<span>All
the organisms would reduce in their population.
The sun is the source of the <span>energy that goes up
a food chain. This energy is converted to biomass by primary producers through photosynthesis.
Through interactions such as predation, this energy goes up the food chain from
the primary, secondary and tertiary consumers.
Therefore, if the sun stopped shining, there would be no energy for the food
chain.</span></span>
Answer:
I think D.
Explanation:
The substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more different the properties are, the easier it is to separate the substances.
Answer:
A. Chemical
- AA battery contains chemical energy
<span> 52.0ml of 0.35M CH3COOH : 0.052 L(0.35M) = .0182 mol of CH3COOH.
</span>
<span>31.0ml of 0.40M NaOH : .031 L(0.40M) = .0124 mol of NaOH.
</span>
<span>After the reaction, .0124 Mol CH3COO- is generated and .058 mol CH3COOH is left un-reacted. The concentration would be 12.4/V and 5.8/V, respectively. Therefore:
</span>
<span>pH = -log([H+]) = -log(Ka*[CH3COOH]/[CH3COO-]) </span>
<span>= -log(1.8x10^-5*5.8/12.4) = 5.07</span>
