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yaroslaw [1]
3 years ago
5

Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 7.00 moles of aluminum sulfate, al2(so4)3. express the nu

mber of
Chemistry
1 answer:
nignag [31]3 years ago
6 0
We are given with 7 moles of a compound with a molecular formula of al2(so4)3 and is as asked here to determine the number of moles of Al, S and O. In a mole of aluminum sulfate, there are 2 moles of Al, 3 moles of S and 12 moles of O. Hence in total, there are 14 mol Al, 21 mol S, and 84 mol O. 
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If the value for ΔS is postive, and the value for ΔH is negative, thr reaction will be
dmitriy555 [2]

It follows that the reaction is spontaneous at high temperatures Option A.

<h3>What is ΔS ?</h3>

The term ΔS is referred to as the change in the entropy of the system. Now recall that entropy is defined as the degree of disorderliness in a system. If a system is highly disorderly then it means that it has a high entropy. Also, ΔH has to do with the heat change that accompanies a reaction.

We know that both the entropy and the heat change can both either be positive or negative. Now we know that the equation ΔG = ΔH - TΔS can be used to ascertain whether or not a reaction will be spontaneous. If the result is negative, then the reaction will be spontaneous.

As such, when then it follows that the reaction is spontaneous at high temperatures Option A.

Learn more about spontaneous reaction:brainly.com/question/13790391

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6 0
1 year ago
Will lead (Pb) react with HgSO4?
lora16 [44]

Answer:

B

Explanation:

The electrochemical series can be used to check if a particular element has a greater activity than the other. Firstly, on the electrochemical series, it can be seen that lead is at a higher position compared to mercury. All things being equal, it will show a higher activity than mercury and hence can knock it off its salt.

Although it is the Overall standard electrode potential that tells us if a reaction is feasible or not, we can use the activity series to quickly discern if the reaction is possible or not. The overall standard electrode potential of both is positive which makes the reaction to be feasible and hence lead can display mercury off its salt

7 0
3 years ago
What factors affect how tall people grow?
NikAS [45]

Answer:

it's thought that genetic factors account for 60 to 80 percent of your final height. Certain environmental factors, such as nutrition and exercise, typically account for the remaining percentage. Between age 1 and puberty, most people gain about 2 inches in height each year.

Explanation:

7 0
3 years ago
Read 2 more answers
What are TWO control variables?
viva [34]

Answer1234

Explanation:

8 0
1 year ago
Calculate the mass % of K in potassium phosphate
Blizzard [7]

Answer:

\large \boxed{\mathbf{1. \, \,55.26 \, \%; \, \,2. \, \,30.15 \, \%  }}

Explanation:

1. Mass percent of K

\begin{array}{cccr}\mathbf{Atoms} & \textbf{Contribution} &   & \textbf{Subtotal}\\\text{3K} & 3 \times 39.10 & = & 117.30\\\text{1P} & 1 \times 30.97 & = & 30.97\\\text{4O} & 4 \times 16.00 & = &64.00\\& \text{TOTAL} & = & \mathbf{212.27}\\\end{array}

\text{Percent K} =  \dfrac{\text{117.30 g}}{\text{212.27 g}} \times \, 100\% =  \mathbf{55.26 \, \%}\\\text{The percent by mass of potassium is $\large \boxed{\mathbf{55.26 \, \% }}$}

2. Mass percent of O

\text{Percent O} =  \dfrac{\text{64.00 g}}{\text{212.27 g}} \times \, 100\% =  \mathbf{30.15 \, \%}\\\text{The percent by mass of oxygen is $\large \boxed{\mathbf{30.15 \, \% }}$}

6 0
3 years ago
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