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3 years ago

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Calculate the molarity of a solution prepared by dissolving 11.9 g of beryllium chloride in a total volume of 292.2 mL of soluti

on.

1 answer:

anyanavicka [17]3 years ago

8 0

Answer:

8793

Explanation:

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** ANSWER FAST I WILL MARK YOU BRAINLIEST AND GIVE 20 POINTS * * THIS IS A CHEMISTRY QUESTION SO PLEASE ONLY ANSWER IF YOU ARE G

Anna11 [10]

Answer:

$\boxed{\text{ B. Increase the temperature and decrease the pressure.}}$

Explanation:

Let's say the reaction is

R ⇌ 2P; endothermic

I like to consider heat as if it were a reactant or a product in a chemical equilibrium.

Another way to write the equilibrium would be

heat + R ⇌ 2P

According to Le Châtelier's Principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

Let's consider each of the stresses in turn.

(i) Changing the temperature

If you want to increase the amount of product, you increase the temperature. The system will try to get rid of the added heat by shifting to the right, thus forming more product.

(ii) Changing the pressure

If R and P are liquids or solids or in aqueous solution, changing the pressure will have no effect. Something must be in the gas phase for a change in pressure to affect the position of equilibrium.

If P is a gas, the equilibrium is

heat + R ⇌ 2P(g)

Then, decreasing the pressure will produce more P. If you reduce the pressure, the system will respond by shifting to the right (the side with more gas molecules) to produce more P and bring the pressure back up

5 0

4 years ago

An equimolar mixture of two optical isomers is called a ________. An equimolar mixture of two optical isomers is called a ______

Vika [28.1K]

Two optical isomers can form:

An equimolar mixture of two optical isomers is called a racemic mixture.

What is a Racemic mixture?

An equimolar mixture of two enantiomers that is optically inactive is known as a racemic mixture (or racemate) (i.e. does not rotate plane-polarized light).

The racemic mixture can be created by:

Combining enantiomers in equal amounts, or (more frequently)
Reactions that create one or more new chiral centers without the influence of chirality (i.e. chiral reagent, catalyst, etc.)

The light that is plane-polarized does not spin in an optically inactive mixture.

Since each enantiomer rotates plane-polarized light to an equal and opposite extent, an equimolar mixture of two enantiomers will typically result in a racemic mixture. There won't be any net rotation if they are both present in equal proportions.

Learn more about racemic mixture here,

brainly.com/question/27835707

#SPJ4

4 0

2 years ago

What characteristic is most likely to narrow down soil sample matches?

ElenaW [278]

Answer:

presence of vegetation or animal material

6 0

3 years ago

An unfortunate squirrel is hit by a car. A small bit of gas originally 0.005 L in volume is trapped in the squirrel's body at a

kykrilka [37]

Answer: The volume of the gas in the squirrel now is 0.00532 L

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

where,

$V_1\text{ and }T_1$ are the initial volume and temperature of the gas.

$V_2\text{ and }T_2$ are the final volume and temperature of the gas.

We are given:

$V_1=0.005L\\T_1=308K\\V_2=?\\T_2=328K$

Putting values in above equation, we get:

$\frac{0.005}{308}=\frac{V_2}{328}\\\\V_2=0.0053L$

Thus the volume of the gas in the squirrel now is 0.00532 L

3 0

3 years ago

What is the total number of grams of potassium fluoride

Mice21 [21]

Explanation:

molarity=no. of moles of solute/solution in litres

6.17M=no. of moles of solute/9.4 L

6.17×9.4=no. of moles of solute

57.9 =no. of moles of potassium fluoride KF

no. of moles=given mass /molar mass

57.9=given mass/58

3358.2 g

8 0

3 years ago