity is defined as the number of moles of solute in 1 liter of solution.

Molarity = number of moles/volumes

= 0.04356/0.2

= 0.218 M

6 0
3 years ago
List the difference between 3 allotropes of carbon
Blababa [14]

Answer:

Diamond, graphite and fullerness

Explanation:

Diamond is clear and transparent but graphite is black and opaque

4 0
3 years ago
The molecular weight of table salt, NaCl, is 58.5 g/mol. A tablespoon of salt weighs 6.37 grams. Calculate the number of moles o
finlep [7]

Answer:

0.109 mol/tablespoon

Explanation:

6.37 g/ 58.5 mol = 0.10888888 mol (0.109 significantly)

3 0
2 years ago
In an endothermic reaction which bonds are stronger? The reactants or products? Explain
Marina86 [1]

reactants because it had other chemicals, when more are mixed it will be more stronger.

It is the correct answer

6 0
2 years ago
A solar panel combines multiple photovoltaic cells. Which type of energy is used to power a solar panel?
hoa [83]
A photovoltaic cell is a material that has the ability to convert light into electricity. Many photovoltaic cells are usually combined in order to make a solar panel that can help to power homes. Since light is an electromagnetic wave that can propagate though space and air, it is electromagnetic energy that is used to power a solar cell. 
3 0
2 years ago
Read 2 more answers
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