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1.00 mL of a 3.55 × 10–4 M solution of oleic acid is diluted with 9.00 mL of petroleum ether, forming solution A. Then 2.00 mL o

Leto [7]

Answer:

Concentration of solution B is $7.10\times 10^{-6}M$

Explanation:

Solution A: Total volume of solution A = (9.00+1.00) mL = 10.00 mL

According to law of dilution, $C_{1}V_{1}=C_{2}V_{2}$

where $C_{1}$ and $C_{2}$ are initial and final concentration respectively. $V_{1}$ and $V_{2}$ are initial and final volume respectively.

Here $C_{1}$ = $3.55\times 10^{-4}M$ , $V_{1}$ = 1.00 mL, $V_{2}$ = 10.00 mL

So, $C_{2}=\frac{C_{1}V_{1}}{V_{2}}$ = $\frac{3.55\times 10^{-4}M\times 1.00mL}{10.00mL}=3.55\times 10^{-5}M$

So, concentration of solution A = $3.55\times 10^{-5}M$

Solution B: Total volume of solution B = (2.00+8.00) mL = 10.00 mL

Similarly as above, $C_{2}=\frac{C_{1}V_{1}}{V_{2}}$ = $\frac{3.55\times 10^{-5}M\times 2.00mL}{10.00mL}=7.10\times 10^{-6}M$

So, concentration of solution B = $7.10\times 10^{-6}M$

7 0

4 years ago

A chemist determines by measurements that 0.0800 moles of bromine liquid participate in a chemical reaction. Calculate the mass

guajiro [1.7K]

Answer:

The mass of bromine liquid that participates in a chemical reaction=12.8 g

Explanation:

We are given that

Total number of moles of bromine liquid participate in chemical reaction=0.0800 moles

We have to find the mass of bromine liquid that participates.

Atomic mass of Br=79.9 g

1 mole of bromine liquid=2 atomic mass of bromine (Br)

1 mole of bromine liquid ( $Br_2$ ) = $2\times 79.9=159.8 g$

0.0800 moles of bromine liquid= $159.8\times 0.0800$ g

0.0800 moles of bromine liquid=12.784 g

0.0800 moles of bromine liquid $\approx 12.8$ g

Hence, the mass of bromine liquid that participates in a chemical reaction=12.8 g

8 0

3 years ago

Why is the ring around saturn

lawyer [7]

Answer:

Saturn's rings are made up of ice, dust, rocks, moons and other satellite that orbit the gas giant as its equator, where gravity is strongest.

Explanation:

6 0

3 years ago

A rigid, sealed container that can hold 26 L of gas is filled to a pressure of

____ [38]

Answer:

121 °C

Explanation:

From the question given above, the following data were obtained:

Initial pressure (P₁) = 5.97 atm

Initial temperature (T₁) = 374 °C

Final pressure (P₂) = 3.64 atm

Final temperature (T₂) =?

NOTE: Volume = constant

Next, we shall convert 374 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 374 °C

Initial temperature (T₁) = 374 °C + 273

Initial temperature (T₁) = 647 K

Next, we shall determine the final temperature. This can be obtained as follow:

Initial pressure (P₁) = 5.97 atm

Initial temperature (T₁) = 647 K

Final pressure (P₂) = 3.64 atm

Final temperature (T₂) =?

P₁ / T₁ = P₂ / T₂

5.97 / 647 = 3.64 / T₂

Cross multiply

5.97 × T₂ = 647 × 3.64

5.97 × T₂ = 2355.08

Divide both side by 5.97

T₂ = 2355.08 / 5.97

T₂ = 394 K

Finally, we shall convert 394 K to celsius temperature. This can be obtained as follow:

T(°C) = T(K) – 273

Final temperature (T₂) = 394 K

Final temperature (T₂) = 394 – 273

Final temperature (T₂) = 121 °C

Thus, the new temperature is 121 °C

6 0

3 years ago

about the lung with balloons what respiratory organ do the small balloons represents? the big balloons?

butalik [34]

Answer:

The plastic bottle represents the chest cavity, the straws act as the bronchi, the small balloons inside the plastic bottle serves as the lungs and the big balloon at the bottom of the plastic bottle is the diaphragm.

Explanation:

7 0

3 years ago