Answer:
Graduated cylinder
Explanation:
A tall skinny cylinder used to measure volumes. It is generally a more accurate way to measure volume than a typical beaker or flask. Mortar and pestle - A mortar and pestle are used to crush and grind solids into a powder. The mortar is a bowl and the pestle is a small club-shaped tool.
Carbonyl group contains oxygen atom.
Answer:
When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. For example, when three oxygen atoms bond together, they form a molecule of ozone (O3). If a molecule forms from atoms of two or more different elements, we call it a compound.
Explanation:
Answer : The intensity of sound level in decibels is, 169 dB
Explanation:
The expression used for the intensity of sound level is given by the equation:
where,
I = final intensity = 
= initial intensity = threshold intensity of human hearing = 
Now put all the given values in the above formula, we get:
Thus, the intensity of sound level in decibels is, 169 dB
Answer: a truck crashes into a car
Explanation:
The truck drives in a wrong motion which makes the reaction of it crashing.
