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3 years ago

Describe the preparationof 2.00h of o.108m Bachfrom Bad. 28 (244-3 g/mal)

1 answer:

8 0

The question is incomplete, the complete question is; Describe the preparation of 2.00 L of 0.108 M BaCl2 from BaCl2.2H2O

Answer:

See explanation

Explanation:

First we must know the molar mass of the compound = 244.3 g/mol

Now we must calculate the number of moles of BaCl2.2H2O in the solution.

number of moles = concentration * volume = 0.108 M * 2.00 L = 0.216 moles

Now the mass of solid that we need to take can be obtained from;

number of moles = mass/molar mass

mass = number of moles * molar mass

mass = 0.216 moles * 244.3 g/mol

Mass = 52.8 g

Hence, we must weigh 52.8 g of BaCl2.2H2O accurately in a balance and dissolve it in 2 L of water to give 0.108 M solution of BaCl2.2H2O.

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1.00 x 10-7 moles to grams

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2537 Hope this helped

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3 years ago

Three blocks of the same mass are placed in front of you. Block A has a volume of

Ivan

Given :

Three block of same mass name A , B and C .

Sides of block A , B and C is 3.0 cm , 5.0 cm and 10.0 cm .

To Find :

Which block has the higher density .

Solution :

We know , density $\rho$ is given by :

$\rho=\dfrac{M}{V}$ ......1 )

Here , V is volume .

Now , volume V for cube is given :

$V=a^3$ .......2 )

( Here , a is the side of cube )

Now ,form equation 1 we can see if mass remains constant then density decrease with increase in volume.

Therefore , cube with minimum side will have higher density , in this case it is 3 cm block .

Hence , this is the required solution .

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3 years ago

A molar solution is a solution that contains one mole of solute in

BartSMP [9]

Answer:

1 liter of the solution

Explanation:

Molarity or concentration of a solution refers to the number of moles of solute contained in a volume of 1 liter or 1 dm³ solution.
Therefore, the concentration of a solution is calculated by dividing the number of moles of a solute by the volume of the solution.
Concentration is given in mol/L or mol/dm³.
Hence, a molar solution is a solution that contains 1 mole of a solute in 1 liter of the solution. This is equivalent to 1M or 1 mol/L.

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3 years ago

Answer the following question:

zhenek [66]

poste en français s’il vous plaît

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4 years ago

Read 2 more answers

Calculate the number of atoms in exactly 3.5 moles of naturally occurring calcium.

trapecia [35]

2.11x10^24 Ca atoms

In order to find the amount of atoms we must use Avogadro’s number, 6.022 x 10^23

Since we have moles, 3.5 the equation would look like this

3.5 moles Ca x 6.022x10^23/1 = 2.1077 x 10^24, which we round to 2.11 x 10^24 atoms of Ca

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2 years ago

Describe the preparationof 2.00h of o.108m Bachfrom Bad. 28 (244-3 g/mal)​

Describe the preparationof 2.00h of o.108m Bachfrom Bad. 28 (244-3 g/mal)