Answer:
I could create a slower reaction because the particles might be moving slower due to the cold. if it was warm there will be a faster reaction. similar to the elements movements in solids and liquids.
Answer:
1. What is the coefficient for calcium in the balanced equation?
2 Ca + 5 NaOH → 4 Na + 2 Ca(OH)2
2. The burning of 20.0 g of acetylene (C2H2) produces what mass of carbon dioxide? You must
write the equation, balance it and solve the mass-mass problem.
a. Balanced equation:
2 C2H2 + 5 O2 4 CO2 + 2 H2O
Explanation:
The chemical equation would be:
2NO(g) + O2(g) --> 2NO2 (g)
<span>At equilibrium state, the partial pressure of the gases would be as follows : </span>
<span>NO = 522 - 2x </span>
<span>O2 = 421 - x </span>
<span>NO2 = 2x </span>
<span>- - - - - - - - - - - - -</span>
<span>943 - x = 748 </span>
<span>x = 195</span>
Calculating for Kp,
<span>Kp = (NO2)^2/ ((NO)^2 * (O2)) </span>
<span>Kp = (2 * 195)^2/ ((522 - 2 * 195)^2 * (421 - 195)) </span>
<span>Kp = 0.0386 </span>
Boiling point is the temperature at which vapour pressure equals atmospheric pressure.
As, we move at higher altitudes, atmospheric pressure decreases. Hence, temperature to reach the boiling point will decrease.
Further, boiling point is higher for longer chain compounds. Hence,<span> octane (C8H18) and octanol (C8H17OH) will have higher boiling point as compared to hexane (C6H14). Further, intermolecular forces of interaction are more stronger in octanol, due to presence of OH group, as compared to octane.
Hence, boiling points will be in following order:
Octanol > Octane > Hexane
Thus, hexane will boil first, followed by octane and lastly octanol.</span>
Whether an element is classified as a major or as a trace mineral is determined by
"<span>
the amounts daily required by the body".
</span>
Calcium, magnesium,
phosphorus, potassium, chloride and sulfur are all examples of the major
minerals and these are the minerals a body needs in large quantity as opposed
to include iron, copper, zinc, manganese, fluoride, selenium and cobalt, which
are all trace minerals and are needed in very little quantity.
<span> </span>
