How many molecules are there in 2.3g of carbon

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.