Answer:
Electrolysis
Explanation:
Electrolysis is a process by which electrical energy is used to produce a chemical change. Perhaps the most familiar example of electrolysis is the decomposition (breakdown) of water into hydrogen and oxygen by means of an electric current. The same process can be used to decompose compounds other than water.
To obtain more accurate values of the densities of the pennies:
- more trials can be conducted to reduces the effect of measurement errors
- more care should be taken in taken volume measurements by displacement of water to avoid splashing of water.
<h3>What is density of a substance?</h3>
The density of a substance is the ratio of the mass of the substance to the volume of that substance.
It is a measure of the compactness of the matter in a substance.
The densities of the pennies made before 1982 was 8.7 g/ml
The actual density of pennies made before 1982 is about 8.8 g/mL.
The densities of the pennies made after 1982 was 6.9 g/ml
The actual density of pennies made after 1982 is about 7.2 g/mL.
Due to several random and experimental errors, the values obtained from the experiment are not exactly the same with the accepted values.
To obtain more accurate values:
- more trials can be conducted to reduces the effect of measurement errors
- more care should be taken in taken volume measurements by displacement of water to avoid splashing of water.
In conclusion, the densities varied as as a result of random and experimental errors.
Learn more about density at: brainly.com/question/1354972
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Answer:
Explanation:
Assuming that temperature is constant
According to Boyle's Law, at constant temperature pressure is inversly proportional to the volume and mathematically it can be expressed as:
..........1
from the first equation after putting all the value
we get,
Answer:
B. Building houses near the beach
Explanation:
it was right on edge
Answer:
A.) 8.796 B.) 234780 C.) 25.8
Explanation:
thats all i can read the rest is blurry
