Bolka Corporation, a merchandising company, reported the following results for October: Sales $ 418,000 Cost of goods sold (all variable) $ 175,500 Total variable selling expense $ 23,700 Total fixed selling expense $ 21,800 Total variable administrative expense $ 16,200 Total fixed administrative expense $ 34,300 The contribution margin for October is: Multiple Choice A […]

Draw the Lewis structure of CNO’ (C-N-O) and find the formal charges on carbon, nitrogen and oxygen? (note use the lowest possible formal charge] The formal charge on C is [X], an N is [Y], and on O is [Z]. (For the formal charge write + or – sign) The Correct Answer and Explanation is

The cyanate ion (NÇO-) has a central carbon atom and the fulminate ion (CNO-) a central nitrogen atom. Both share the same three atoms but cyanate ion (OCN-) and fulminate ion (CNO-) have vastly different properties. The cyanate ion is stable, while the fulminate ion is unstable and forms explosive compounds. The resonance structures of

 What are P-wave and S-wave shadow zones, and what do they tell us? Which type does the figure show? The Correct Answer and Explanation is : P-waves (Primary waves) and S-waves (Secondary waves) are two primary types of seismic waves generated by earthquakes. P-waves are compressional waves that move through both solids and liquids, while

The Schematic Diagram Of A Typical Steam Power Plant Is Illustrated In Figure Q6. By Assuming That Both Turbines And Pump Have No Losses, Sketch The T-S Diagram For This Rankine Cycle And Evaluate For This Power Plant; I) The Thermal Efficiency Of This Power Plant, Ii) The Mass Flowrate Of The Steam In The

ASTRA is the nickname of a famous hacker whose complete identity has never been made public. He is purportedly a Greek mathematician who hacked into Dassault Group’s network systems to steal weapons technology data and then sold it to a few hundred individuals around the world for approximately $350 ?million. He was apprehended in 2008.

What is the maximum yield of dibenzalacetone that could be obtained (in grams) if 8.1 g of acetone was used as the starting material (assuming that acetone is the limiting reagent)? Molecular weight of acetone is 58.08 and density is 0.79 at room temperature; MW of dibenzalacetone is 234.30. Write your answer correct to two

The weight of the dibenzalacetone crystals was 0.150 grams. The melting point for the dibenzalacetone crystals was 108-110 degrees Celcius. Determine the adjusted stoichiometry and the limitimg reagent. Then determine the theoretical yeild and the percent yeild. The Correct Answer and Explanation is : Dibenzalacetone is synthesized through an aldol condensation reaction between benzaldehyde and

Which is a correct Lewis structure for carbonic acid, H2CO3? The Correct Answer and Explanation is : The correct Lewis structure for carbonic acid (H₂CO₃) features a central carbon atom double-bonded to one oxygen atom and single-bonded to two hydroxyl groups (–OH). Each oxygen atom in the hydroxyl groups carries two lone pairs of electrons,

Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases. If the molecule contains hydrogen atoms they are attached to oxygen atoms. Only count the best structures. For example, A structure with