Answer:
potassium and sodium
Explanation:
because they are the highest in the reactivity series
Answer and explanation:
On a flat, smooth surface, such as a flat mirror, all rays that strike the same direction will be reflected at the same angle.
Parallel rays that fall on a flat surface will remain parallel after reflection. The reflection on these smooth surfaces is called specular reflection.
When the surface is irregular, such as a curved or rough surface, the rays that appear at different positions on the surface arrive at different angles of incidence, because there are normal changes along the surface.
The angle of reflection remains the same as that of incidence, but they are reflected at different angles for those looking at the surface. This type of reflection is called diffuse reflection.
Answer:
2M
Explanation:
Given parameters:
Number of moles of FeCl₃ = 0.3 moles
Volume of water = 150mL
Unknown:
Molarity of solution = ?
Solution:
The molarity of a solution is the number of moles of solutes in a given solution. It is one of the ways of expressing concentration. The unit is always M i.e mol/dm³.
Molarity =
Express the volume in dm³;
150mL gives 0.15dm³
Molarity =
= 2M
A the nucleus emits partials and or energy
Answer:its elliptical orbit and the tilt on its axis its distance from other planets and the tilt on its axis the tilt on its axis and its distance from the moon its distance from the moon and its elliptical orbit
Explanation: