You have a 5.0 L balloon that you bought in Denver(0.85 atm). If you take
that balloon back to sea level, where the pressure is 1.0 atm, what will the
new volume of the balloon be?

New volume of the balloon at sea level (V1) = 4.25 L

Explanation:

Given:

Present volume (V) = 5 L

Present pressure (P) = 0.85 atm

Pressure at sea level (P1) = 1 atm

Find:

New volume of the balloon at sea level (V1) = ?

Computation:

According to  Boyles law:

⇒ P × V = P1 × V1

⇒ 0.85 × 5 = 1 × V1

⇒ 4.25 L = V1

New volume of the balloon at sea level (V1) = 4.25 L

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).