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frez [133]
3 years ago
5

In the formula 5CaSO4 the total number of sulfur atoms present is a. 1. b. 5. c. 9. d. 20?

Chemistry
2 answers:
Ierofanga [76]3 years ago
5 0

Answer:

b. 5

Explanation:

The name of the compound above is calcium tetraoxosulphate . The coefficient is 5 means the compound exist as 5 moles. It simply means 5 moles of CaSO4. The natural chemical formula has 1 atom of calcium, 1 atom of sulfur and 4 atom of oxygen.

Since the compound according to the formula exist in 5 mole. The number of atom of Calcium is 1 × 5 = 5 atoms, Sulfur = 1 × 5 = 5 atoms and oxygen = 4 × 5 = 20 atoms.

The total number of atoms of sulfur in the Formula, 5CaSO4 (Calcium sulphate) is 5 atoms.

podryga [215]3 years ago
4 0
The answer is b . (1*5=5)
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Properties of matter with three example each
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Consider the elements: Na, Mg, Al, Si, P.
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Answer:

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8 0
3 years ago
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6 0
1 year ago
If the atmospheric pressure is 0.975 atm what is the pressure of the enclosed gas
Nuetrik [128]
Missing in your question:
Picture (1)
when its an open- tube manometer and the h = 52 cm. 
when the pressure of the atmosphere is equal the pressure of the gas plus the pressure from the mercury column 52 Cm so, we can get the pressure of the gas from this formula:
P(atm) = P(gas) + height (Hg)
∴P(gas) = P(atm) - height (Hg)
              = 0.975 - (520/760) 
              = 0.29 atm
Note: I have divided 520 mm Hg by 760 to convert it to atm
Picture (2)
The pressure of the gas is the pressure experts by the column of mercury and when we have the Height (Hg)= 67mm 
So the pressure of the gas =P(atm) + Height (Hg)
                                             =  0.975 + (67/ 760) = 1.06 atm
Picture (3) 
As the tube is closed SO here the pressure of the gas is equal the height of the mercury column, and when we have the height (Hg) = 103 mm. so, we can get the P(gas) from this formula:
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6 0
3 years ago
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