A compound of arsenic and oxygen contains 75.7% arsenic by mass . What is the ratio...
A compound contains arsenic and oxygen as its only elements. A 1.626 g sample of the compound contains 1.060 g of arsenic. What is the empirical formula for the compound?
A) compound a contains 3.153 g of oxygen per gram of carbon whereas compound b contains 6.306 g of oxygen per gram of carbon what chemical law do these data illustrate? -law of constant compositoon -law of multiple proportions -law of concervation of mass B) if compound a has an equal number of oxygen and carbon atoms what can we conclude about thw composition of compound B? -it has 2x as many oxygen that carbon atoms -it has 1/2 as...
7. A compound contains 30.4 g of nitrogen and 69.6 g of oxygen by mass. What is the chemical formula of this compound? 8. How many molecules of H,O (M.w. 18 g/mol) are there in 355 grams of H,O? How many hydrogen atoms are in 355 grams of HO?
Nitrogen forms a number of compounds with oxygen, for example nitrous oxide, N2O, is 6365% N by massA second compound, which contains two atoms of nitrogen per molecule, is 25.94 % N by mass. How many oxygen atoms are in the second compound?
A compound containing only nitrogen and oxygen has an oxygen-to-nitrogen mass ratio of 1.142 : 1. Which oxygen-to-nitrogen mass ratio is least likely for another compound composed of only nitrogen and oxygen? A. 0.5710 : 1 B. 1.579 : 1 C. 2.284 : 1 D. 2.855 : 1 E. 3.426 : 1
The compound As2I4 is synthesized by reacting arsenic metal with arsenic triiodide (AsI3). If a solid cubic block of arsenic (density = 5.72 g/cm^3) that is 3.00 cm on edge is allowed to react with 1.01 x 10^24 molecules of arsenic tiiodide, how much As2I4 can be prepared? As + AsI3 ---- As2I4 If the % yield of As2I4 was 75.6, what mass of As2I4 was actually isolated? 194. The compound As214 is synthesized by reaction of arsenic metal with...
A 100-g sample of HgO contains 92.6 g mercury and 7.4 g oxygen. What mass of mercury atoms and what mass of oxygen atoms are contained in any 100-g sample of HgO? grams Hg atoms grams O atoms
A compound of molar mass 166 contains only carbon, hydrogen, oxygen, and bromine. Analysis shows that a sample of the compound contains six times as much carbon as hydrogen, by mass. Part A Calculate the molecular formula of the compound. Express your answer as a chemical formula. Enter the elements in the order: C, H, O, Br. C6H7O2Br5
The percent composition of oxygen in a molecule that contains 2 oxygen atoms is 27.6%. This molecule contains only carbon, hydrogen and oxygen. Combustion of 225 mg of the compound yields 512 mg of carbon dioxide and 209 mg of water. What is the molecular formula of this compound?
The compound AS_2I_4 is synthesized by reacting arsenic metal with arsenic triiodide (Asl_3). If a solid cubic block of arsenic (density = 5.72 g/cm^3) that is 3.00 cm on edge is allowed to react with 1.01 Times 10^24 molecules of arsenic triiodide, how much AS_2l_4 can be prepared? As + Asl_3 rightarrow AS_2I_4 If the % yield of AS_2l_4 was 75.6, what mass of AS_2l_4 was actually isolated?