All categories

4 years ago

PLEASE HELP WILL GIVE BRAINIEST

Chemistry

1 answer:

Ad libitum [116K]4 years ago

4 0

Answer:

The mass of 106.4L of F₂ is 180.48 g

Explanation:

To find the mass of 106.4L of gas you must know the density of it.

Density = mass / volume

Density F₂ = 1,696 kg/m³

Let's make some conversion of units

1m³ = 1000 dm³

1 dm³ = 1L

1.696 kg = 1696 g

So now the rule of three to convert the density

In 1000 dm³ there are 1696 g of mass

In 1 dm³ there are 1.696 g

Density F₂ = 1.696 g/L

Density F₂ = F₂ mass / F₂ volume

1.696 g/L = F₂ mass / 106.4 L

1.696 g/L . 106.4L = F₂ mass

You might be interested in

When 70.4 g of benzamide (C7H7NO) are dissolved in 850. g of a certain mystery liquid X, the freezing point of the solution is 2

Arlecino [84]

Answer:

1.62

Explanation:

From the given information:

number of moles of benzamide $=\dfrac{70.4 \ g}{121.14 \ g/mol}$

= 0.58 mole

The molality = $\dfrac{mass \ of \ solute (i.e. \ benzamide )}{mass \ of \ solvent }$

$= \dfrac{0.58 }{0.85 }$

= 0.6837

Using the formula:

$\mathbf {dT = l \times k_f \times m}$

where;

dT = freezing point = 27

l = Van't Hoff factor = 1

kf = freezing constant of the solvent

∴

2.7 °C = 1 × kf × 0.6837 m

kf = 2.7 °C/ 0.6837m

kf = 3.949 °C/m

number of moles of NH4Cl = $\dfrac{70.4 \ g}{53.491 \ g /mol}$

= 1.316 mol

The molality = $\dfrac{1.316 \ mol}{0.85 \ kg}$

= 1.5484

Thus;

the above kf value is used in determining the Van't Hoff factor for NH4Cl

i.e.

9.9 = l × 3.949 × 1.5484 m

$l = \dfrac{9.9}{3.949 \times 1.5484 \ m}$

l = 1.62

5 0

3 years ago

Explain in a short sentence how you can tell if a reaction is a double replacement<br> reaction.

Monica [59]

Explanation:

In a double displacement reaction, there is an actual exchange of partners to form new compounds.

The reaction is given as shown below:

AB + CD → AD + CB

One of the following conditions serves as the driving force for a double replacement reaction:

Formation of an insoluble compound or precipitate
Formation of water or any other non-ionizing compound
Liberation of a gaseous product.

4 0

3 years ago

In normal conditions, warm water "piles up" in the Western Pacific Ocean.<br><br> True<br> False

kakasveta [241]

In normal conditions, warm water does "pile up" in the" Western Pacific Ocean.

8 0

3 years ago

Hurry please!

Pani-rosa [81]

Answer : The mass of of water present in the jar is, 298.79 g

Solution : Given,

Mass of barium nitrate = 27 g

The solubility of barium nitrate at $20^oC$ is 9.02 gram per 100 ml of water.

As, 9.02 gram of barium nitrate present in 100 ml of water

So, 27 gram of barium nitrate present in $\frac{27g}{9.02g}\times 100ml=299.33ml$ of water

The volume of water is 299.33 ml.

As we know that the density of water at $20^oC$ is 0.9982 g/ml

Now we have to calculate the mass of water.

$\text{Mass of water}=\text{Density of water}\times \text{Volume of water}$

$\text{Mass of water}=(0.9982g/ml)\times (299.33ml)=298.79g$

Therefore, the mass of of water present in the jar is, 298.79 g

5 0

3 years ago

Thermal expansion happens when

Leokris [45]

Answer:

The coefficient of thermal expansion describes how the size of an object changes with a change in temperature. ... In general, substances expand or contract when their temperature changes, with expansion or contraction occurring in all directions.

6 0

3 years ago

Read 2 more answers