Q = ?
Cp = 0.397 J/ºC
Δt = 40.3 - 21.0<span> => 19.3</span><span> ºC</span>
m = 15.2 g
Q = m x Cp x Δt
Q = 15.2 x 0.397 x 19.3
Q ≈ 116.46 J
<span>hope this helps! </span>
4
Numbers above zero are significant, as well as any zeros that appear in between two non-zero numbers.
Periodic table!
The periodic table organizes elements by their chemical properties (mainly through vertical columns known as groups) and increasing atomic number.
Answer:
B.
Explanation:
Increased stability in fluoride ion.
