I y due HH.2 Choose metric units of distance, mass, and volume 370
How long is a walk across Central Park in New York City? Select the best estimate.
1.2 kilometers
2.2 millimeters
3.2 meters
4.2 centimeters

Answer) by studying proton collisions hope this : )

The answer is c) pyrite

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na