Based on the results of this lab, write a short paragraph that summarizes how to distinguish physical changes from chemical changes.

How many moles are in 25 L of O2?

The embryo refers to an undeveloped animal or plant. True or false

The pressure of a gas is measured as 49 torr. Represent this pressure in both atmosphere and pascals.

Consider a hypothetical metal that has the following lattice parameters: α = β = γ = 90° and a = b = 0.298 nm and c = 0.480 nm.

An aluminum atom can lose 3 electrons on order to have a full outer energy level. What charge does the resulting aluminum ion have?

What is the oxidation number of iodine in KIO4? (1) + 1 (3) + 7 (2) - 1 (4) - 7

Which uses of iron are due to its chemical properties? Select two options. producing colored sparks in fireworks changing from liquid to gas at 2,862°C rusting in the presence of water and oxygen changing from solid to liquid if heated to 1,538°C

What type of sedimentary rock is formed from mechanical weathering debris

What type of energy travels in the form of electromagnetic waves?

At the same pressure, about 25 times more co2 will dissolve in plasma as o2. why does this occur?