Atomic Number-6
Mass Number-14
<span>Triethylamine is only slightly soluble in water above 18.7 degrees Celsius!</span>
Answer:
D) 152 g
Explanation:
a mass of 1 mol Cr2O3 = 2 × 52 + 3 × 16 = 152 g number of moles of Cr2O3.
Answer:
the energy value of the olive oil kJ/g = 36.880 KJ/g
Explanation:
we can calculate energy gained by the water which generated by the reaction from this formula :
Q = mc∆t
where:
m is the mass of water= 370 g
c specific heat of water = 4.184 J/g·°C
∆t is the change or difference in temperature in °C = 38.9 - 22.7 = 16.2 °C
by substitution:
Q = 370g * 4.184 J/g.°C* 16.2°C
= 25078.896 Joule
the energy value of the olive oil = Q / mass of olive oil
= 25078.896 Joule/ 0.68 g
=36880 J/g
= 36880 / 1000 = 36.880 KJ/g
