When a substance cannot be reduced by physical or chemical means to a simpler form, it is an example of a (n):

mixture

molecule

element

compound

How many atoms of Cl are there in 25 moles of Cl (subscript) 2? Can someone show the work and explain this to me I'm so lost

Sketch 1s 2s 2p orbitals using the same scale for each

Determine the ph of 0.57 m methylamine (ch3nh2) with kb = 4.4 x 10-4 : ch3nh2 (aq) + h2o (l) ⇌ ch3nh3 + (aq) + oh - (aq)

What can't be changed chemically

How many hours are spent sleeping 33%

Which molecule is a source of energy, a store of energy, and can mix with water?

How many atoms will you find in 2.0 moles of he?

An atom of nitrogen has seven electrons. Which diagram correctly respresents the arrangement of these electrons?

A farmer has concerns about the nitrogen levels in her soils. What can she do to ensure that the nitrogen bacteria are replenished in the soil? Question 6 options: Clear cut the area surrounding the field.

The changing of gas to liquid