She will use the periodic table of elements to not only find out the chemical symbols of the elements written within the name, but also to check whether or not the elements are metals and or nonmetals, from this determine the ionic charges if needed for metals, and for metals that have more than one ionic charge, use a Roman numeral to represent the ionic charge that she would be using in writing the chemical formula of the compound.
Answer:
1. Hydrogen
Explanation:
These planets contain liquid hydrogen in their interior, while the earth has liquid iron in it.
When liquid hydrogen is in tremendous pressure enviroments, the electrons that make up each atom of this element end up "jumping" to other atoms. These "jumps" allow liquid hydrogen to behave like a metal.
In addition, with the constant energy released by the nucleus of planets like Jupiter and Saturn, as well as their rotations, the liquid hydrogen receives induction of currents, giving rise to extremely powerful magnetic fields.
The simplest ratio of elements in a compound
Explanation:
When we have direct sunlight, the temperature is higher compared to indirect sunlight.
Direct sunlight is usually overhead whereas indirect sunlight is at an angle to the surface.
- Direct sunlight impacts the surface with more energy concentrated on a smaller surface area.
- This warms the surface more.
- Indirect sunlight is diffuse and spreads over a wider area.
- This leads to a reduction in temperature.
Answer:
The rain drop of mass 0.050 g has 0.0028 moles of water.
Explanation:
We know that for each element or compound the molar mass of that compound is equal to 1 mole of that compound. So in the present case, the molar mass of water can be determined as sum of mass of two hydrogen atoms and one oxygen atom. Thus, the molar mass of water is found to be 18.01 g.
Since, 18.01 g of water = 1 mole of water
Then, 1 g of water = 1/18.01 mole of water.
But, here it is given that the raindrop contains 0.050 g of water, then
0.050 g of water = 0.050× moles = 0.0028 moles of water.
Thus, the rain drop of mass 0.050 g has 0.0028 moles of water.