What is the coefficient of water when the following equation is balanced correctly to the lowest whole number ratio? 

Choose the more electronegative element in the following: 

How many valence electrons does silicon (Si) have? 

Complete the following statements about the Lewis structure of KrF3-. The central atom is . There are single bonds. There are double bonds.  There are lone pairs around the central atom. 

What is the volume of ammonia (NH3) produced when 0.315 g of nitrogen gas reacts with excess hydrogen gas at STP? 

A gas mixture in a container has 0.311 mol H2  and 0.572 mol He. The total pressure in the container is 2.89 atm. What is the partial pressure of hydrogen gas?

Based on the data, the nurse determines the client’s status is . 

Using the conversion factors in the table below determine how many uky are in 42.5 sew.  12.0 uky = 1.00 flw 4.1 ant = 3.00 sew 3.25 ant = 2.60 flw

The molecular elements hydrogen gas and chlorine gas react to form hydrogen chloride gas. How much chlorine gas (in grams) is needed to produce 2.77 g of hydrogen chloride gas? 

What is the energy of a photon with a wavelength of 452 nm?