Answer:
All of the above are properties that rocks share
Explanation:
Answer:
115N
Explanation:
your friend and you push the car at the same time at the same direction so you add the force your friend is using and the force you’re using so: 60+55=115N
I disagree with this hypothesis, because, the rows only support how many valence electrons there are, but do not support the chemical reaction. However, the columns do. Each column on the periodic table is one group. These groups share similar chemical properties, and react similarly in reaction. In conclusion, the hypothesis is incorrect.
Hope this helped.
₈₄²¹⁰Po ⟶ ₈₂²⁰⁶Pb +
Your equation is:
₈₄²¹⁰Po ⟶ ₈₂²⁰⁶Pb + ?
It becomes easier to balance the equation if we replace the "?" with an element symbol _<em>x</em>^<em>y</em>Z.
Then the equation becomes
₈₄²¹⁰Po ⟶ ₈₂²⁰⁶Pb +_<em>x</em>^<em>y</em>Z
The main point to remember in balancing nuclear equations is that the <em>sums of the superscripts and the subscripts</em> must be the same <em>on each side of the equation</em>.
Sum of superscripts: 210 = 206 + <em>y</em>, so <em>y</em> =4.
Sum of subscripts: 84 = 82 + <em>x</em>, so<em> x</em> = 2.
₈₄²¹⁰Po ⟶ ₈₂²⁰⁶Pb +
We should recall that is an <em>α particl</em>e.
Thus, the equation represents the α decay of polonium-210 to lead-206.
The nuclear equation is
₈₄²¹⁰Po ⟶ ₈₂²⁰⁶Pb +