B, kilo stands for thousand so 1 KILOmetre is = to 1000 metres
C decreases by a factor of 3
Mg + 1/2 O2 → MgO
1 mol = 24 g of Mg
X mol = 12 g of Mg
x = 0.5 moles of Mg
Mg :MgO = 1:1 (coefficient from equations using mole ratio)
So
0.5 moles of MgO
1 mol MgO = (24+16) g = 40 g
0.5 moles of MgO = 0.5 × 40
= 20 g of MgO produced
<span>The 17 Cl 37 nucleus has
37 nucleons. Thus, making the energy per nucleon is 1.6944 x 10^-19 J/37
nucleons. </span>Energy =
5.09x10^-11 J. So, (5.09x10^-11)/37 nucleons you get a 1.38x10^-12
J/nucleon as an answer.
<span>I hope this helps you
with your problem.</span>
\I believe the direction of the osmosis will be towards the 9% sucrose solution from the 1% solution as this is the common movement from the lesser concentration to the stronger concentration in osmosis between two liquids.