From this story, you can infer that Penelope is LeA student makes a cross-section clay model to represent the internal structure of a volcano that leads to the formation of two rocks (X and Y). The student records the processes that affect the type of rock that is formed in a table. Which process(es) cause(s) the rock formed at location X to be different from the rock formed at location Y?

1 only
1 only

2 only
2 only

1 and 3
1 and 3

2 and 3
2 and 3

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

What is the polyatamic ion of thiosulfate

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)