The formula for disulfur trioxide gas is:

455 in. converted to yd. to the proper number of significant figures is: Given 1 ft = 12 in 1 yd. = 3 ft. 1 mi. = 5280 ft

A nurse is hanging an IV bag that contains a 3.0 % potassium phosphate solution.   This means that:

Based on the solubility rules, select the ionic compounds that are insoluble in water. Solubility Rules  Li+, Na+, K+, Rb+, NH4+ All salts containing alkali metal ions and the ammonium ion are soluble     NO3-, C2H3O2- All nitrates and acetates are soluble     Cl-, Br-, I- Most chloride, bromide, and iodide salts are solubleExceptions are Ag+, Hg22+, and Pb2+ which are insoluble     SO42- Most sulfate salts are solubleExceptions are Ca2+, Sr2+, Ba2+, and Pb2+ which are insoluble     CO32-, PO43-, CrO42- Most carbonates, phosphates, and chromate salts are insolubleExceptions are the Group IA elements and NH4+ which are soluble     OH- Most hydroxide salts are insolubleExceptions are Group IA elements and NH4+ which are solubleCa2+, Sr2+, Ba2+ are slightly soluble (considered to be insoluble)     S2- Most sulfide salts are insolubleExceptions are Group IA elements NH4+ and Ca2+, Sr2+, and Ba2+ which are soluble

The correct scientific notation for 0.00521 kg with the proper number of significant figures is:

Which equation represents the dissociation of sodium phosphate, Na3PO4 in water?

Provide the isotopic symbol for Magnesium.    Note:  the top box is blank 1 and the bottom box is blank 2. _______ _______

How much of a 500.0 mg sample of a radioactive isotope is left after 5 half lives? mf = mi 12n{“version”:”1.1″,”math”:”mf = mi 12n”}

The electron configuration for Titanium (Ti) is:

How many atoms does 3.2 mol of silver (Ag) contain? Given:  1 mol  = 6.022 x 1023