The mass of a solid copper penny is 3.46 g. how many copper atoms are in the penny?

Solve the triangle. A = 50°, b = 13, c = 6 choices: a ≈ 10.2, C ≈ 26.3, B ≈ 103.7 a ≈ 14, C ≈ 26.3, B ≈ 103.7 No triangles possible a ≈ 14, C ≈ 30.3, B ≈ 99.7

Is chromium plus nickel an element, compound, homogeneous or heterogeneous?

What is the molarity of a solution that contains 75.0 g of KNO, dissolved in 0.350 L of solution?

Is true about how hydrogen and oxygen can combine to form molecules?

Select the pair of elements that is most likely to form an ionic bond. A. hydrogen and helium B. lithium and potassium C. potassium and iodine D. iron and zinc

How many Mg atoms are present in 170g of Mg

The kinetic theory assumes that collisions of gas particles are perfectly elastic. What does this statement mean?

Roger believes that he is following a healthy regime by taking lots of vitamin E everyday. What property of vitamin E makes Roger's practice potentially unhealthy?

A 68-kg man whose average body temperature is 39°C drinks 1 L of cold water at 3°C in an effort to cool down. Taking the average specific heat of the human body to be 3.

As longitudional waves travel, particles in the medium are pushed together and then pulled apart. we call this