n = m / M
m = n × M
Nitrogen (N2) - a gas is always with an index 2 if we don't have shown how many molecules are there
m (N2) = 4,5 mol × (2×14.007 g/mol)
m (N2) = 4,5 mol × 28.014 g/mol = 126.063g
if you don't solve with the decimals in class just replace 14.007 with 14
also if you haven't learned abour gasses aways having index 2 then:
m (N2) = 4,5 mol × 14.007 g/mol = 63.0315g
Answer:
Some (most) has two tails.You can see the tails when the comets go near the sun.There are two types of comet tails,dust and gas ion. Comet tails can be over 600,000 miles (1 million km) long.Because the comet dust particles are so small, they are pushed away from the Sun into a long tail.They are made of ices, such as water, carbon dioxide, ammonia and methane, mixed with dust.There are so much more to discover about comets (which I might not know).
Hope that was helpful.Thank you!!!
Answer:
Newton's law of universal gravitation. Newton's law of gravitation, statement that any particle of matter in the universe attracts any other with a force varying directly as the product of the masses and inversely as the square of the distance between them.
Explanation:
That's the definition hope it helps.
