Answer: potassium and rubidium
Explanation:
1) The group 1 of the periodic table contain six elements namely Lithium(Li), Sodium(Na),Potassium(K),Rubidium(Rb),Cesium(Cs) and Francium(Fr). These metals are called alkali metals because they form alkalies( i.e. strong bases capable of neutralizing acids) when they react with water.
2) The heavier alkali metals (K, Rb, and Cs) react so vigorously that they invariably explode.
3) This trend, which is not consistent with the relative magnitudes of the reduction potentials of the elements, serves as another example of the complex interplay of different forces and phenomena—in this case, kinetics and thermodynamics.
Answer:
That is incorrect, it's not all the the choices. The Answers are, A and D.
* The area was once a forest
* The area was probably covered by water
Explanation:
This is the answer for Earth science in Ed. I'm not sure if it's the correct answer on anything else but it should be. Hope this helped you out!
The unit for work is ENERGY
Sound moves 343 m/s now whats the distance of the string from the student?
To solve this problem, we use the formula:
C1 V1 = C2 V2
where C is concentration and V is volume
15% * 1000 mL = 65% * V2
V2 = 230.77 mL
<span>So about 230.77 mL of 65% stock solution should be diluted
with water to 1000 mL to make 15% solution.</span>