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8 Answered Questions for the topic Ask-chemistry Question

Ask Chemistry question Science Chemistry

07/10/16

Atrazine Compound

Please look up the completed Lewis structure of atrazine and answer the following questions:    -How many atoms are sp3 hybridized?  -How many sigma bonds are in the completed Lewis structure? 
Ask Chemistry question Science Chemistry

07/10/16

Which of the following compounds when placed in water would produce an electrically conductive solution?

-FeSO4 -ZnBr2 -Mn(OH)2 -CsBr -CCl4   Please select all that are true! 
Ask Chemistry question Chemistry Frequency

07/09/16

Assume that wave A and B are examples of electromagnetic radiation and that the wavelength of B is twice that of A.

Which of the following statements is true?    1. Wave A is traveling at a greater speed than wave B through a vacuum 2. The wavelength of A is directly related to the photon energy associated... more
Ask Chemistry question Chemistry Chemical Formula

07/09/16

Please help me with this!!

Oxygen is composed of three isotopes: oxygen-16, oxygen-17 and oxygen-18 and has an average atomic mass of 15.9980 amu. Oxygen-17 has a mass of 16.992 amu and makes up 0.035% of oxygen. Oxygen-16... more

07/09/16

The products of complete combustion of ethanol, C2H5OH, are shown in the unbalanced equation:

C2H5OH (l) + O2 (g) ----> CO2 (g) + H2O (l)    This reaction has a CO2 percent yield of 62.3%   What will be the mass of CO2 EXPERIMENTALLY obtained when 44.5g O2 and 24.6g C2H5OH are... more
Ask Chemistry question Chemistry General Chemistry

07/09/16

A one electron species, Xm, where m is the charge of the one electron species and X is the element symbol, loses its one electron from its ground state when it

absorbs 1.96E-17 J of energy. Using the prior information, the charge of the one electron species is ______.
Ask Chemistry question General Chemistry

07/09/16

Combustion of a compound of CxHyOz yields 6.25g H2O and 20.4g CO2 when 16.7 g of O2 is used. What is the empirical formula of the compound?

 Please help me with this! Work would be very much appreciated. 
Ask Chemistry question Chemistry Methyl Group

07/08/16

Hello does anyone know the molecular formulas for these three substances (dimethylicaritin and desmethylicaritin? Also for dimethylsalidroside)?

Hello does anyone know the molecular formulas for these three substances (dimethylicaritin and desmethylicaritin? Also for dimethylsalidroside)? Maybe the first two have the same. Below are the... more

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