Answer:What are the two half reactions that show how many electrons are gained or lost by each species in the reaction:
Ni2+(aq) + Mg(s) → Ni(s) + Mg2+(aq)?
atoms cannot be created or destroyed in a chemical reaction
Answer: Work was 15 Joules
Explanation: Work W = force F · distance s
W = 5 N · 3 m
Answer:
MgS is the formula and Magnesium sulfide is compound name
Explanation:
Answer:
4.9 × 10²³ molecules
Explanation:
Given data:
Number of molecules = ?
Number of moles of oxygen = 0.815 mol
Solution:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ molecules
0.815 mol × 6.022 × 10²³ molecules / 1 mol
4.9 × 10²³ molecules
Answer:
Halogens
Explanation:
Fluorine and Chlorine are gases at room temperature.
Bromine is a liquid at room temperature.
Tennessine, Iodine, and Astatine are all solids at room temperature.
