Answer:
m Br = 439.472 g
Explanation:
mass Br = ?
∴ mol Br = 5.50 mol
∴ molar mass Br 79.904 g/mol
mass = (mol)*(g/mol)
⇒ m Br = (5.50 mol)*(79.904 g/mol)
⇒ m Br = 439.472 g
HELP PLEASE.
She mixes two solutions and measures their pH before and after.
She asks her lab partner which base he thinks is hardest to study. <-- my answer
She measures the temperature of a solution before and after adding H2SO4.
Answer: Option (c) is the correct answer.
Explanation:
An experiment conducted by following a detailed and organized series of steps in such a manner that its result will reject or validate the hypothesis.
For example, using an acid-base indicator will help to measure the pH of a solution.
A scientific reaction is performed in controlled conditions with proper precautions unless it could be dangerous to perform the experiment.
Therefore, we can conclude that she asks her lab partner which base he thinks is hardest to study is not a scientific experiment.
We are required to explain the meaning of volume and mention the instrument used to measure liquid volume.
Since, volume comprises of length, width and height, then the formula used to calculate the volume of a solid object is length multiplied by width multiplied by height.
Therefore,
Volume of a solid object = Length × Width × Height
Read more:
Answer:
Volume is the amount of space that a substance occupies. A graduated cylinder is used to measure liquid volume. The formula used to calculate the volume of a solid object is = L x W x H
Explanation:
How does the second section relate to the final section?
A
Both sections provide specific examples of the effects of tsunamis.
B
Both sections compare and contrast different causes of tsunamis.
C
The second section describes problems with studying tsunamis. The final section describes how scientists discovered a solution to the problems.
D
The second section describes scientists' predictions about tsunamis. The final section provides information about whether they were correct.
Answer:A
Explanation: