What mass of helium is in a 2.00L ballon at STP

Compare van der waals forces ionic bonds and covalent bonds

Two metals with equal mass and different heat capacities are subject to the same amount of heat; which undergoes the smallest change? a) The metal with the higher heat capacity. b) The metal with the lower heat capacity.

Many people think that summer is warmer because the earth is closer to the sun at that time of year. explain why

In a chemical reaction, 12 grams of sodium must combine with how many grams of chlorine to produce 30 grams of table salt?

1. How does the period (row) in which an element is located relate to the number of shells that contain electrons? 2. How does the group (column) in which an element is located relate to the number of valence electrons in its outer shell? 3.

Helium (He), oxygen (O), carbon (C) fluorine (F), and chlorine (Cl) are all nonmetals. Using the periodic table, which pair of nonmetals do you predict has the most similar properties, and why?

Calculate the volume of a 1.25 M solution of HCN made from 31 grams of HCN

How to find the valency of a polyatomic ion?

Which of the following is true in regard to a charged atom? A. The number of protons and the number of electrons within the same atom are unequal. B. When an atom gains an electron, it becomes a cation, which is positively charged. C.

What is cycloalkane?