Answer:
The correct answer is option C, that is, has an irritating odor and is colorless.
Explanation:
Sulfur dioxide refers to a gas. It has a nasty, sharp smell and is invisible. It associates with other components to produce harmful compounds like sulfurous acid, sulfuric acid, and sulfate particles. It is the chemical compound with the formula SO. At standard temperature, it is a toxic gas with an irritating and pungent smell. The gas is released naturally by the volcanic activity.
Answer:
<em><u>= 0.1 M </u></em>
Explanation:
450mL = 0.45L
If 24g of a solute are weighed by 1 mole of solute
1.2g of a solute will be weighed by ( 1.2 ÷ 24 )
=<u> 0.05 moles of a solute.</u>
0.45L of a solution are occupied by 0.05 moles
1L will be occupied by ( 1÷0.45 ) × 0.05
= 0.1 M
Answer: Communicating results to others
The same is true for scientific researching.
Explanation:
Answer: B. Algae are an r-selected species because they have a very rapid growth phase.
Reasoning: r-selected species are those that emphasize high growth rates.
The correct answer is that a pure substance cannot be physically broken down into different types of atoms.