Titanium dioxide is a type of mixture if particles of titanium dioxide are insoluble in the liquid.
<h3>What is a mixture?</h3>
A mixture is composed of one or more pure substances in varying compositions.
A mixture is a material made up of two or more components joined together, but not chemically combined. In a mixture, a chemical reaction does not occur and each of its components maintains its identity and chemical properties.
A compound is a substance formed by the chemical combination of two or more different elements from the periodic table. The elements of a compound cannot be divided or separated by physical processes. They are not mixtures or alloys
An element is a type of matter made up of atoms of the same class. It is an atom with unique physical characteristics, a substance that cannot be decomposed by a chemical reaction.
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Answer:
38.36 L.
Explanation:
- We can use the general law of ideal gas: PV = nRT.
where, P is the pressure of H₂ in atm (P = 1.0 atm, STP conditions).
V is the volume of H₂ in L (V = ??? L).
n is the no. of moles of H₂ in mol (n = mass/molar mass = (10.0 g)/(2.0 g/mol) = 5.0 mol).
R is the general gas constant (R = 0.0821 L.atm/mol.K),
T is the temperature of H₂ in K (T = 0.0°C + 273 = 273.0 K, STP conditions).
<em>∴ V = nRT/P</em> = (5.0 mol)(0.0821 L.atm/mol.K)(273.0 K)/(1.0 atm) = <em>38.36 L.</em>
A piston-cylinder device contains helium gas, during a reversible, isothermal process the entropy of the helium will <u>sometimes </u>increase.
As entropy of an ideal gas depends on pressure and temperature . Hence , entropy change during isothermal process if pressure changes . Enropy changes whenever there is a transfer of heat . The change in entropy is the heat added divided by the temperature at which the transfer took place .
A piston-cylinder is a moving device that is made tight by the piston rings. It moves inside in a cylinder in the form of liquid and later expands and then contracts.
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Answer:
The two that are true are, "this represents a pure compound in two different states" and "it represents a mixture a solid and a gas".
Explanation:
This two are concluded only from the picture and the use of uniform colors throughout the picture (Showing the same element).
B. Rock Y cooled more slowly than rock X.
Explanation:
Igneous rocks are rocks that forms from the solidification of magma either on the earth surface or beneath surface.
Those that forms on the surface are called volcanic rocks
Those that forms beneath are called plutonic rocks.
When magma forms within the surface, it cools and solidifies slowly. This will allow crystals to grow slowly. Therefore, the crystals will have a big size in the rock. The texture of the rock is now said to be coarse grained.
Those that forms on the surface cool rapidly and the minerals are fine grained. This is the case with X
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