i need help with these calculations in the block.

Erbium (ET) 126.0371 Sodium (Na) 3.0926 Your choice Tungsten (W) S1.6 691 Fe (Irow) 20.2940 Mass (8) Molar Mass (g/mol) Moles of each element Atoms of each element culate Molar Mass, you will need to have a periodic table. Find the element on the periodic table t the bottom of the block for that element, you should see a number, this represent the Molar of that element. For example, sodium has a mass of 22.99 g/mole. lculate the moles of the element, you will use the mass you collected in the lab and the molar mass ot from the periodic table. Shown is an example for sodium 15.928 g Na 1 mole Na 22.99 g Na = 0.69282 mole Na answer is reported to 5 significant figures because of the measured value. The molar mass is a ersion factor and does not play a role in the determination of significant figures. alculate the number of atoms, you will use Avogadro's number, 6.02x10%. 0.69282 moles Na 6.02 x 102 atoms = 4.1708 x 1023 Na atoms 1 mole unting Molecules instructions 1. Start Virtual ChemLab. Once the program opens, click on Workbook. Select 2-6 to 2-10 and select 2-9, Counting Molecules. This will take you into the lab. 2. The first thing you need to do is get your sample. You will do this by entering the stockroom by clicking on the stockroom window. You should see shelves with chemicals on them. On the Organics shelf, find the bottle containing sugar (C12H2O) and drag it to the counter. Click the Return to Lab arrow to return to the laboratory. 3. Drag the bottle to the spotlight near the balance and click on the Balance area to zoom in. Just like before, place a piece of weigh paper on the balance pan and tare the instrument. 4. Open the bottle of sugar. Grab the scoop and hold it near the bottle. As you drag the scoop down the bottle, you will see a sample of the sugar will appear on the scoop. Select the largest to the balanse over the weigh paper. Let it go. Repeat this until