The answer is C Becuz D is a compound and that is the only answer that says it
Answer:
Maryland is a Mid-Atlantic state in the United States that is characterized by abundant waterways and coastlines.
The effects of climate change in Maryland include rising sea levels, summer heat waves, and more frequent and violent thunderstorms.
These changes affect the citizens of Maryland, their livelihoods and also the economy of the state.
Because it is a solid material, it is known as a dry lubricant. This is useful inapplications<span> where “wet” lubricants, such as oil, cannot be </span>used<span>. </span>Graphite<span> is the only non-metal element that is a good conductor of electricity. Natural </span>graphite<span> is </span>used <span>mostly in what are called refractory </span><span>applications</span>
Molar mass KCl = 74.55 g/mol
Number of moles:
mass KC / molar mass
149 / 74.55 => 1.998 moles
Volume in liters: 500 mL / 1000 => 0.5 L
Therefore:
M = moles / volume
M = 1.998 / 0.5
M = 3.996 mol/L⁻¹
solar wind: gives comets their tail
solar flares: a big explosion on the surface of the sun
sunspots:every 11 years there is a peak in the number of them
