Answer:
A molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
Two optical isomers can form:
An equimolar mixture of two optical isomers is called a racemic mixture.
What is a Racemic mixture?
An equimolar mixture of two enantiomers that is optically inactive is known as a racemic mixture (or racemate) (i.e. does not rotate plane-polarized light).
The racemic mixture can be created by:
- Combining enantiomers in equal amounts, or (more frequently)
- Reactions that create one or more new chiral centers without the influence of chirality (i.e. chiral reagent, catalyst, etc.)
The light that is plane-polarized does not spin in an optically inactive mixture.
Since each enantiomer rotates plane-polarized light to an equal and opposite extent, an equimolar mixture of two enantiomers will typically result in a racemic mixture. There won't be any net rotation if they are both present in equal proportions.
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Well, for the atoms, one mole of anything has Avagadros number of atoms. For grams, look at the periodic table and the atomic mass is the molar mass. For the gaseous liters (O2 ,H2,and the bottom one which is STP), any mole of a gas at STP has a volume of 22.4 liters. The top one with the capital M is molarity and the equation for molarity is M=moles of thing/volume in liters. So you have the molarity which is two and the number of moles which is one. solve dor volume. So there you go.
There are a couple of ways todetermine if a reaction is exothermic or endothermic. Endothermic meaning that heat is added to the reaction to make the reactants interact and exothermic meaning heat is released during the reaction between the two reactants.
In endothermic reactions you can find a triangle above the arrow.
