The definition for "What do you call two or more atoms bonded together" is a compound. Think of water. Water is called H20. Water is made of 2 hydrogen atoms and 1 oxygen atom. That is to atoms bonded together to make a compound which is water. Hope I helped
First find the no. of moles of NaOH :
<span>30/1000 = 0.3 dm3 so no. of moles = 0.3*0.5 = 0.15 moles </span>
<span>as NaOH reacts with HNO3 in a ratio of one to one, there must have been 0.15 moles of HNO3 too </span>
<span>moles/volume = concentration </span>
<span>volume= 15/1000 = 0.15 dm3 </span>
<span>concentration = 1.15/0.15 = 1 mol.dm-3 </span>
<span>The quicker way would be to realize that you used twice as much NaOH so the HNO3 had to be twice as strong</span>
<u>Answer:</u> The amount of acetylene gas needed in the reaction is 2.00 moles
<u>Explanation:</u>
We are given:
Moles of water = 2.00 moles
The chemical equation for the reaction of acetylene with oxygen gas follows:
By Stoichiometry of the reaction:
2 moles of water is produced by 2 moles of acetylene gas
So, 2.00 moles of water will be produced by = 
of acetylene gas
Hence, the amount of acetylene gas needed in the reaction is 2.00 moles
In conclusion, modeling is very useful for predicting molecular polarity because chemical bonds among different atoms are generated to equal electrical charges.
<h3>What is molecular polarity?</h3>
Molecular polarity refers to the unequal distribution of electrical charges in the atoms of a molecule.
This unequal distribution leads to the generation of molecular poles (positive and negative) at the ends of the chemical bonds.
In conclusion, modeling is very useful for predicting molecular polarity because chemical bonds among different atoms are generated to equal electrical charges.
Learn more about molecular poles here:
brainly.com/question/18649956
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