Answer:
Nucleic acid is an important class of macromolecules found in all cells and viruses. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins.
A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.
n = m / M
Where, n is moles of the compound (mol), m is the mass of the compound (g) and M is the molar mass of the compound (g/mol)
Here, the given ethanol mass = 50.0 kg = 50.0 x 10³ g
Molar mass of the ethanol = (12 x 2 + 1x 6 + 1 x 16) g/mol
= 46 g/mol
Hence, moles in 50.0kg of ethanol = 50.0 x 10³ g / 46 g/mol
= 1086.96 mol
Answer:
1: marine
2:rainforest
Temperate deciduous forest
taiga
tundra
desert
Explanation:
The Environmental Protection Agency suggests using cold tap water for cooking instead of starting with warm tap water is because our drinking water is made out lead pipes, which is a serious risk to health.
Explanation:
- Lead is found throughout the environment in lead found in paint, air, soil, food and water.
- Lead can pose a significant risk to your health if too much of it enters your body.
- Lead enters drinking water primarily as a result of the corrosion.
- It also contains in materials containing lead like in the water distribution system and household plumbing.
- Lead in drinking rarely cause of lead poisoning can significantly increase a person’s total lead exposure.
- In particular the exposure of infants who drink baby formulas and concentrated juices that are mixed with water.
- EPA estimates that drinking water can make up to 20% or more of a person’s total exposure to lead which is dangerous.
