Answer:
D
Your sister's lights shine the brightest because the electrical outlet has more power.
Explanation:
When the same amount of heat is added to cold sand and cold water, the temperature change of sand will be higher because of its lower specific heat capacity.
<h3>What is specific heat capacity?</h3>
Specific heat capacity is the quantity of heat required to raise a unit mass of a substance by 1 kelvin.
<h3>Specific heat capacity of water and sand</h3>
Water, c = 4,200 J/kg⁰C
Sand, c = 830 J/kg⁰C
Q = mcΔθ
where;
- Δθ is temperature change
- Q is quantity of heat added
Δθ = Q/mc
Thus, for an equal mass of water and sand, when the same amount of heat is added to cold sand and cold water, the temperature change of sand will be higher because of its lower specific heat capacity.
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Answer: Liquids have the following characteristics: no definite shape (takes the shape of its container) has definite volume. particles are free to move over each other, but are still attracted to each other. liquids have lesser densities than solids. Intermolecular forces of attraction is weaker than solids. They have considerable space between the particles. Liquids flow from higher to lower level. Liquids have their boiling points above room temperature, under normal conditions.
I gave many characteristics
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The list that only includes terms that describe Cesium (Cs) is option (b) i.e atom, element, pure substance .
<h3>
What do you mean by the term atom , element, pure substance ?
</h3>
Atom, is the smallest unit of matter that has the characteristic properties of a chemical element .The atom is the basic building block of chemistry.
Element is a pure substance consisting of only one type of atom which all have the same numbers of protons. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.
Hence ,in the list that only includes terms that describe Cesium (Cs) is option (b) i.e atom, element, pure substance .
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Explanation:
It is known that for a body centered cubic unit cell there are 2 atoms per unit cell.
This means that volume occupied by 2 atoms is equal to volume of the unit cell.
So, according to the volume density
2 atoms =
=
Formula for volume of a cube is . Therefore,
Volume of the cube =
As lattice constant (a) =
=
Therefore, the value of lattice constant is .
And, for bcc unit cell the value of radius is as follows.
r =
Hence, effective radius of the atom is calculated as follows.
r =
=
=
Hence, the value of effective radius of the atom is .