45% - 144
100% - x
/cross multiply/
45x = 144·100
45x = 14400 |divide both sides by 45
x = 320
Answer: 45% of 320 is 144.
Answer:
2.97 g
Step-by-step explanation:
First convert mass to moles.
7.72 g Mg × (1 mol Mg / 24.3 g Mg) = 0.318 mol Mg
Use stoichiometry to find moles of nitrogen.
0.318 mol Mg × (1 mol N₂ / 3 mol Mg) = 0.106 mol N₂
Convert moles to mass:
0.106 mol N₂ × (28.0 g N₂ / mol N₂) = 2.97 g N₂
Answer:
For Soccer ball:
x = | 12. 05 + 3.55 |
For basketball:
x = | 8.00 + 0.5 |
For volleyball:
x = | 4.44 + 0.18 |
Step-by-step explanation:
Given the following :
Let x = ball's actual air pressure
_________avg Recommended psi ___tolerance
Soccer ball____ 12. 05 ____________+3.55
Basketball _____8. 00_____________+0.5
Volleyball _____ 4.44 _____________ + 0.18
Actual air pressure = | average recommended psi + tolerance |
Hence ;
For Soccer ball:
x = | 12. 05 + 3.55 |
For basketball:
x = | 8.00 + 0.5 |
For volleyball:
x = | 4.44 + 0.18 |
