What is the total number of protons in the nucleus of an atom of potassium-42?

(1) 15 (3) 39

(2) 19 (4) 42

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Fusion and radioactive decay are both types of nuclear processes. What does nuclear mean in this context

How many protons neutrons and electrons does nitrogen 14 have?

In a heat engine, if 700 J of heat enters the system, and the piston does 400 J of work, what is the final internal (thermal) energy of the system if the initial energy is 1,200 J?

What is the abbreviated electron configuration of cobalt?

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Name the following compound HClO

Aluminum and Oxygen gas will react to form Aluminum Oxide (Al2O3). When the equation is balanced, How many moles of Al2O3 are formed when a mixture of 0.36 moles Al is ignited? a. 0.12 b. 0.18 c. 0.28 d. 0.46

Which state of the West produces the widest varieties of fruits, vegetables, and nuts? A) California B) Colorado C) Wyoming D) Alaska

A chemical engineer for a fertilizer company is determining the most efficient way to produce ammonia. the engineer carries out the haber reaction under four different conditions.