Solid, Liquid, Gas, and Plasma
Answer: 1.5 moles O2
Explanation:
The number of moles of each reactant and product is the number in front to the molecule when the equation is balanced.
You know that 1 mole of O2 gives you 2 moles of H2O
So you can set up a proportion using that.
1 mole O2. X moles O2
-------------- = -------------------
2 moles H2O. 3 moles H2O
Then cross multiply
2x=3
X=3/2 Or 1.5
So you need 1.5 moles O2 to get 3 moles of H2O.
Answer:
4.00 M = moles of solute. 12.0 L.
Explanation:
Answer:
C) 0, +5
Explanation:
P + H2O + HNO3 -> H3PO4 + NO
We consider all compounds that contain phosphorus in the equation
A substance that has no charge has a zero oxidation state
Hence at the reactant, phosphorus has an oxidation state of 0
Let us consider H3PO4 at the product side
Oxidation state of
H =+1×3=+3
O=-2×4=-8
P = ?
H3PO4 is a neutral compound and has 0 oxidation state
The sum of the individual oxidation states of each atoms in H3PO4 is equal to 0
Hence,
+3 + P + (-8) = 0
3+P-8=0
P=-3+8=+5
Hence the oxidation state of phosphorus in H3PO4 is +5
Therefore, the oxidation state of P in the reaction changed from
0 to +5
Phosphorus is said to have undergone oxidation
Most earthquakes occur along the edge of the oceanic and continental plates. The earth's crust (the outer layer of the planet) is made up of several pieces, called plates. The plates under the oceans are called oceanic plates and the rest are continental plates. The plates are moved around by the motion of a deeper part of the earth (the mantle) that lies underneath the crust. These plates are always bumping into each other, pulling away from each other, or past each other. The plates usually move at about the same speed that your fingernails grow. Earthquakes usually occur where two plates are running into each other or sliding past each other.