Clorox, Windex, and Wd-40
Some bacteria use oil as their source. Before the oil spill waters of gulf has many bacteria of different phyla, immediately after the spill the bacteria of several phyla became less whereas bacteria of a particular phyla has increased. This shows that several phyla of bacteria were sensitive to bacteria whereas some able to persist the high doses of oil. Scientists after research identified the bacteria which is growing in the presence of oil and found that some bacteria feed on aromatic compounds which are very hard to break. Some examples of these bacteria are Colwellia, Neptuniibacter etc. Dispersants are used when workers want to stop the oil from spreading to a covered area like harbour or marsh. These dispersants are useful because oil is moved away from the habitat of the marine animals. The dispersant-oil mixture was colonised rapidly and was broken down by the bacteria that sunk towards the bottom. The dispersants helped the bacteria by exposing more oil to them.
Answer:
The mass of 8.250 moles of Cu2O is 1180.5g
Explanation:
HOW TO CALCULATE MASS OF A SUBSTANCE:
- The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:
Mass (g) = no. of moles (mol) × molar mass (g/mol)
- Molar mass of copper (I) oxide (Cu2O) = 63.5(2) + 16 = 143.09 g/mol
Mass of Cu2O = 8.250 mol × 143.09 g/mol
Mass of Cu2O = 1180.5 g
Therefore, the mass of 8.250 moles of Cu2O is 1180.5 g.
Answer:
a) V air/day = 8640 L air an adult breaths / day
b) 0.0181 L CO intake a person / day
Explanation:
a) one average person has 12 breaths for min:
in each breath it take an average of 500 mL on air.
⇒ 12 breath / min * 500mL air / breath = 6000 mL air / min
the average air volume per day of a person is:
⇒ Vair/day = 6000 mL air / min * (60 min / h) * ( 24 h / day ) = 8640000 mLair / day * ( L / 1000 mL)
⇒ V air / day = 8640 L / day
b) 2.1 E-6 L CO / L air * 8640 L air / day = 0.0181 L CO / day
