Answer:
it will reach the house in 3 hours
Explanation:
20km x 3h = 60km
Answer:did you ever find the answer??
Explanation:
Answer:
is b
Explanation:
es la b porque estpy estudiando lo mismo
Answer:
4K + O2 ---> 2K2O
Explanation:
The valence of Potassium is +1
The valence of oxygen is -2
Thus, two atoms of potassium will attach with one atom of oxygen to form molecule of potassium oxide.
This can be written as
2K + O ---> K2O
However, this is not the balanced equation as oxygen exists as O2 molecule.
Thus, the balanced equation is
4K + O2 ---> 2K2O
All isotopes of the
same element have the same number of protons. Number of neutrons in different
atoms of the same element is free to vary. Since, different elements react
differently, different elements have different numbers of protons. Atoms with
the same number of protons and vary neutrons behave chemically similar. The
number of electrons in a neutral atom depends on the number of protons. All
chemical reactions involve transfer or sharing of electrons it stands to reason,
neutrons are NOT responsible for chemical reactivity. It's arguable whether
protons or electrons dictate chemical reactivity <span>certainly the
SUBATOMIC nuclear particle that dictates reactivity is the PROTON.</span>