No I do not have the answers
Answer:
The moon's surface has been struck with other objects.
Explanation:
Answer 1 - Craters are not a sign of alien life as there is nothing directly showing the crater's are not natural phenomena.
Answer 2 - Craters are (normally) produced by the impact force of a foreign object that is moving quickly and collides with an object of larger size.
Answer 3 - Volcanos form mountains and magma tubes, not craters.
Answer 4 - The formation of mountains does not relate to craters in any meaningful way.

multiply by (6.02 times 10^23 atoms)/(1mole, cancel out atoms)
Answer:
<h2>15.72 cm³</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula

From the question we have
mass = 45.6 g
density = 2.9 g/cm³

We have the final answer as
<h3>15.72 cm³</h3>
Hope this helps you
NaHCO3 is a product of a strong base and a weak acid reaction. Thus it has weak basic properties.
HCO3- ion is actually amphoteric, which means it can act as a base or an acid. But it is weaker than a strong acid or a strong base.
<span>HCO3- is amphoteric meaning it acts both as a B.L. Acid and a B.L. Base.. which is why it's used to neutralize both acid and base spills in the lab.</span>