Answer:
an example is water where (H) and oxygen (O) bond together to make (H2O)
Explain:
D. The volume of a new substance has increased.
Answer:
450 g/mol
Explanation:
To solve the problem the problem, it is necessary to use Graham's Law of effusion
This answer is consistent with what we know. A heavier gas will require more time to effuse than a lighter gas
Answer:
The flask covered with plastic wrap will contain more water that the flas left exposed.
Explanation:
Both flask will undergo evaporation of the water inside them into gas. The plastic wrapped flask will have the gaseous water condense back to water and return to the flask while the exposed flask will have the moisture evaporate into the air around it.
Answer : The concentration of the HCl in original bottle is 0.56 M.
Explanation :
According to neutralization law:
where,
= concentration of HCl
= concentration of NaOH
= volume of HCl
= volume of NaOH
Given:
= ?
= 0.25 M
= 10 mL
= 22.4 mL
Now put all the given values in the above formula, we get:
Therefore, the concentration of the HCl in original bottle is 0.56 M.