Plasma is the fourth state of matter. Plasma occurs at extreme high temperatures. It is found in stars, lightning, and neon lights. Plasma is the most commonly found matter in the universe, even though its not common on earth.
In crystalline solids, the particles are arranged in a repeating, three dimensional pattern called a crystal. Some forms of crystalline solids are table salt, sugar, sand, and snow. Diamonds are also crystalline solids.
Gas is a matter that does not have a definite shape or volume.The particles in gas are much father apart than those in a liquid or solid. Gas particles move at high speeds in all direction.
Plasma is different because it can only exist in extremely high temperatures. It is not common on Earth, like the other states of matter. It is only common in the universe. Plasma is found in a lot of things in space. Plasma is not bound to one atom, so it is free. Plasma is formed by adding more heat to the molecules of gas. Eventually, the molecules are moving so fast, that they break apart from their atoms, and then they are positively charged ions, or plasma.
Answer:
Diastereomers can have different physical properties and reactivity. They have different melting points and boiling points and different densities.
Answer:
The correct answer is 0.67 g H₂
Explanation:
Isopropyl alcohol (C₃H₇OH) can decompose to give acetone (C₂H₆OH) and hydrogen gas (H₂) according to the following chemical equation:
C₃H₇OH (g) ⇒ C₂H₆CO(g) + H₂(g)
We can calculate the initial mass of isopropyl alcohol from the density and volume data:
density = m/V = 0.785 g/mL
⇒ m = density x V = 0.785 g/mL x 25.6 mL = 20.096 g C₃H₇OH
According to the chemical equation 1 mol of C₃H₇OH gives 1 mol H₂. The molar mass of C₃H₇OH is:
molar mass C₃H₇OH = (12 g/mol x 3) + (1 g/mol x 7) + 16 g/mol + 1 g/mol = 60 g/mol
molar mass H₂ = 1 g/mol x 2 = 2 g/mol
So, we obtain: 2 g H₂ from 60 g C₃H₇OH. We multiply this stoichiometric ratio (2 g H₂/60 g C₃H₇OH) by the initial mass of C₃H₇OH to obtain the mass of H₂ is formed:
20.096 g C₃H₇OH x (2 g H₂/60 g C₃H₇OH) = 0.6698 g ≅ 0.67 g H₂
Time t=2.4 minutes=2.4×60=144 seconds
distance s=1.2 miles=1.2×1609=1930.8 meters
speed v=s/t=1930.8÷144=[tex] \frac{1930.8}{144} = \frac{160.9}{12} =[/13.408m/s ~nearly]
The statement that describes a chemical reaction at equilibrium is 4)<span> </span><span>The concentrations of the products and reactants are constant.</span><span>
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