Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Connect with professionals ready to provide precise answers to your questions on our comprehensive Q&A platform. Our platform offers a seamless experience for finding reliable answers from a network of knowledgeable professionals.
Sagot :
Since we already have the number of moles of He, we can discover how many atoms of He there are by using the relationship between moles and number of atoms, i.e.:
[tex]1\text{mol}=6\times10^{23}atoms[/tex]Since, in this case, the number of moles of He is 0.0025 moles, we can set the following proportion to discover the number of He atoms:
[tex]\begin{gathered} 6\times^{}10^{23}\text{atoms}-----1\text{mol} \\ x\text{ atoms---------- 0.0025mol} \\ x=\frac{2.5\times10^{-3}\times6\times10^{23}}{1}=15\times10^{20}=1.5\times10^{19}atoms^{} \end{gathered}[/tex]So, the number of He atoms in 0.0025 moles of He is 1.5x10^(-19) atoms.
Important remember: in this exercise, we did not have to use the volume because we already had the equivalent in moles. If we had only the volume, then we could use the molar volume at STP, 22.4 L/mol, to calculate the amount of moles.
We appreciate your visit. Hopefully, the answers you found were beneficial. Don't hesitate to come back for more information. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Get the answers you need at Westonci.ca. Stay informed with our latest expert advice.
