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fgiga [73]
2 years ago
5

Need help ASAP! How many moles of sodium nitrate are in 0.25 L of 1.2 M NaNO3 solution?

Chemistry
1 answer:
Setler79 [48]2 years ago
3 0

Answer:

\boxed {\boxed {\sf 0.3 \ mol \ NaNO_3}}

Explanation:

Molarity is a measure of concentration in moles per liter.

molarity= \frac{moles \ of \ solute}{liters \ of \ solution}

The molarity of the solution is 1.2 M NaNO₃ or 1.2 moles NaNO₃ per liter. There are 0.25 liters of the solution. The moles of solute are unknown, so we can use x.

  • molarity= 1.2 mol NaNO₃/L
  • liters of solution=0.25 L
  • moles of solute =x

1.2 \ mol \ NaNO_3/L= \frac{x}{0.25 \ L}

We are solving for x, so we must isolate the variable, x. It is being divided by 0.25 liters. The inverse of division is multiplication, so we multiply both sides by 0.25 L.

0.25 \ L *1.2 \ mol \ NaNO_3/L=\frac{x}{0.25 \ L} *0.25 \ L

0.25 \ L *1.2 \ mol \ NaNO_3/L=x

The units of liters cancel, so we are left with the units moles of sodium nitrate.

0.25  *1.2 \ mol \ NaNO_3=x

0.3 \ mol \ NaNO_3=x

There are 0.3 moles of sodium nitrate.

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mixture

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there was leftover components meaning there was something mixed into the liquid

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How many elements are in k2HPO4
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Answer: There are 4 elements which is Potassium (K), Hydrogen (H), Phosphorus (P) and Oxygen (O)
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Which represents the balanced double displacement reaction between Sodium Chloride (Na+Cl-) and Copper Sulfate (Cu2+(SO4)2-) ?
34kurt

Answer:

The balanced double displacement reaction is as follows.

2NaCl+CuSO_{4}\rightarrow Na_{2}SO_{4}+CuCl_{2}

Explanation:

The given reactant has sodium,chloride and copper sulfate ions.

In the double displacement reaction, two ionic compounds exchange their cations.

Sulphate and chloride ions are cations these are exchanged sodium and copper elements.

Hence, the balanced double exchange reaction is as follows.

2NaCl+CuSO_{4}\rightarrow Na_{2}SO_{4}+CuCl_{2}

6 0
3 years ago
a hammer has the volume of 11.5 cubic centimeters. it also has the mass of 500 grams. what is the hammer density​
dsp73

Answer:

<h3>The answer is 43.48 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

From the question

mass = 500 g

volume = 11.5 cm³

We have

density =  \frac{500}{11.5}  \\  = 43.47826086...

We have the final answer as

<h3>43.48 g/cm³</h3>

Hope this helps you

6 0
3 years ago
Calculate [h3o ] of the following polyprotic acid solution: 0. 140 m h3c6h5o7
ankoles [38]

The value of concentration of H₃O⁺ of the polyprotic acid solution 0.140M H₃C₆H₅O₇ is 2.1×10⁻⁴M.

<h3>What is Ka?</h3>

Ka is the acid dissociation constant which shows its value in the equilibrium condition.

Given chemical reaction with ICE table is:

                          H₃C₆H₅O₇   →   C₆H₅O₆⁻   +   H₃O⁺

Initial:                    0.140                 0                  0

Change:                    -x                   +x                 +x

Equilibrium:         0.140-x                x                   x

Ka for the acid = (x)(x) / (0.140-x)

For the H₃C₆H₅O₇ acid value of Ka = 3.2 × 10⁻⁷

We can neglect the value of x from the term 0.140-x, as x is vey small as compared to 0.140 so that equation becomes,

3.2 × 10⁻⁷ = x² / 0.140

x = 2.1×10⁻⁴M

Hence the concentration of H₃O⁺ is 2.1×10⁻⁴M.

To know more about Ka, visit the below link:

brainly.com/question/3006391

#SPJ4

7 0
2 years ago
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