What can we say about the number of protons compared with the number of electrons in any atom - explain why this is.

Ar (g) is placed in a 3.80 L container at 320 K. The gas pressure is 0.496 atm.

Which element is malleable and can conduct electricity in the solid phase? 1) idine 2) phosphorus 3) sulfer

What would form a solution? O A. Mixing two insoluble substances O B. Mixing a solute and a solvent O C. Mixing a solute and a precipitate O D. Mixing two solutes together

If a molecule with an empirical formula CHO has a molar mass of 88.12 g/mol, what is its molecular formula?

Which principal is exemplified by studying a modern river to learn about how ancient rock layers form? A - uniformitarianism B - actualism C-superposition D-lateral continuity

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.