The amount of matter in an object is said to be its mass. The SI base unit of mass is kilograms i.e.
.
The mass of the object =
(given)
For converting lbs to kg:

So, 
Hence, the mass of
object in kilograms is
.
The chemical reaction of magnesium and sodium hydroxide would yield magnesium hydroxide and sodium. The chemical reaction is expressed as:
Mg(s)+ 2NaOH(aq)→Mg(OH)2(s)+2Na
In ionic form,
Mg(s) + 2Na+ + 2OH−(aq)→Mg(OH)2(s) + 2Na
I think the answer is water and hydrochloric acid
Answer:
velocity
Explanation:
because he is going 30 miles west