Four different groups attached to it. A chiral carbon is an asymmetric carbon.
Enantiomers are a pair of stereoisomer molecules that are chiral. For an example, I have attached an image of a chiral carbon below.
Grinding quartz crystals down to produce sand is an example of a?
-physical change
Answer:
The Answer is 88%
Explanation:
The balanced ionic equation of the reaction



Looking at the above reactions
The original number of moles of
= 3 × number of moles of 
= 3 × volume × concentration of
Note: The formula for number of moles is volume × concentration
mol
The number of moles of
left after its reaction with ascorbic acid
=
x moles of 
=
x volume x concentration of 

Note: The division by 1000 is to convert mill liter to liter
Moles of ascorbic acid = moles of
reacted



Hence
Mass of ascorbic acid = moles of ascorbic acid × molar mass of ascorbic acid


Weight% of ascorbic acid = mass of ascorbic acid/mass of sample x 100%
= 70.55/80 × 100%
= 88.1%
Answer:
Argon gas
Explanation:
Between the options given, argon gas is the least reactive. Argon is known as a <em>noble gas</em>, this means that it is located in the group 18 in the periodic table. These gases are known for their low reactivity, under most circumstances.
The <u>electronic configuration</u> of argon helps us see why that is the case: With an atomic number of 18, it has an electronic configuration of 1s² 2s² 2p⁶ 3s² 3p⁶. This means the most external orbital is filled with electrons, meaning that there are not unpaired electrons able to react with other substances.
Answer:
B. Na
Explanation:
To identify an atom, you simply need to look at the number of protons. This atom has 11 protons. On the periodic table, you can see that the element with 11 protons is sodium (Na).