Answer:
In chemistry, an element is a pure substance which cannot be broken down by chemical means, consisting of atoms which have identical numbers of protons in their atomic nuclei. The number of protons in the nucleus is the defining property of an element,
Answer:
23 atoms. I hope this helped u
Explanation:
<u>Answer:</u> The molarity of anions
in the solution is 0.0316 M
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
![\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20the%20solution%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20solute%7D%5Ctimes%201000%7D%7B%5Ctext%7BMolar%20mass%20of%20solute%7D%5Ctimes%20%5Ctext%7BVolume%20of%20solution%20%28in%20mL%29%7D%7D)
We are given:
Given mass of iron (II) chloride = 0.10 g
Molar mass of iron (II) chloride = 126.75 g/mol
Volume of solution = 50 mL
Putting values in above equation, we get:
![\text{Molarity of iron (II) chloride}=\frac{0.10\times 1000}{126.75\times 50}\\\\\text{Molarity of iron (II) chloride}=0.0158M](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20iron%20%28II%29%20chloride%7D%3D%5Cfrac%7B0.10%5Ctimes%201000%7D%7B126.75%5Ctimes%2050%7D%5C%5C%5C%5C%5Ctext%7BMolarity%20of%20iron%20%28II%29%20chloride%7D%3D0.0158M)
1 mole of iron (II) chloride produces 1 mole of
ions and 2 moles of
ions
So, concentration of chloride ions (anions) in the solution = ![(2\times 0.0158)=0.0316M](https://tex.z-dn.net/?f=%282%5Ctimes%200.0158%29%3D0.0316M)
Hence, the molarity of anions
in the solution is 0.0316 M
Density = mass / volume so in this case 86/10=8.6