Ask question

Ask question

All categories

4 years ago

13

If 0.97 moles of BaCl2 are dissolved in enough water to make a 1.2 liter soulution, what is the resulting molarity

1 answer:

Akimi4 [234]4 years ago

5 0

If 1.2 L of solution contains 0.97 mol
then let 1 L of solution contain x mol

⇒ (1.2 L) x = (0.97 mol) (1 L)

x = (0.97 mol · L) ÷ (1.2 L)

x = 0.8083 mol

Thus the molarity of the Barium Chloride solution is 0.808 mol / L OR 0.808 mol/dm³.

You might be interested in

Which substance will most likely ionize when it is dissolved in water?

viva [34]

You didn't give an answer choice there, but I believe the answer is Hydrobromic Acid. Strong Acids are considered to ionize.

6 0

3 years ago

Read 2 more answers

People ask me if you could pick any song that described you from a boys POV what would it be??? i always say "she's country by j

lions [1.4K]

Lovely song just asking is there a question so I don't get hate for not knowing rather there's a question or not

7 0

3 years ago

If a boron atom has 5 protons and 6 neutrons then how many electrons does it have?

3241004551 [841]

Answer:

5 elections

because no. of electrons =no.of proton= atomic number.

8 0

3 years ago

Read 2 more answers

Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate t

Alina [70]

<u>Answer:</u> The mass of gallium produced by the electrolysis is 0.0354 grams.

<u>Explanation:</u>

The equation for the deposition of Ga(s) from Ga(III) solution follows:

$Ga^{3+}(aq.)+3e^-\rightarrow Ga(s)$

To calculate the total charge, we use the equation:

$C=I\times t$

where,

C = charge

I = current = 0.490 A

t = time required (in seconds) = $50\times 60=300s$ (Conversion factor: 1 min = 60 s)

Putting values in above equation, we get:

$C=0.490\times 300=147C$

To calculate the moles of electrons, we use the equation:

$\text{Moles of electrons}=\frac{C}{F}$

where,

C = charge = 147 C

F = Faradays constant = 96500

$\text{Moles of electrons}=\frac{147}{96500}=1.52\times 10^{-3}mol$

Now, to calculate the moles of gallium, we use the equation:

$\text{Moles of Gallium}=\frac{\text{Moles of electrons}}{n}$

where,

n = number of electrons transferred = 3

Putting values in above equation, we get:

$\text{Moles of Gallium}=\frac{1.52\times 10^{-3}}{3}=5.077\times 10^{-4}mol$

To calculate the mass of gallium, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of Gallium = $5.077\times 10^{-4}mol$

Molar mass of Gallium = 69.72 g/mol

Putting values in above equation, we get:

$5.077\times 10^{-4}mol=\frac{\text{Mass of Gallium}}{69.72g/mol}\\\\\text{Mass of Gallium}=0.0354g$

Hence, the mass of gallium produced by the electrolysis is 0.0354 grams.

8 0

3 years ago

In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol).Calculate the number of moles of chlo

sveticcg [70]

1 mole = 70.9
X mole = 140
X=1.9746 moles
X= 1.98 when rounded to 3 significant figures.

4 0

3 years ago

Read 2 more answers