Answer:
Explanation:
Step 1. Calculate the pOH
pOH =-log[OH⁻]
pOH =-log(1.0 × 10⁻⁹)
pOH = 9.00
Step 2. Calculate the pH
pH + pOH = 14.00
pH + 9.00 = 14.00
Answer:
1. Ar, Cl, Al, Mg, Na
2. O, S, Se, Te, Po
Explanation:
Just remember the trends. From left to right, atomic radius decreases because proton increases and pulls electrons closer. From top to bottom, atomic radius increases because there are more electron shells.
No because <span>Convection works because hotter faster moving molecules have a lower density and therefore rise to the surface. In a solid the molecules can't move relative to each other they can only vibrate. </span>
<span>Magnesium is the central atom of chlorophyll molecule. Chlorophyll is essential in plants for the process of photosynthesis. Chlorophyll are pigments absorbing sunlight. It is made up of porphyrin ring. At the centre of this ring magnesium forms the basic part.</span>
First, we write an equation for the reaction of Hydrogen and Oxygen to produce water:
H₂ + O₂ ⇒ H₂O
This equation is not balanced, we then balance the Oxygens:
H₂ + O₂ ⇒ 2H₂O
And now the Hydrogens:
2H₂ + O₂ ⇒ 2H₂O
Therefore, if one mole of Oxygen reacts, it will require two moles of Hydrogen and produce two moles of water.
