(c) The student mixes two of the three liquids together, adds a few drops of concentratec sulfuric acid as a catalyst and warms the mixture. A sweet smell is produced.
(1) Name the two liquids that the student mixes.
(1

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

16

explanation:

the marks go by 4s

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante