Answer:
An atom is the basic particle elements are made from
<h2>
Answer: x = 6</h2>
Explanation:
Molar mass of a compound is the sum of the molar mass of all the atoms of the compound.
⇒ Molar mass of the Nickel Compound (Hydrated Nickel (II) Nitrate)
= Molar mass (Ni+ 2N + 6O)+ x (2H+ O)
= [58.693 + 2(14.007) + 6(15.999)] + x [2(1.008) + 15.999] g/mol
= (182.701 + 18.015x) g/mol
Since the molar mass is known to be 290.7 g/mol
then 182.701 + 18.015x = 290.7
⇒ 18.015x = 290.7 - 182.701
x = (290.7 - 182.701) ÷ 18.015
∴ x = 6 [conventionally expressed as a whole number]
that makes the compound Nickel Nitrate Hexahydrate
<u>Answer:</u> The percentage abundance of isotope is 69 %.
<u>Explanation:</u>
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
.....(1)
We are given:
Let the fractional abundance of isotope be 'x'
- <u>For isotope:</u>
Mass of isotope = 62.93 amu
Fractional abundance of isotope = x
- <u>For isotope:</u>
Mass of isotope = 64.93 amu
Fractional abundance of isotope = (1-x)
- Average atomic mass of copper = 63.55 amu
Putting values in above equation, we get:
Converting this fractional abundance into percentage abundance by multiplying it by 100, we get:
Hence, the percentage abundance of isotope is 69 %.
Answer:
Mutualism
Explanation:
In Mutualism, both parties benefit.