Answer:
1,15mL = V₂
Explanation:
Based on Charle's law the volume is directely proportional to the absolute temperature in a gas under constant pressure. The equation is:
V₁T₂ = V₂T₁
<em>Where V is volume and T absolute temperature of a gas where 1 is initial state and 2, final state.</em>
The V₁ is 1.23mL
T₁ = 32°C + 273.15 = 305.15K
T₂ = T₁ - 20°C = 285.15K
Replacing:
1.23mL*285.15K = V₂*305.15K
<h3>1,15mL = V₂</h3>
<em />
2 C₁₇H₁₉NO₃ + H₂SO₄ → Product
Moles of H₂SO₄ = M x V(liters) = 0.0116 x 8.91/1000 = 1.033 x 10⁻⁴ mole
moles of morphine = 2 x moles of H₂SO₄ = 2.066 x 10⁻⁴
Mass of morphine = moles x molar mass of morphine = 2.066 x 10⁻⁴ x 285.34
= 0.059 g
percent morphine =
![\frac{mass of morphine}{mass of opium} x 100](https://tex.z-dn.net/?f=%20%5Cfrac%7Bmass%20of%20morphine%7D%7Bmass%20of%20opium%7D%20x%20100)
=
![\frac{0.059}{0.685} x 100](https://tex.z-dn.net/?f=%20%5Cfrac%7B0.059%7D%7B0.685%7D%20x%20100%20)
= 8.6 %
Answer:
Explanation:
When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.
So the correct answer is True
Answer: The Answer is C.
Explanation: The Nucleus only makes up less than .01% of the volume of the Atom. The Nucleus does contain more than 99.9% of the mass of the Atom. I hope that this helps you! Good luck!