Answer: -
(a) 1.54 x 10² pm
(b) 1.3 x 10⁶ is the number of carbon atoms could be aligned side by side in a straight line across the width of 0.2 mm.
Explanation: -
1 å = 10² pm
Diameter of a carbon atom = 1.54 å = 1.54 x 10² pm
1 mm = 10⁹ pm
Total distance = 0.2 mm = 0.2 x 10⁹ pm
Number of carbon atoms could be aligned side by side in a straight line across the width = Total distance / Diameter of a carbon atom
= 
= 1.3 x 10⁶
Answer:
the answer I think is 76.5L
the actual yield is the amount of Na₂CO₃ formed after carrying out the experiment
theoretical yield is the amount of Na₂CO₃ that is expected to be formed from the calculations
we need to first find the theoretical yield
2Na₂O₂ + 2CO₂ ---> 2Na₂CO₃ + O₂
molar ratio of Na₂O₂ to Na₂CO₃ is 2:2
number of Na₂O₂ moles reacted is equal to the number of Na₂CO₃ moles formed
number of Na₂O₂ moles reacted is - 7.80 g / 78 g/mol = 0.10 mol
therefore number of Na₂CO₃ moles formed is - 0.10 mol
mass of Na₂CO₃ expected to be formed is - 0.10 mol x 106 g/mol = 10.6 g
therefore theoretical yield is 10.6 g
percent yield = actual yield / theoretical yield x 100%
81.0 % = actual yield / 10.6 g x 100 %
actual yield = 10.6 x 0.81
actual yield = 8.59 g
therefore actual yield is 8.59 g
The 3 particles are protons, neutrons, and electrons?
Option A
using verbal and nonverbal communication to show a person is listening is a critical part of listening
<u>Explanation:</u>
An adequate hearer obligation listens and recognizes the language sounds focused approaching them, know the information of the sounds, critically estimate or estimate that information, retrieve what’s implied stated, and acknowledge either orally or nonverbally to erudition they’ve earned.
Answering occasions imparting literal and nonverbal intelligence that show attentiveness and perception or a shortage thereof. We convey verbatim and nonverbal feedback while the added character is speaking and later they are ingested. Assess the trustworthiness, completeness, and quality of an information ere responding with lexical and nonverbal beacons.
