Answer:
d. it does all of that and even harms humans to some extent
let me know if its right
Answer:
Potassium
Explanation:
The description here fits potassium. Potassium is not found alone in nature as it is very reactive. Hence, it tends to occur in relation with other elements because of its high reactivity.
Because it is stated that it gives up its single valence electron, this shows that it belongs to group one of the periodic table. We might be tempted to think hydrogen is the correct answer. But it is interesting to note that hydrogen is not even supposed to be placed in group one at all. It is only placed there for convenience
Answer: There are 20.24 grams of 
in the solution if the molarity is 0.649 M.
Explanation:
Molarity equals number of moles in a liter of solution as follows.
and, 
Therefore, 
Now, putting values in the above formula as follows.
(convert the volume from milliliter to liter)
Thus, there are 20.24 grams of in the solution if the molarity is 0.649 M.
I'm thinking a hypothesis theory, form a guess and proceed to experiment your hypothesis, leading to a definate theory....
Answer:
turtles
Explanation:
Turtles eat frogs and no animal in the pond can consume a turtle
