Explanation:
Elements in the same group have same number of valence electrons. And we know, the elements which have same number of valence electrons, have similar physical and chemical properties. Hence, the elements in the same group have similar physical and chemical properties.
Answer:
During a total lunar eclipse, the Earth lies directly between the sun and the moon, causing the Earth to cast its shadow on the moon.
Explanation:
Answer:
The force of the gases pushes downward at the same time that the gases push the rocket upwards. 1.
Explanation:
HBr is the formula for hydrobromic acid
<span>e = mc^2
m = e / c^2
Plug in your numbers in the appropriate units.
</span><span>m=1.02 × 10^-5
pulled from another response, hope it helps</span>
