B. A light-year cuz 365 days is an year
NaOH is an example of an ionic crystal.
Option a
<h3><u>Explanation:</u></h3>
Sodium Hydroxide is a "white solid ionic compound" consisting of sodium cations Na+ and hydroxide anions
. If we look at the crystal structure of NaOH, we can see that it has the combinations of ionic and covalent bonds. The bond that is shared between Oxygen ( O ) and Hydrogen ( H ) is the covalent bond.
The Sodium ( Na ) is bonded with an "ionic bond to the hydroxide part of the compound". NaOH is an ionic solid because it is formed by the combinations of metal and non-metal. When the crystal of NaOH is dissolved in water it dissociates into Na+ ions (which is ionic in nature) and
ions which bonds ionically to the other compounds.
The correct answer is C because Zn+2HCl= ZnCl2+H
I don’t know how , what class is it for?
Answer:
We will derive the combined gas equation from the law of Gases
Boyle's law
P∝1/V
PV=Constant
Charles law
V∝T
Avogadro's Law
V∝n
By combining these three equations we get the combined gas equation
PV=nRT
V=nRT/P
If n=1 mole
V=RT/P
By putting the value of R, T, and P in the above equation we can calculate the volume of the gas at STP.