The answer is #2 ²²²²²²²²²²²²²²²²²²²²²²²²
<span>19 kg.
The balanced equation is
4NO2(g)+O2(g)+2H2O(l) ==> 4HNO3(aq)
Determine the molar mass of NO2 and HNO3.
Atomic weight nitrogen = 14.0067
Atomic weight hydrogen = 1.00794
Atomic weight oxygen = 15.999
Molar mass NO2 = 14.0067 + 2 * 15.999 = 46.0047 g/mol
Molar mass HNO3 = 1.00794 + 14.0067 + 3 * 15.999 = 63.01164 g/mol
moles NO2 = 14000 g / 46.0047 = 304.3167329 mol
Looking at the balanced equation
4NO2(g)+O2(g)+2H2O(l) ==> 4HNO3(aq)
it's obvious that each mole of NO2 will produce one mole of HNO3. So we should have 304.3167329 moles worth. Just multiply by the molar mass.
304.3167329 mol * 63.01164 g/mol = 19175.49642 g = 19.17549642 kg
Since our data only has 2 significant figures, round to 2 figures, giving 19 kg.</span>
Answer:
Option C, ensure that mating occurs between members of the same species.
Explanation:
Courtship is a special form of behaviour that is performed by both the male and female organism belonging to a common species so that fertilization is established in female organism.
This special behaviour helps the two organism of opposite gender to identify the right mating partner for them.
This essential to ensure that two organism belonging to the same species must mate together in order to produce fertile and viable offspring.
Hence, option C is correct
Less emissions because they have less services to provide and less accommodation, employment and public transport
