Acetic acid, phosphoric acid, hydrochloric acid.
sodium bicarbonate, magnesium hydroxide, aluminum hydroxide
calcium carbonate, sodium bicarbonate, magnesium sulfate.
Answer:
a. Lead (Pb)
Am 100% sure
Hope it helps
please mark me as brainliest
Answer:
Choice number two: this element is malleable and ductile.
Explanation:
A modern periodic table can be split into three sections:
(from left to right)
- Metals,
- Metalloids, and
- Nonmetals.
Based on the descriptions, section A likely refers to the metals. Section B likely refers to metalloids. Section C likely refers to nonmetals.
Metals are malleable and ductile. They are good conductors of electricity.
The reason is that in a metal, the valence electrons do not belong to some specific atom. Rather, the metal cations share these electrons. The electrons are free to move around the metal and conduct electricity.
Ionic compounds like table salt are brittle. The reason is that when an ionic compound is deshaped, ions of the same charge come directly into contact with each other. That creates repulsion and cracks the crystal. In contrast, the metal cations in a metal won't come into contact with each other. Electrons would rapidly fill the gap between these cations, so the metal won't crack. That's why unlike ionic compounds, metals are malleable and ductile.
The melting points of metals can vary significantly. Indeed, the mercury (, a metal) is a liquid at room temperature. In contrast, tungsten (, also a metal) won't melt until it is heated to over .
Answer:
chemical equilibrium, condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs. A reversible chemical reaction is one in which the products, as soon as they formed, react to produce the original reactants.
Explanation:
chemical equilibrium is the state in which both reactants and products are present in concentrations which have no further tendency to change with time, so that there is no observable change in the properties of the system.
Nitrogen exists in the ocean in three redox states:
- In + 3 state as ammonium ion, NH4+
- In the 0 state as nitrogen gas
- In the +5 state as trioxonitrate (v) ion, NO3-
<h3>What are redox states?</h3>
The redox state of an element is the charge it appears to have in the free or combined state.
Nitrogen exists in the ocean in three redox states:
- In + 3 state as ammonium ion, NH4+
- In the 0 state as nitrogen gas
- In the +5 state as trioxonitrate (v) ion, NO3-
Therefore, the redox state of nitrogen varies in the ocean.
Learn more about redox state at: brainly.com/question/26263317