Part I: Build atoms and ions. https://phet.colorado.edu/sims/html/build-an-atom/latest/build-an-atom_en.html Following the above link to get into the site. There are three types of simulations within this virtual lab, Atom, Symbol, Game. You will build atoms and ions with "Symbol" Build an Atom 7 +1 Li He Atom 3 Game Symbol First, click "Symbol". Use the protons, neutrons, and electrons to build a }H atom, a ¿°F atom, a ¿º0²- ion, and a Li* ion. Next, take screen shots of the atoms and ions that you build. Make sure the protons, neutrons, and electrons that you used (upper right of the screen), and the symbol of elements (on the right side of the screen) are included within your pictures. Use the default model "Orbit" (Bohr's model) when you take the screen shot. You can switch the model to "Cloud" (quantum mechanics model) if you wish to see how it looks like. But don't take the screen shots within "Cloud" model. You will learn both Bohr's model and quantum mechanics model of atoms in Chapter 3 of Atom Frist (2nd edition).

On earth, tin has 10 different stable isotopes. The heaviest, 124 Sn makes up 5.80% of naturally occurring tin atoms. a) How many atoms of 124 Sn are present in 42.7 g of a natural sample of tin? 124 Sn: 1.491e24 atoms Scientific Notation: 1.491 x 1024 Helpful tip: To enter a number in scientific notation, enter 0E5 or 1.0e5, for 1.0 x 105 where the E# (or e# ) denotes 10# b) Considering 124 Sn has an isotopic mass of 123.905 amu, calculate the mass of this isotope in the sample. Mass: 8.0 g

Symbol Abundance in Nature Protons: Periodic Table Neutrons: Electrons: H. Не Li Be C Ne My Isotope Symbol Carbon-13 Abundance in Nature +1 Stable O Mass Number 13 Neutrons Atomic Mass (amu)

please answer this

Question 5 only

On earth, tin has 10 different stable isotopes. The heaviest, 124 Sn makes up 5.80% of naturally occurring tin atoms. a) How many atoms of 124 Sn are present in 21.9 g of a natural sample of tin? 124 Sn: atoms Helpful tip: To enter a number in scientific notation, enter 1.0E5 or 1.0e5, for 1.0 x 105 where the E# (or e#) denotes 10# b) Considering 124 Sn has an isotopic mass of 123.905 amu, calculate the mass of this isotope in the sample. Mass: 8.0 g

Please try to solve the questions 3 and 4 on the picture