Skip to main content
J

Jayme Osinski

Feb 09, 2025

If 30.0g of MgSO4*7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?

If 30.0 g of magnesium sulfate heptahydrate (MgSO4·7H2O) is thoroughly heated, what mass of anhydrous magnesium sulfate (MgSO4) will remain after the water molecules are lost?

3 Answers

A
Anonymous

Feb 02, 2025

Anhydrous magnesium sulfate would be the mass of magnesium sulfate without the water of crystallization.

Hence

Mass of magnesium sulphate = 24 + 32 + 16 X 4

= 120

Mass of hydrated magnesium sulphate

= 24 + 32 + 16 X 4 + 7 X 18

= 246

Mass of anhydrous magnesium sulfate

= 120/246 X 30

= 14.63414634g

= 14.6g (3 significant figures)

Hope you have had all your queries cleared.

A
Anonymous

Feb 15, 2025

RMM of the whole compound = 246 g

Rmm of 7H2O = 126g

so RMM of anhydrous sulfate = 120g

mass of anhydrous sulfate = (120/246) * 30g = 14.63g.

Want to answer this question?

Join our community to share your knowledge!

Related Questions

1
How many oxygen atoms are in 2.00 grams of quartz?

How many oxygen atoms are in 2.00 grams of quartz? Could someone please provide a detailed explanation of the calculatio...

1
If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what fraction of the water would be vaporized?

"If this same quantity of energy were transferred to 2.5 kg of water at its boiling point, what fraction of the water wo...

3
A question for bike riders, How come the back wheel is always following the front one, Is that odd or what. ?

Have you ever noticed how the rear wheel of a bike seems to follow the front wheel closely? Why does this happen, and is...

3
How many moles of CO2 are produced when 5.45 mole of ethane are burned in an excess of oxygen?

How many moles of CO2 are produced when 5.45 moles of ethane (C2H6) are burned in an excess of oxygen?

3
Identify each of the following as measurements?

Please identify each of the following as measurements: Length Area Volume Mass Density Time Temperature...

2
Suppose there are two known compounds containing generic x and y. you have a 1.00g sample of each compound.

Suppose there are two known compounds containing the elements x and y, and you have a 1.00 g sample of each compound. Wh...

1
Today’s CPUs run at speeds measured in kilohertz.?

Today's CPUs operate at speeds measured in gigahertz rather than kilohertz. Is this statement true or false?

3
what is the hybridization of phosphorus atom in PCl3?

What is the hybridization of the phosphorus atom in PCl3? Additionally, could you please provide an explanation of the s...

2
a question regarding torque in a magnetism setting?

I have a question regarding torque in a magnetism context. I understand that the equation τ = IABsin(θ) will be relevant...

4
Cual es la tendencia de los metales al formar en lances

¿Cuál es la tendencia de los metales al formar enlaces? ¿Qué rango de edad sería el adecuado para explicar esta respuest...