T = 20 % : 20 / 100 = 0.2
m1 = solute
m2 = Solvent
T = m1 / m1 + m2
0.2 = 500 g / 500 g + m2
0.2 * ( 500 + m2 ) = 500
0.2 * 500 + 0.2 m2 = 500
100 + 0.2 m2 = 500
0.2 m2 = 500 - 100
0.2 m2 = 400
m2 = 400 / 0.2
m2 = 2000 g of water
hope this helps!
Answer:
4.52×10^24
Explanation:
N = n × Na
where; N = no. of bananas
n = no. of moles
Na = Avogadro's constant
Which is 6.02×10^23
N = 7.5 × 6.02×10^23
N =4.515×10^24
The answer is actually C. endorphins. during regular exercise, the pituitary gland and central nervous system produce endorphins
Answer:
0.0478 L
Explanation:
Given data
- Initial volume (V₁): 1.91 L
- Initial pressure (P₁): 1.00 atm
- Final pressure (P₂): 40.0 atm
We can find the final volume of an ideal gas using Boyle´s law.
P₁ × V₁ = P₂ × V₂
V₂ = P₁ × V₁ / P₂
V₂ = 1.00 atm × 1.91 L / 40.0 atm
V₂ = 0.0478 L
The final volume is 0.0478 L = 47.8 mL.