A student takes a bottle of cold water from the refrigerator and leaves it on the counter. Ten minutes later, the student noticed there is now water on the outside of the bottle. What scientific phenomenon explains the water on the outside of the bottle? A.
Condensation because the temperature of the air nearest the bottle increased causing water droplets to form.

B.
Evaporation, because the temperature of the air nearest the bottle increased causing the water droplets to form.

C.
Condensation, because the temperature of the air nearest the bottle decreased causing the water droplets to form.

D.
Evaporation, because the temperature of the air nearest the bottle decreased causing the water droplets to form.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Consider three unlabeled bottles, each contain small pieces of one of the following metals. - magnesium - sodium - silver the following reagents are used for identifying the metals. - pure water - a solution of 1.0 molar hcl - a solution of concentrated hno3 (a) which metal can be easily identified because it is much softer than the other two? describe a chemical test that distinguishes this metal from the other two, using only one of the reagents above. write a balanced chemical equation for the reaction that occurs. (b) one of the other two metals reacts readily with the hcl solution. identify the metal and write the balanced chemical equation for the reaction that occurs when this metal is added to the hcl solution. use the table of standard reduction potentials (attached) to account for the fact that this metal reacts with hcl while the other does not. (c) the one remaining metal reacts with the concentrated hno3 solution. write a balanced chemical equation for the reaction that occurs. (d) the solution obtained in (c) is diluted and a few drops of 1 m hcl is added. describe what would be observed. write a balanced chemical equation for the reaction that occurs.

Find the mass in grams of 1.37x1020 particles of h3po4