CHEMISTRY HIGH SCHOOL

Chemists use activity series to determine whether which type of reaction will occur?

Answers

Answer 1
Answer:

Answer:

The correct answer is "single replacement".

Explanation:

The activity series is a representation of a series of metals that are organized according to their order of reactivity. They start from the highest order of reactivity to the lowest order of reactivity.

The purpose of the series is to determine which products are formed in single-displacement reactions. The higher-order metals replace the lower order metals if there are two of them in the same solution. If metal is higher in the series it is more reactive than a metal that is below it in the activity series.

Have a nice day!

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What volume of a 2.00 M stock solution of NaOH is needed to prepare 150. mL of 0.40 M solution?

Answers

To find the volume ratios we say m1v1=m2v2

where m1 is the initial molarity, m2 the final molarity, v1 the initial volume, v2 the final volume.in this question m1=2.00M, m2=0.40M v2=150ml

Therefore the expression becomes:  2.00M×v1=0.40M×150mL

                                                           v1=(0.40M×150mL)/2.00M

                                                               =30mL

Order the following in terms of increasing radius:

Al, In, TI, B, Ga

Answers

Answer: B, Al, Ga, In, Tl



Explanation:

The process of breaking down of a chemical compound into its elements by chemical means is called: a) Analysis b) Synthesis c) Cracking d) None of the above

Answers

Answer:analysis

Explanation:

Which barium salt is insoluble in water?

Answers

Actually, there a lot of barium salt that is insoluble in water. These includes Barium sulfate, Barium phosphate, Barium carbonate, Barium sulfide. Sometimes it also depends on the nonmetal ion. It also includes. Barium Chromate, Barium Oxalate, all have insoluble combinations with Barium.

Which of the following is not required in a chemical reaction?a.
atomic nuclei
c.
products
b.
reactants
d.
energy

Answers

atomic nuclei:
The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. The atomic nucleuswas discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment.

Which of these would be easily soluble in water?a. salt
b. oil
c. aluminum foil

Answers

A) Salt, because salt can easily dissolve in water. Oil would not dissolve or evaporate in water (think of an oil spill - does that oil dissappear?). Aluminum foil would definitely not dissolve in water, so it is not soluble.

Answer:

salt

Explanation:

because is logic sense lol
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