Answer:
The correct answer is a.
Explanation:
The explosive reaction depends on the amount of gas dissolved in the magma and its viscosity.
Low-viscosity magmas allow gases to easily escape to the surface, reducing the likelihood of an explosive release. While high viscosity magnets retain the gases and increase the pressure producing a greater probability of an explosive release occurring.
This magma when it reaches high pressures and when it overcomes the resistance it encounters, escapes violently, giving rise to an explosive eruption.
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Answer:
a) Specific rotation of pure fructose = - 130°
b) Specific rotation of racemic fructose = 65°
Specific rotation of the racemic mixture = -65°
Optical purity = 50%
Explanation:
specific rotation = observed rotation/ (tube length in decimeters x concentration)
[α] = α/lc
Observed rotation, α = -5.2°
Tube length in decimeters, l = 2 decimeters (1 decimeter = 10cm)
Concentration in g/mL or g/cm³ = 10/500 = 0.02 g/mL
Specific rotation, [α] = -5.2/(2×0.02) = - 130°
b) The racemic fructose would rotate light in the opposite direction. If the two enantiomers have the same concentration, specific rotation of the racemic fructose would be -(-130°) = 130°, but the concentrations are different.
Concentration in g/mL or g/cm³ = 5/500 = 0.01 g/mL
At half of the concentration of optically pure fructose, specific rotation would be 0.5 × 130° = 65°
Total specific rotation of mixture = - 130° + 65° = -65°
Optical purity = (specific rotation of mixture/specific rotation of pure sample) × 100% = [-65/(-130)]× 100 = 50%
Hope this Helps!!!
For conversion of kPa and atm, the relationship is 1 atm = 101.325 kPa. So for 20000 kPa, the atm number is 20000/101.325=197.4 atm.
It's common for nails to be made of iron, which is a metal that rusts when it comes into contact with air. Exposure to the elements for a long time caused oxygen-iron reactions when there was moisture around. This caused a chemical reaction that made rust, which is made of iron oxide.
Here, the oxygen that mixed with the iron to make rust adds weight to the thing.
Answer:
Yes, it is due to the gravitational pull from the moon
Explanation:
The mass of Garfield didn't change during the flight, which is to say, the amount of matter in his body is the same on Earth as on the Moon.
However, <em>weight is a measurement of how strongly mass is pulled towards the ground, due to the gravitational pull.</em>
So even though Garfield's mass is the same, the weight is less due to the lower gravitational pull from the Moon compared to Earth (the weight is one-sixth of the original weight as gravity on the moon is about one-sixth of Earth's). When Garfield returns to Earth, the scale will still read 24 lbs.
