Copper is one of a group of metals called the coinage metals. How many atoms of copper (Cu) are in a pure copper coin weighing 12.0 g?

A concentrated solution of compound A in the same solvent was diluted from an initial volume of 2.00 mL to a fi nal volume of 25.00 mL and then had an absorbance of 0.733. What is the concentration of A in the concentrated solution?

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In Hooke's law, what does k represent? A. the distance the spring stretches B. the elastic constant, a number that tells the relative strength of the spring C. the constant of gravity D. the amount of force acting on the spring

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State the importance of Nitrous oxide

When the equation ZnS+O ZnO+SO isbalanced the coefficientof O is 1, 5, 3, or2

Radioactive elements decay at a know rate known as half-life. Choose all of the correct statements concerning half-life. Carbon-14 has a half-life of 5,730 years. A 30 gram sample will be 10 grams after 5,730 years.

I am the most reactive metal in Period 4.

Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. titanium tetrachloride (ticl4) is extracted from titanium oxide using chlorine and coke (carbon). if you begin with 1.

Complete the following statements about the functions of the digestive system. The starts an involuntary swallowing action when it senses food. The squeezes food down the digestive tract by an involuntary synchronized muscle movement called.