How many kilojoules of heat are required to heat 1.94kg of water from 52.4 to 148.5?

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?