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Questions in chemistry

[Open]If atoms of a halogen nonmetal gain one electron, the atoms then have how many valence electrons?

[Open]What is true about the atoms at the start of a chemical reaction compared to the atoms at the end of the reaction?

[Open]In volumetric analysis, how does one convert concentration from g/dm\(^3\) to mol/dm\(^3\)?

[Open]What is white light?

[Open]Blue light has a frequency of [tex]$6.98 \times 10^{14}$[/tex] Hertz. What is the wavelength of blue light in nanometers? Why?

[Open]Explain how an atom is composed of charged particles yet can have an overall charge of zero.

[Open]At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure if you need a total of 1.48 mol of oxygen gas in the vessel? Express the volume to three significant figures, and include the appropriate units.

[Open]Name a monomer used to make poly(ethene).

[Open]What net force will make a 5 kg bowling ball accelerate by 1.5 m/s\(^2\)?

[Open]If you wanted to detect X-rays coming from the Sun, where would you place the detector, and why?