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zhenek [66]
3 years ago
13

Classify the outcomes based on whether they are caused by adding or removing a reactant from a chemical reaction. The rate of th

e forward reaction increases. The rate of the reverse reaction increases. The concentration of products increases. The concentration of products decreases.
Chemistry
1 answer:
Mama L [17]3 years ago
3 0

Explanation: To study the outcomes, we will apply Le-Chatelier's principle.

Le-Chatelier's principle states that if there is any disturbance in the conditions of the dynamic equilibrium, the position of equilibrium will counteract the change.

1) The rate of the forward reaction increases.

This will happen when we add the reactant to a chemical reaction. According to Le-Chatelier's principle, by increasing the reactant, the equilibrium will shift in the direction where this effect is minimal. Hence, forward reaction is favored.

2) The rate of the revere reaction increases.

This will happen when we remove the reactant from a chemical reaction. According to Le-Chatelier's principle, by removing the reactant, the equilibrium will shift in the direction where this effect is minimal. Hence, reverse reaction is favored.

3) The concentration of product increases.

This will happen when we add reactants to a chemical reaction. According to  Le-Chatelier's principle, when we increase the concentration of reactants, the equilibrium will shift in the direction where this effect is minimal. Hence, the reaction will be in the forward direction which means that the concentration of product will increase.

4) The concentration of products decreases.

This will happen when we remove reactants from a chemical reaction. According to  Le-Chatelier's principle, when we decrease the concentration of reactants, the equilibrium will shift in the direction where this effect is minimal. Hence, the reaction will be in the reverse direction which means that the concentration of reactants will increase or concentration of products will decrease.

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A sample of Freon-12 (CF2Cl2) occupies 25.5 L at 298 K and 153.3 kPa. Find its volume at STP.
tangare [24]

35.8 L  
According to the combined gas law: pV=nRT 
p=pressure
 V=volume
 T=temperature in Kelvin
 R=the universal gas constant
  n=number of moles of the gas
 
 Rearranging the equation: n= pV/RT
 n=(153.3kPa)(25.5L)/R(298K)= 13.1/R 
 At STP (standard temperature and pressure) p=100kPa and T=273.15K. 

 Rearranging the equation again: V=nRT/p V=[(13.1/R)(R)(273.15K)]/100kPa = 35.8L

6 0
3 years ago
When a popsicle melts, the particles
lina2011 [118]

Answer:

I think the answer is b but I could be wrong. but I believe the answer is b.

Explanation:

because As the popsicle melts, it goes through a change of state or phase change. A change of state when a substance changes physical form but not in molecule make up. The molecules do not change into something different they just gain or lose energy and movement.

7 0
3 years ago
What is the molality of a solution containing 100 grams of glucose (C6H12O6, molar mass = 180 g/mol) dissolved in 2.5 kg of wate
meriva

Answer:

The answer to your question is molality = 0.22

Explanation:

Data

molality = ?

mass of glucose = 100 g

molar mass of glucose = 180 g

mass of water = 2.5 kg

Process

1.- Calculate the moles of glucose using proportions

                180 g ------------------ 1 mol

                100 g ------------------  x

                   x = (100 x 1) / 180

                   x = 100 / 180

                   x = 0.56 moles

2.- Calculate the molality

Formula

molality = moles / mass of solvent

- Substitution

molality = 0.56 / 2.5

- Simplification

molality = 0.22

6 0
4 years ago
a gas sample occupies a volume of 140 mL at a temperature of 296 K and a pressure of 98.2kPa. how many moles of gas are there? s
Tamiku [17]

Answer:

0.00559 mol

Explanation:

The following data were obtained from the question:

V = 140mL = 0.14L

T = 296K

P = 98.2kPa = 98200Pa

Recall: 101325Pa = 1atm

98200Pa = 98200/101325 = 0.97atm

R = 0.082atm.L/Kmol

n =?

The number of mole (n) can be obtained as follows:

PV = nRT

n = PV /RT

n = (0.97x0.14)/(0.082x296)

n = 0.00559 mol

Therefore, the number of mole of the gas present is 0.00559 mol

4 0
4 years ago
A genetic mutation that causes abnormal cells to rapidly reproduce and divide often leads to ___________.
kari74 [83]

Answer:

cancer.

Explanation:

cancer is caused by abnormal cell division mechanism

6 0
3 years ago
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