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Eddi Din [679]
3 years ago
10

Can gravity be considered a force? Explain your reasoning

Chemistry
1 answer:
bija089 [108]3 years ago
8 0

Answer:

I think that gravity can be considered a force.

Explanation:

As the object falls, it moves faster and faster. Gravity is considered a universal force because it acts between any two masses anywhere in the universe. For example, there is a gravitational pull between the Sun and the Moon. Even small masses attract one another.

Hope this helped! :)

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What happens to sodium chloride when it dissolves in water
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Image result for What happens to sodium chloride when it dissolves in water

Explanation: On addition to water the Na+ section of NaCl is attracted to the oxygen side of the water molecules, while the Cl- side is attracted to the hydrogens' side of the water molecule. This causes the sodium chloride to split in water, and the NaCl dissolves into separate Na+ and Cl- atoms

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A sulfur containing amino acid is
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Cysteine and methionine contain sulfur.
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What volume of 3.00 MM HClHCl in liters is needed to react completely (with nothing left over) with 0.750 LL of 0.500 MM Na2CO3N
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<u>Answer:</u> The volume of HCl needed is 0.250 L

<u>Explanation:</u>

To calculate the number of moles for given molarity, we use the equation:

\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}

<u>For sodium carbonate:</u>

Molarity of sodium carbonate solution = 0.500 M

Volume of solution = 0.750 L

Putting values in above equation, we get:

0.500M=\frac{\text{Moles of sodium carbonate}}{0.750}\\\\\text{Moles of sodium carbonate}=(0.500mol/L\times 0.750L)=0.375mol

The chemical equation for the reaction of sodium carbonate and HCl follows:

Na_2CO_3+2HCl\rightarrow 2NaCl+H_2CO_3

By Stoichiometry of the reaction:

1 mole of sodium carbonate reacts with 2 moles of HCl

So, 0.375 moles of sodium carbonate will react with = \frac{2}{1}\times 0.375=0.750mol of HCl

Now, calculating the volume of HCl by using equation 1:

Moles of HCl = 0.750 moles

Molarity of HCl = 3.00 M

Putting values in equation 1, we get:

3.00M=\frac{0.750mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.750mol}{3.00mol/L}=0.250L

Hence, the volume of HCl needed is 0.250 L

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Which of the following elements has the lowest first ionization energy?
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Answer:

(Sc)

Explanation:

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A volume of gas at 1.01 atm was measured at 236 mL . What will be the volume if the pressure is
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1.01x236/1.90

=125.4mL

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