From the data below element first ionization energy 1 1310 kj/mol 2 1011 kj/mol 3 418 kj/mol 4 2080 kj/mol 5 947 kj/mol which elements are likely to be nonmetals? 1. 1 and 2 only 2. 2 and 5 only 3. 3 and 5 only 4. 3 only 5. 1 and 4 only

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius