Answer:
0.20moles
Explanation:
1 mole Na contains 23 g Na
23 g Na =1 mole of Na
1 g Na= 1/23 moles of Na
4.6 g Na= 1/23×4.6= 4.6/23=0.2 moles
Therefore 0.2 moles are present in 4.6 g of Na
Answer:
Na⁺ Cl⁻
Explanation:
Sodium form cation by losing one electron and chlorine form anion by accepting one electron. Both form ionic compound sodium chloride.
Ionic bond:
It is the bond which is formed by the transfer of electron from one atom to the atom of another element.
Both bonded atoms have very large electronegativity difference. The atom with large electronegativity value accept the electron from other with smaller value of electronegativity.
For example:
Sodium chloride is ionic compound. The electronegativity of chlorine is 3.16 and for sodium is 0.93. There is large difference is present. That's why electron from sodium is transfer to the chlorine. Sodium becomes positive and chlorine becomes negative ion.
Mulch includes compost, grass clipping, leaves or other organic matter which increaese the fertility of soil by providing the necessary nutrients.
Volume of much used
To converting into m^3, divide it by 10^6
Thus, riya is applying mulch at rate of 0.25 m^3 per m^2 of garden.
4. I meter
5. 0.453 kilometers
6. 89.84700 microns
7. Yo momma
I am thinking that when you wash an insoluble precipitate with water that the water will not be fully saturated with contaminants. Therefore, the concentration of contaminants would go down with each wash, whereas if you only washed it once with a larger volume of water, it would be less contaminated wash water.