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<span>In the laws of mathematics, especially in rounding off digits, you
should take note of the digit following that number no matter how long or short
a number is. If the numberis preceded by numbers between 0-4, the number does
not change. However if its is preceded by numbers between 5-9, add one to the
number. For example, 145698. If it is rounded off to the nearest hundreds,
since 9 is the number after 6, add 1 to 6 and it becomes 145700. If it is
rounded off to the nearest hundred thousands, since 4 is the number after 1,
you do not add, the number stays the same and it becomes 100000</span>
Answer:
There is an overall release of energy when bonds form.
Explanation:
There is a general release of energy when bonds form. This energy is called bond energy.
Bond energy is involved in the breakdown or formation of one or more bonds between atoms of a molecule. Atoms bond with each other to achieve their electronic stability, that is, they move from a higher energy situation to a lower energy one. With this we can state that when the bond between atoms is formed, energy is released; therefore, its breakdown depends on energy absorption.
Answer : The mass of in the solution is, 19.4 grams.
Explanation : Given,
Molarity of solution = 0.50 M
Volume of solution = 250 mL
Molar mass of = 155.6 g/mole
Molarity : It is defined as the number of moles of solute present in one liter of volume of solution.
Formula used :
Now put all the given values in this formula, we get:
Therefore, the mass of in the solution is, 19.4 grams.