Answer:
Organs make up Organ System and organ system makes organism
Explanation:
Answer:
Bicarbonate, the conjugate base of carbonic acid.
Explanation:
Answer:
24g of carbon
Explanation:
From Avogadro's hypothesis, we understood that 1mole of any substance contains 6.02x10^23 atoms. This gives us a background understanding that 1mole of carbon also contains 6.02x10^23 atoms.
1 mole of carbon = 12g
If 12g of carbon contains 6.02x10^23 atoms,
then Xg of carbon will contain 1.204 x 1024 atoms i.e
Xg of carbon = (12x1.204x10^24)/6.02x10^23 = 24g
Therefore, 24g of carbon contains 1.204x10^24 atoms
Answer:
2.21m
Explanation:
Molality, m, is defined as the ratio between moles of solute (The substance that is in less amount, sodium sulfide) and kilograms of solvent (Water, in this case).
Thus, we need to convert mass of sodium sulfide to moles using its molar mass and grams of water to kilograms:
<em>Moles Na2S (Molar mass: 78.0452g/mol):</em>
37.5g * (1mol / 78.0452g) = 0.48 moles Na2S
<em>Kilograms water:</em>
217g * (1kg / 1000g) = 0.217kg
Molality:
0.48 moles Na2S / 0.217kg =
<h3>2.21m</h3>
