Answer:
D
Explanation:
A solid is characterized by structural rigidity and resistance to a force applied to the surface. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire available volume like a gas. Solids molecules stay close to eachother maintaining its shape meaning it is in a ordered pattern.
The correct option is C.
When glucose is stirred into water to form a solution, then glucose is the SOLUTE and water is the SOLVENT. A solute refers to a substance that is dissolved in a solvent. For instance, salt is the solute that is dissolved in salt solution. A solvent on the other hand refers to the liquid into which the solute was dissolved. For instance, in the case of salt solution, water is the solvent, because it is used to dissolve the salt.
The speed of sound is given by the formula
Speed of sound = square root (Young's Modulus/density)
Young's modulus for gold = 78 GPa which is 7.8 * 10^10 Pa
Speed of sound = (7.8 * 10^10 / 19.3 ) = sqrt (4.04 * 10^9 )
Speed of sound = 6.36 * 10^4 m/s <<<=== answer.
Answer: Rate of reaction is an "extensive property". Rate of generation of a chemical species is an "intensive property"
Explanation:
- Let´s check out the Factors that affect the speed of reactions:
Temperature, Physical state of the reagents, Presence of a catalyst, Pressure, light, Concentration of the reagents.
When having a general chemical reaction like this:
aA + bB → cC + dD
Usually the rate of reaction is represented by the next equation
![Rate = k [A]^{x} [B]^{y}](https://tex.z-dn.net/?f=Rate%20%3D%20k%20%5BA%5D%5E%7Bx%7D%20%5BB%5D%5E%7By%7D)
Where k= constant
x, y = reactant orders
A, B = reactant concentration
As we can see in the last equation, the rate of reaction <u>depends directly of the amount of material present</u> in a sample, that is why it is an "extensive property"
- The rate of generation of a chemical species, depends of other factors like Temperature, Presence of a catalyst, Pressure. As we can see all the factors that allow the speed of generation of a new chemical species let us know that this is an<u> </u><u>intensive property</u><u> because it doesn´t depends of the amount of material.</u>
Answer:
W and X
Explanation:
isotopes : are masses of atoms with the same number of proton and electron but different neutron .
W and X have the same number of protons and different number of neutrons.
