Answer:
Electrons are particles that surround the nucleus of an atom like a cloud. As with protons and neutrons, electrons are essential to an atom's structure.
Answer:
A chemical change occurs when the reactants chemical compositions have changed
Explanation:
a change in colour, change in temperature, change in smell, formation of a precipitate, or the formation of gas bubbles
Hopes this helps
The outer electrons of an element are called the valence electrons. They help make an element stable.
Cesium : 1 valence electron<span>.
Magnesium : 2 valence electrons</span>
Answer:
Answer is 72.15 or 0.07215
Explanation:
Given,
Initial molarity M1 = 3.21M
Initial volume V1 = 25.4mL
Final molarity of M2 = 1.13 M
Final volume V2 = ?
M1×V1=M2×V2
M1×V1/M2=V2
3.21M×25.4/1.13=V2
V2=72.15 mL. 1 mL=0.001 L
V2= 0.07215
