Removing the alligators will cause the smaller animals to increase in population causing the grasses, plants they eat to began to decrease because they can’t produce fast enough
If you look at the periodic table, underneath each element it give you the atomic mass, which has the units g/mol. So CO2 have a molecular mass (MM) of those combined atomic masses.
The MM for CO2 would be...
12.01 g/mol + 2(16.00 g/mol) = 44.01 g/mol
This can be used as a conversion to change from moles to grams.
8 mol * (44.01 g / 1 mol) = 352.08 g or 6 x 10 to the 2 g for the significant figures (sig figs) at are shown in your problem.
You may have just typed 8 instead of 8.0 or 8.00 which would change your sig figs. It is all important to right now all your zeros, since almost all chemistry calculations involve significant figures.
I solved the above equation using dimensional analysis and had to cancel out the units, in case this is your first chemistry class.
I hope I helped!
The atmosphere is a mixture of gasses.
Answer:
NiCl₂·4H₂O, its name being nickel (II) chloride tetrahydrate.
Explanation:
The constant mass achieved after heating is the mass of anhydrous nickel (II) chloride, NiCl₂. While the mass lost was water.
- Mass lost = 1.167 g - 0.750 g = 0.417 g
Now we <u>convert 0.750 g of NiCl₂ into moles</u>, using <em>its molar mass</em>:
- 0.750 g NiCl₂ ÷ 129.6 g/mol = 0.0058 mol NiCl₂
Then we <u>convert 0.417 g of H₂O into moles</u>:
- 0.417 g H₂O ÷ 18 g/mol = 0.0231 mol H₂O
With the above information we can calculate that the number of H₂O moles is 4 times higher than the number of NiCl₂ moles.
Meaning that <em>the formula of the hydrate is NiCl₂·4H₂O</em>, its name being nickel (II) chloride tetrahydrate.
The correct answer is a oxidizer
