Which of the following is not a physical change?
1 answer:
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Here we can say that number of moles as well as pressure will remain same for the balloon
so here we can say by ideal gas equation
so here for constant pressure and constant number of moles we have
now by rearranging the equation we have
so final volume will be 0.89 liter
Two dangerous elements can form a compound that is edible known as "NaCl salt".
<u>Explanation:</u>
Sodium and chlorine are two very dangerous elements. As the reaction between sodium and water is extremely violent and chlorine is a very toxic gas. But combination of these elements result into a harmless product with unique properties like it is edible and dissolves without exploding in water.
In sodium chloride reaction the atoms of sodium interact with chlorine atoms. Sodium will donate an electron (by becoming positively charged) to acceptor chlorine (which become negatively charged) as given in following reaction
As sodium and chlorine are very keen to achieve noble gas configuration by completing an octet on donating and accepting an electron respectively.
Answer:
a
x-component
y-component
b
Magnitude
direction is
Explanation:
From the question we are told that
The first vertical distance is
The first horizontal distance is
The second vertical distance is
Generally the displacement is
x-component
y-component
Generally the helicopters displacement is mathematically evaluated as
The direction is the angle the displacement of the helicopter makes with the horizontal which is mathematically evaluated as
=>
=>