<span>The answer to this question would be: B.They are different.
A compound will have different characteristics from their element. </span>The interaction of different elements in a compound makes it so. They might have similar or opposite characteristic but it didn't always happen so those answers are not best.
Answer:
The correct answer to the question is
The unknown solution had a higher concentration of solutes
Explanation:
The process of the movement of the molecules of the solvent across the semipermeable membrane is known as osmosis
Osmosis is the passive transport of a solvent such as water through a selectively permeable membrane in a direction from a region of low solute concentration to a higher concentration region so as to equalize the concentration of the solute on both sides of the membrane
Answer:
-206.9kJ
Explanation:
Heat of combustion = -890kJ/mol
Mass of methane burnt = 3.72g
Unknown:
Heat liberated = ?
Solution:
Heat of combustion is the heat liberated when one mole of an element or compound is burnt completely in excess oxygen gas.
To solve this problem;
Find the number of moles of methane;
Number of moles =
Molar mass of CH₄ = 12 + 4(1) = 16g/mol
Number of moles = = 0.23moles
Now, heat liberated by 0.23mol of methane = -890kJ/mol x 0.23mol
= -206.9kJ
Answer:
Seismic waves
Explanation:
Scientists study earth's interior using seismic waves. These waves are produced during an earthquake.
- The waves have very unique properties that makes them useful for studying the subsurface.
- Two types of seismic waves are predominantly used.
- P -waves are the primary waves that passes through any medium
- S -waves are the secondary waves that passes only through solids
- Using these properties, scientists can study the earth's interior.