Hey there!
I can't be sure my answers are the exact words, but it should be something along the lines of...
The amount of water on Earth is constant, but the form and location of the water changes as it moves through the water cycle.
This means that Earth has always had the same amount of water within in, along with it being the same water the whole time. No new water was introduced to our planet. Some of our water is liquid, some is solid, and some is gas. Some is deep in the soil and some is high up in the atmosphere. Some is in rain and some is in snow.
I hope this helps!
ionic bond:
Bond formed when an atom donates its electron and other atom receives those electrons.
polar covalent:
Bond formed by equal sharing of electrons between both the atoms and there is an electronegativity difference between the two atoms.
Nonpolar covalent:
Bond formed by equal sharing of electrons between both the atoms and there is no electronegativity difference between the two atoms.
Metallic:
Formed between two metals.
So the bond between :
Phosphorus and chlorine-polar covalent bond as it is formed by equal sharing of electrons between both the atoms and there is an electronegativity difference between the two atoms.
Potassium and oxygen -ionic bond as here potassium donates its electron and oxygen receives those electrons
Fluorine and fluorine -Non polar covalent bond as formed by equal sharing of electrons between both the atoms and there is no electronegativity difference between the two atoms.
Copper and aluminum-metallic bond as Formed between two metals.
Carbon and fluorine -polar covalent bond as it is formed by equal sharing of electrons between both the atoms and there is an electronegativity difference between the two atoms.
Carbon and hydrogen --Non polar covalent bond as formed by equal sharing of electrons between both the atoms and there is no electronegativity difference between the two atoms.
Aluminum and oxygen--ionic bond as here aluminum donates its electron and oxygen receives those electrons
Silver and copper --metallic bond as Formed between two metals.
Answer:
probably
Explanation:
Because fossil fuel is the main fuel source, so any fuels that are not fossil fuels are alternative.
The definition of molarity is:
Molarity = moles of solute / total volume of solution in
Liters
In this case, our solute is Sulfuric Acid. To solve this
problem, let us assume a basis for calculation.
Let us say that,
Total mass of solution = 100 g
Therefore mass of H2SO4 = 20 g
<span>The molar mass of H2SO4 = 98.079 g / mol</span>
Calculating for number of
moles of H2SO4:
number of moles = <span>20 g
/ (98.079 g / mol)</span>
number of moles = 0.204
mol
Calculating for the volume
of solution using the density:
<span>total volume of solution = 100 g / (1.105 g / mL)</span>
<span>total volume of solution = 90.50 mL = 0.0905 L</span>
Therefore the molarity is:
Molarity = 0.204 mol / 0.0905
L
Molarity = 2.2542 mol / L
<span>Molarity = 2.25 M</span>
Answer:
For the tetrahedral case the repulsion is smaller.
Explanation:
It is smaller for the tetrahedral case because he angles for tetrahedral molecules are greater (109.5) then for octahedral molecules (90). The greater the distance between the atoms the smaller the repulsion, and so the bigger are angles the bigger is distance.
