Help plz it's due Monday :( A) B) C) D) E) F) G)
H) I) J) K) L) M) N)

O) P) I need to identify whether they are compounds, elements, mixtures, a mixture of compounds, a mixture of elements, or a mixture of compounds & elements

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

Citric acid has a ph between 1 and 3.  it is considered to be aa. weak acidb. weak basec. strong based. strong acid

Rank the four gases (air, exhaled air, gas produced from from decomposition of h2o2, gas from decomposition of nahco3) in order of increasing concentration of co2