I think 8, because you have to end up with a balanced equation.
Pizza because the ingredients arent mixed together completely. you can clearly see the different ingredients as compared to the others
The mantle has a mass of around that is around 68.4% of earth's mass.
So to calculate moles we need to first find out the mass of oxygen and silicon present in mantle. It is given that oxygen is 44.8% by mass in mantle and 21.5% by mass in mantle, therefore to calculate its mass, we need to use
Now, to calculate mass percentage of oxygen
Similarly the mass of silicon can be calculated
Now, the moles of any substance is calculated by
where, mass of oxygen in kilograms is
So,
Similarly
Now, to calculate mole ratio we need to divide every moles to the lowest calculated mole that is the moles of Si and round it off to the nearest whole number.
Answer:
KOH
Explanation:
When ionic compounds (a metal and a nonmetal) dissolve, they are good conductors of electricity, and would result in the brightest light. Weak bases and covalent compounds do not dissolve, so KOH, a strong base and ionic compound, would dissolve and conduct electricity.
Explanation:
biotic factors are the things which have life like animals and plants
And Abiotic factors are the things which don't have life like air,stone and river