On left, C l with 2 black dots each above, left, and below and 1 black dot right. On the right, C l with 2 black dots each above, right, and below and 1 black dot left. Chlorine, which is used to clean swimming pools, exists as two chlorine atoms covalently bonded to each other.

How many valence electrons does one chlorine (Cl) atom have?

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt

Which of the following is described by the equation h2o(s)+ heat=h2o(i) a freezing melting condensing evaporating

Give one example of a pure (exact) number and of an estimated (measured) number.