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2 years ago

How to Convert 2.50mol of LiBr to g

Chemistry

1 answer:

julia-pushkina [17]2 years ago

6 0

Answer:

240.5g

Explanation:

steps:

given/ 1 - 2.5mol LiBr / 1

Multiplication - 78g/ 1 mol ( 78 comes from the formula weight of LiBr )

answer- 240.5g

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93.2 mL of a 2.03 M potassium fluoride (KF) solution

Marrrta [24]

Answer:

1.98 M

Explanation:

Given data

Initial volume (V₁): 93.2 mL

Initial concentration (C₁): 2.03 M

Volume of water added: 3.92 L

Step 1: Convert V₁ to liters

We will use the relationship 1 L = 1000 mL.

$93.2mL \times \frac{1L}{1000mL} = 0.0932 L$

Step 2: Calculate the final volume (V₂)

The final volume is the sum of the initial volume and the volume of water.

$V_2 = 0.0932L + 3.92 L = 4.01L$

Step 3: Calculate the final concentration (C₂)

We will use the dilution rule.

$C_1 \times V_1 = C_2 \times V_2\\C_2 = \frac{C_1 \times V_1}{V_2} = \frac{2.03 M \times 3.92L}{4.01L} = 1.98 M$

3 0

2 years ago

Read 2 more answers

How many chloride ions are in 0.486 moles of chloride ions?

svetlana [45]

Answer:

Since in a chloride ion, we have an additional electron

you might think that it will affect the mass but the mass of an electron is almost negligible so we will ignore that

Amount of ions in 1 mol = 6.022 * 10^23

Amount of ions in 0.486 moles = 0.486 * (6.022*10^23)

Amunt of ions in 0.486 moles = 2.9 * 10^23 ions

Hence, option 1 is correct

6 0

2 years ago

1) Which statement describes the relationship between thermal energy and particle movement?

tresset_1 [31]

Explanation:

1. c

2. b

3. b

4. d

5. c

6. b

7.c

8. c

9. d

10. c

11.Liquid water changes to water vapor when it evaporates or boils. The gas inside the bubbles of boiling water is water vapor. Water vapor can change back into liquid water when it cools down. ... The “steam” you see is really tiny drops of liquid water that form when the water vapor cools.

12.Plastic pollution has become one of the most pressing environmental issues, as rapidly increasing production of disposable plastic products overwhelms the world’s ability to deal with them. Plastic pollution is most visible in developing Asian and African nations, where garbage collection systems are often inefficient or nonexistent. But the developed world, especially in countries with low recycling rates, also has trouble properly collecting discarded plastics. Plastic trash has become so ubiquitous it has prompted efforts to write a global treaty negotiated by the United Nations

4 0

2 years ago

A sample of SO3 is introduced into an evacuated sealed container and heated to 600 K. The following equilibrium is established:

Andreas93 [3]

Answer: The value of $K_p$ is 0.050.

Explanation:

According to Raoult's law, the vapor pressure of a component at a given temperature is equal to the mole fraction of that component multiplied by the vapor pressure of that component in the pure state.

$p_x=x\times P$

As we know the mole fraction of $O_2$ is 0.12

The partial pressure of $O_2=0.12\times 3.0atm=0.36atm$

The partial pressure of $SO_2=2\times 0.36atm=0.72atm$ Thus the partial pressure of $SO_3$ is = [3 - (0.36+0.720)] atm = 1.92 atm

$p_{SO3}$ = 1.92 atm

$2SO_3(g)\rightleftharpoons 2SO_2(g)+O_2(g)$

$K_p=\frac{p_{O_2}\times (p_{SO_}2)^2}{(p_{SO_3})^2}$

$K_p=\frac{0.36\times (0.72)^2}{(1.92)^2}$

$K_p=0.050$

The value of $K_p$ is 0.050.

7 0

2 years ago

A teacher makes the following statement. "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed

Natali5045456 [20]

Answer: The most likely topic the teacher is taking about is distillation of a mixture

Explanation:

The correct question is:

Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C,"

What topic is the teacher most likely talking about?

a. distillation of a mixture

b. filtration of a pure substance

c.evaporation of a mixture

d. sorting of a pure substance

Explanation:

Distillation is the process of separating components of a mixture based on different boiling points.

To separate a mixture of liquids, the liquid can be heated to force components, which have different boiling points, into the gas phase. The gas is then condensed back into liquid form and collected.

Types of distillation include simple distillation and fractional distillation(different volatile 'fractions' are collected as they are produced). Simple distillation may be used when the boiling points of two liquids are significantly different from each other or to separate liquids from solids or nonvolatile components. Fractional distillation is used when the boiling points of the components of a mixture are close to each other.

From the question, it's the components of petroleum that are being separated, which can be carried out using fractional distillation.

The first component that is collected is

Gasoline which boils at a relatively low temperature (about 150°C), followed by

kerosene which is removed at around 200°C, followed by diesel oil at 300°C and then fuel oil at around 370°C.

3 0

2 years ago