Given the reaction: Zn(s) + 2 HCl(aq) → Zn2+(aq) + 2 C1-(aq) + H2(g)
If the concentration of HCl(aq) is increased, the
frequency of reacting collisions will
a) decrease, producing a decrease in the reaction rate
b) decrease, producing an increase in the reaction rate
c) increase, producing a decrease in the reaction rate
d) increase, producing a increase in the reaction rate

Which of the following mining methods disrupts the sea floor?

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants