Convert all the gases from grams to moles using their molar masses first. Remember that nitrogen and oxygen exist as DIATOMIC gases.
O2 - 25 g / 32 g/mol = 0.78 mol O2
N2 - 15 g / 28.02 g/mol = 0.54 mol N2
He - 10 g / 4.0 g/mol = 2.5 mol He
Add all the moles of gases.
0.78 + 0.54 + 2.5 = 3.82 moles
Divide O2 moles by total moles.
0.78/3.82 = 0.20
<span>You have to use an activity series and then predict which metal by itself will replace the metal inside of the compound. These all appear to be single replacement reactions.</span>
Answer:
Liquids and gases flow easily because their particles can move or slide past one another.
Explanation:
Hope this helped Mark BRAINLEST!!
Acids
- Form Hydrogen ions when dissloved in water
- Have PH values below 7
- Increased hydrogen ions (H+)
- Lituns turns red
- Ex. Vinegar and Lemon
Bases
- Reduce the concentration of hydgoren ions in a solution
- PH valuse above 7
- Forms hydrogen (OH-)
- Litnus turns blue
- Ex. Antiacid, Hand Soap, and Ammonia
Both
- Hydrogen ions
- Not Neutral
- Water Based
