When an atom gives off energy in the form of light, a. it becomes excited. b. it becomes more stable. c. it returns to ground state. d. both b & c e. none of the above.

The balanced redox reactions for the sequential reduction of vanadium are given below. reduction from + 5 to + 4: 2 VO2 + (aq) + 4 H + (aq) + Zn (s) → 2 VO2 + (aq) + Zn2 + (aq) + 2 H2O (l) reduction from + 4 to + 3: 2 VO2 + (aq) + Zn (s) + 4 H +

After 10 years, 75 g of an original sample of 100 g of a certain radioactive isotope has decayed. the half-life of the isotope is

The kinetic molecular theory describes the behavior of gases in terms of particles in?

What are the diaganol relationship between lithium and magnesium?

What is the change in atomic mass number when an atom emits an alpha particle?

Give 3-5 pieces of evidence to support why cloning is bad.

Nitrogen combines with oxygen to form nitrogen monoxide (no) and nitrogen dioxide (no2). a sample of no consists of 1.14 g of oxygen and 1 g of nitrogen.

The modern periodic table reflects many improvements to Mendeleev's original table. If Mendeleev's table was incorrect, why is it still studied in chemistry classrooms today?

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Explain how the nettle is adapted for defence and protection