How many valence electrons does a helium atom have? consult the periodic table.

Which kind of bonds are found in a sample

How do I find the number of atoms in grams of an element?

An island arc complex is formed where A. two continental plates converge. B. a volcano erupts along an oceanic plate. C. a continental and oceanic plate converge. D. two oceanic plates converge. its D ... right?

Barry fixes his tie by looking at it in the mirror. How does the light coming from Barry's tie reach his eyes?

After 1911, most scientists accepted the theory that the nucleus of an atom was very dense and very small and had a positive charge.

determine the specific heat of a material if a 35g sample absorbed 96 J as it was heated from 293 K to 313 K?

A compound that changes color when it comes into contact with an acid or base is an?

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming all of the energy from the food was transferred into the water?

Why doesn't water light on fire? It has all the ingredients except heat! Hydrogen for the flammability factor, oxygen so it can keep burning, and all you need to do is add heat and BOOM you have a flame! 15 pts

The type of social bonds present in modern societies that are based on difference, interdependence, and individual rights is called: