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Tomtit [17]
3 years ago
14

What are the four states of matter and explain them

Chemistry
1 answer:
Snezhnost [94]3 years ago
6 0
The four states of matter are solid, liquid, gas, and plasma.

Solid: a solid object has a definite volume and shape i.e. A box
Liquid: liquid has a definite volume but no definite shape i.e. Water
Plasma: plasma has some of the properties of gas but it's a good trainer of electricity and is a affected in a magnetic field i.e. A star
Gas: gas does not have a definite shape or volume so it takes the shoe of its container i.e. Balloon
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What did alexander fleming discover that earned him the 1945 novel prize of medicine?
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How did the Bohr model of the atom affect scientific thought?
Vadim26 [7]

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C. Scientists accepted the model at first but later rejected it.  

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alexira [117]
The values of x represents that number of moles of water molecules that is present per mole of the salt magnesium sulfate. To determine the value for this, we need to know how much is the water that is lost after heating the sample assuming that all of the water molecules are evaporated leaving only the unhydrated form of the salt. We calculate as follows:

Mass of hydrated salt = 3.484 g
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Mass lost = 3.484 g - 1.701 g = 1.783 g

The mass lost is equal to the mass of water lost.

Moles water lost = 1.783 g ( 1 mol / 18.02 g ) = 0.0989 mol H2O
Moles of unhydrated salt = 1.701 g ( 1 mol / 120.37 g ) = 0.0141 mol MgSO4

moles water / moles MgSO4 = 0.0989 mol H2O / 0.0141 mol MgSO4 = 7

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How many values of these of these trials can be considered accurate?
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