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iVinArrow [24]
3 years ago
15

Predict how the addition of a catalyst would affect the rate of the reaction below, and explain your prediction H2 (g) + I2 (g)

yields 2 HI
Chemistry
2 answers:
QveST [7]3 years ago
7 0
The catalyst is defined as a chemical substance that helps increase the rate of the chemical reaction without being changed or affected by the reaction itself (the catalyst is not involved in the reaction, it only aids with increasing its speed).

Based on the above definition, adding a catalyst to the reaction:
H2 + I2 .........> 2HI
will increase the rate of the reaction. This means that the reaction will proceed faster and the product (HI) will be formed faster that the case where the catalyst is not added.

Hope this helps :)
Fynjy0 [20]3 years ago
4 0
A catalyst is a chemical substance that hastens the chemical reaction. This does not participates in the creating the product(s) but allows it to be formed easily. With this, it is now known that the rate of the reaction becomes relatively higher compared to the uncatalyzed reactions.

Therefore, the answer to this item is the rate of the reaction becomes faster. 
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7 0
3 years ago
Which observation illustrates the law of conservation of mass?
const2013 [10]
The conservation of mass states that the total mass of reactants present before the reaction occurs is equal to the total mass of products after the reaction. From the choices, the second choice deems fit for the description of the law.
8 0
3 years ago
Read 2 more answers
On a small farm, the weights of eggs that young hens lay are normally distributed with a mean weight of 51.3 grams and a standar
Lelechka [254]

Answer:

83.85% of the population is between 46.5g and 65.7g

Explanation:

the 68-95-99.7 rule states that the probability that a random variable (X=Weights of the eggs) is found inside 1 standard deviation , 2 standard deviations and 3 standard deviations from the mean is 68% , 95% , 99.7% respectively

then calling Z to

Z= (X-μ)/σ

where μ= mean , σ = standard deviation , then

for X₁=46.5g

Z₁= (X₁-μ)/σ = (46.5g - 51.3g)/4.8 g= -1

1 standard deviation from both sides (±1) = 68%

then since the normal distribution is symmetrical

1 standard deviation from one side (±1) = 68%/2 = 34%

for X₂=46.5g

Z₂= (X₂-μ)/σ = (65.7 g - 51.3g)/4.8 g= +3

3 standard deviation from both sides (±1) = 99.7%

then since the normal distribution is symmetrical

3 standard deviation from one side (±1) = 99.7%/2 = 49.85%

then

between -1 standard deviation from the mean and +3 standard deviations from the mean there is= 34% +  49.85% = 83.85% of the population (since the regions do not overlap each other)

8 0
3 years ago
How does the volume of the balloon change after moving it to the hot room?How does the volume of the balloon change after moving
Ghella [55]

Answer: The balloons volume would increase.

Explanation: This is because when the balloon enters a warmer climate it expands due to more freedom within the molecules movement.

7 0
3 years ago
Why does every chemical reaction require a certain amount of activation energy
attashe74 [19]

Every chemical reaction requires a minimum amount of energy to undergo reaction.

The total energy required is Threshold energy. The chemicals have some internal energy and they require some extra energy which is known as activation energy.

The reaction occurs when two molecules or atoms come closer to each other and for this they need kinetic energy.

Now for an effective collision the two molecules or atoms should collide with a minimum amount of energy so that they may undergo reaction so again they need some energy

These kinetic energy and energy for effective collision is actually called as activation energy.

5 0
4 years ago
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