I think the answer is B . I really hope that this helps you out.
We first need to convert grams of hydrogen chloride to moles.
molarity = moles of solute/liters of solution
To convert from grams to moles, we need to divide by it's molecular mass.
4.5 g HCl * (1 mole HCl/ 36.46 g HCl) = 0.123 moles HCl
0.12 moles/0.9 L = 0.13 M HCl
If they gave you the volume as 900 mL, then that would be 3 sig figs. And the sig figs would be limited to 2 because the mass.If, however, they gave you the volume as 0.9 L, then that would be 1 sig fig. And the final answer would be limited to to 1 sig fig.
Answer:
Option A (They happen as the Sun hits its maximum and minimum level throughout the sky) is the correct option.
Explanation:
- Solstice seems to be the moment whereas at noon this same sun achieved its maximum as well as minimum position, actually results throughout the year's shortest as well as biggest days.
- We currently believe that perhaps the solstice seems to be an apocalyptic event, exacerbated either by the tilt of the globe’s axis and therefore its direction of movement in an elliptical orbit. Globe's rotation not everyone's travel time from either the sun was what was causing winter or even just summer.
Some other options given should not be in accordance with the given context. So, the correct approach would've been option A.
Answer:
By the vibration of particles in a medium
Explanation:
For example, the energy in sound waves is transferred by the vibration of the molecules in air.
A is wrong. Electromagnetic radiation transfers energy through vibrating electric and magnetic fields.
B is wrong. Sound waves can transfer energy far from the ocean.
C is wrong. A combination of waves just makes a wave with a different shape.
