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2 years ago

Molecular shape of XeOF4

1 answer:

6 0

42 valence electrons 8 valence electrons are coming from the xenon atom 6 valence electrons are coming from the oxygen atom 7 valence electrons from each of the four fluorine atoms. Answer: Square pyramidal.

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Calculate the initial rate for the formation of c at 25 ∘c, if [a]=0.50m and [b]=0.075m

Alenkinab [10]

Rate = k * [A]^2 * [B]^1

Use the data from any trial to calculate k. 

k = (rate)/([A]^2 * [B]^1) 

E.g., for Trial 1, we have 

rate = 3.0×10−3 M/s 
[A] = 0.50 M 
[B] = 0.010 M 

Plug those numbers in and crank out the answer. 

Now with the calculated value of k, calculate the initial rate for [A] = 0.50 M and [B] = 0.075 M 

rate = k * [A]^2 * [B]^1 

k = calculated value 
[A] = 0.50 M 
[B] = 0.075 M

3 0

3 years ago

Read 2 more answers

Using the element above answer the following question:

olga_2 [115]

Answer:

20.180

Explanation:

Atomic mass is the sum of the masses of the protons, neutrons, and electrons in an atom, or the averagemass, in a group of atoms

7 0

3 years ago

Be sure to answer all parts. Dimercaprol (HSCH2CHSHCH2OH) was developed during World War I as an antidote to arsenic-based poiso

Sauron [17]

Answer:

For A: The number of arsenic atoms are $3.4\times 10^{21}$

For B: The percent composition of mercury, thallium and chromium in their complexes are 61.76 %, 62.2 % and 29.51 % respectively.

Explanation:

For A:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of dimercaprol = 696 mg = 0.696 g (Conversion factor: 1 g = 1000 mg)

Molar mass of dimercaprol = 124.21 g/mol

Putting values in above equation, we get:

$\text{Moles of dimercaprol}=\frac{0.696g}{124.21g/mol}=0.0056mol$

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of molecules.

So, 0.0056 moles of dimercaprol will contain $0.0056\times 6.022\times 10^{23}=3.4\times 10^{21}$ number of molecules.

As, 1 molecule of dimercaprol binds with 1 atom of Arsenic

So, $3.4\times 10^{21}$ number of dimercaprol molecules will bind with = $1\times 3.4\times 10^{21}=3.4\times 10^{21}$ number of arsenic atoms

Hence, the number of arsenic atoms are $3.4\times 10^{21}$

For B:

We know that:

Molar mass of dimercaprol = 124.21 g/mol

Molar mass of mercury = 200.59 g/mol

Molar mass of thallium = 204.38 g/mol

Molar mass of chromium = 51.99 g/mol

Also, 1 molecule of dimercaprol binds with 1 metal atom.

To calculate the percentage composition of metal in a complex, we use the equation:

$\%\text{ composition of metal}=\frac{\text{Mass of metal}}{\text{Mass of complex}}\times 100$ ......(1)

For mercury:

Mass of Hg-complex = (200.59 + 124.21) = 324.8 g

Mass of mercury = 200.59 g

Putting values in equation 1, we get:

$\%\text{ composition of mercury}=\frac{200.59g}{324.8g}\times 100=61.76\%$

For thallium:

Mass of Tl-complex = (204.38 + 124.21) = 328.59 g

Mass of thallium = 204.38 g

Putting values in equation 1, we get:

$\%\text{ composition of thallium}=\frac{204.38g}{328.59g}\times 100=62.2\%$

For chromium:

Mass of Cr-complex = (51.99 + 124.21) = 176.2 g

Mass of chromium = 51.99 g

Putting values in equation 1, we get:

$\%\text{ composition of chromium}=\frac{51.99g}{176.2g}\times 100=29.51\%$

Hence, the percent composition of mercury, thallium and chromium in their complexes are 61.76 %, 62.2 % and 29.51 % respectively.

8 0

3 years ago

Sample Response: The change in her position (from beginning to end), along with the direction, is considered her displacement. T

kykrilka [37]

The sample response given in the question is right.

To find the answer, we need to know more about the distance and displacement.

<h3>How distance differ from displacement?</h3>

Displacement is the shortest distance between the initial and final points of a body.
It is the change in position with a fixed direction.
Displacement is a vector quantity and can be positive, negative or zero values.
Distance is the length of actual path of the body between initial and final positions.
It's a scalar quantity and it can be positive or zero.
The magnitude of displacement is less than or equal to the distance travelled.

Thus, we can conclude that the given sample response is right.

Learn more about distance here:

brainly.com/question/28124225

#SPJ1

3 0

1 year ago

Using the name of the ionic compound, select the appropriate chemical formula. Use the periodic table

Nata [24]

Answer:

Explanation:

Abcd

7 0

2 years ago

Read 2 more answers

Molecular shape of XeOF4​​

Molecular shape of XeOF4