Answer:
disulfur tetroxide
Explanation:
Since both sulfur (S) and oxygen (O) are nonmetals, the compound is covalent. In covalent compounds, the IUPAC name includes the names of both the elements. However, the element listed last (oxygen) needs the suffix -ide. Furthermore, there should be a prefix denoting the amount of each element. The subscripts give you these amounts.
As such, if there are 2 (di-) sulfur atoms and 4 (tetra-) oxygen atoms in the compound, the IUPAC name must be disulfur tetroxide.
Answer:
a. 30 mL
b. 6.9 g
Explanation:
Let's consider the following precipitation reaction.
Pb²⁺(aq) + 2I⁻(aq) ⇄ PbI₂(s)
<em>a. What volume of a 1.0 M KI solution must be added to 100.0 mL of a solution that is 0.15M in Pb²⁺ ion to precipitate all the lead ion?</em>
First, we will calculate the moles of Pb²⁺.
The molar ratio of Pb²⁺ to I⁻ is 1:2. Then, we have 2 × 0.015 mol = 0.030 mol of I⁻. There is 1 mole of I⁻ per mole of KI, so we also have 0.030 mol of KI. The volume of the 1.0 M KI solution is:
<em>b. What mass of PbI₂ should precipitate?</em>
The molar ratio of Pb²⁺ to PbI₂ is 1:1. Then, we have 0.015 mol of PbI₂. The molar mass of PbI₂ is 461.01 g/mol, and the mass corresponding to 0.015 moles is:
Answer:
Elements are all the subtances on the periodic table. Compound are elements that are fused by chemical means like potassium chloride. Mixture are elements that are not chemically fused but just in a sense mixed together.
Turmeric, vinegar, beetroot juice.
The correct answer is mountains
~ hope this helps! ❤️