<span>The correct
answer between all the choices given is the 4th choice or letter D. I am
hoping that this answer has satisfied your query and it will be able to help
you in your endeavor, and if you would like, feel free to ask another question.</span>
Answer: Option A) 25mL
Explanation:
Given that,
Original volume of gas (V1) = 75mL
Original temperature of gas (T1) = 450K
New volume V2 = ?
New temperature T2 = 150K
Since volume and temperature are given while pressure is held constant, apply the formula for Charle's law
V1/T1 = V2/T2
75mL/450K = V2/150K
To get the value of T2, cross multiply
75mL x 150K = 450K x V2
11250mL•K = 450K•V2
Divide both sides by 450K
11250mL•K / 450K = 450K•V2/450K
25mL = V2
Thus, the new volume of the gas is 25mL
When a block of ice is placed in a frying pan, it is first in a solid state, meaning that the particles are moving slowly and are tightly compacted together as well as vibrating. As the the temperature of the pan increases, the state of matter will go from a solid to a liquid, which will cause the thermal energy in the ice cube to increase and the particles will go from a vibrating state, to sliding state. By this time the ice will now be water. As the temperature of the pan continues to increase, the water will eventually become water vapor and turn into a gas because as the particles are heated, they will move faster causing them to expand.
Answer:
It is b to use a telescope
1) <span>Check all correct statements concerning pentyne.
a) </span><span>contains 5 carbons
b) </span><span>has a triple bond
c) </span><span>is an alkyne
2) </span><span>Which statement is not true of alkenes?
a) </span><span>They are more stable than alkanes.
3) </span><span>Butene would have 4 carbon atoms and a ______ bond.
a) Double Bond
4) </span><span>Which type of reaction to alkenes generally undergo?
a) Addition Reaction
5) </span><span>If the carbon atom of hydrocarbon is bonded to less than 4 other atoms, the hydrocarbon is considered _______.
a) Unsaturated
6) </span><span>Which of the following apply to unsaturated hydrocarbons? Select all that apply.
a) </span><span>They will react readily with other elements and compounds.
b) </span><span>They have double and triple bonds.
7) </span><span>A straight chain hydrocarbon with the formula C5H10:
a) </span><span>has a double C-C bond
8) </span><span>What is the general formula for alkenes?
a) </span><span>CnH2n
9) </span><span>Choose the statements about benzene that are correct.
a) </span><span>All of the C-C bonds are actually identical.
b) </span>The structure of the molecule is closed like a ring structure.