E=hf
h=6.63*10^-34
f=8.66*10^14
E=6.63*10^-34*8.66*10^14=57.4*10^-20 joules
D. The energy released or absorbed during the reaction
Answer:
observe if it reacts with acids
Explanation:
Because whether it reacts is determined by its chemical properties
The volume of the brick in cubic meters is 0.00108 m³
<u><em>calculation</em></u>
<u><em> </em></u> volume of a brick =length x width x height
-length = 15 cm
width = 6.0 cm
height = 12 cm
volume is therefore= 15 cm x 6.0 cm x 12 cm =1080 cm³
convert 1080 cm³ into m³
that is 1 cm³ = 1 x 10^-6m³
1080 cm³ = ? m³
by cross multiplication
=[ (1080 cm³ x 1 x10^-6 m³) / 1 cm³] = 0.00108 m³
