Moles = mass / molar mass
molar mass of O2 is 32
therefore moles = 72/32
= 2.25 moles
All of the above
Explanation:
Science is a methodical way of investigating the world around us in order to find out the truth and facts about them. Technology is the practical aspect of science.
- The knowledge and understanding of x-rays as part of the electromagnetic radiation made it possible to use the rays to study the internal structures of substances.
- The discovery of radioactivity has led to the development of nuclear energy that are produced in nuclear reactors.
- Satellites are built on the principles of science.
- Robotic machines are based on scientific studies and electricity originated from a good knowledge of the atom.
Learn more:
radioactivity brainly.com/question/10125168
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Question:
What would be the best way to increase the rate
of the reaction?
Answer:
D. She could make the original solutions at higher concentrations.
<h3>
Answer:</h3><h3>
</h3><h2>E. Coli </h2>
<h2>its a easy and faster answer to look at (;</h2>
Hey...
Use the molarity formula
M=moles/L and then convert to grams
0.07268*0.15=moles
<span>0.010902 mol
</span>Pb(NO3)2
1 mole=331.22g
0.010902 moles=
3.61 g
