I believe the correct answer from the choices listed above is option C. The statement that describes the VSEPR theory would that e<span>lectron pairs in the valence shell of an atom exert a repulsive force on all other electron pairs in the valence shell of the atom. </span>
Answer:
2NaHCO3 + H2SO4 -----> Na2SO4 + 2H2O + 2CO2.
Explanation:
<span>Water soaks into it easily and during freeze-thaw cycles would be more likely to break apart because of the water freezing and thawing inside the rock. The water freezes and expands inside the rock, causing the surface to break off in flakes from the pressure of the expanding ice inside.</span>
Units to measure pressure are as follows
atm - atmospheric pressure units
kPa - kilo Pascals
mm Hg - milimeters Hg
conversion units are;
1 atm = 101 325 Pa
therefore 4.30 atm = 101 325 Pa / atm x 4.30 atm = 435.7 Pa
1 atm = 760.0 mm Hg
4.30 atm = 760.0 mm Hg / atm x 4.30 atm = 3268 mm Hg
answers are 435.7 Pa and 3268 mm Hg
