General Chemistry Answers

Determine atmospheric pressure if the density of sulfur hexafluoride (SF₆) is 5.32 g/L at 52^oC.

Polymerize the stated compounds, at least 8 carbon atoms for each polymer:

(a) 2-ethylbutene (CH2=C(C2H5)CH2CH3)

(b) 3,4-dipropyl-3-octene

(c) methyl methacrylate (CH2=C(CH3)COOCH3)

(d) 5-hydroxypentenyl benzoate (C6H5COOCH=CHC3H6OH)

HCl is being titrated with NaOH. I want to find the concentration of HCl. A recently cleaned burette was left wet and then filled with NaOH. How would this affect the concentration of HCl? Would it make it appear as though the concentration of HCl is higher or lower than it actually is and WHY?

If the temperature of a 15.5 mL sample of N₂ gas is increased from 25.0 °C to 75.0 °C as its pressure remains constant, what will be its new volume in milliliters?

120 grams of sodium hydroxide completely reacts with phosphoric acid (H₃PO₄) in the reaction 3 NaOH + H₃PO₄ -> Na₃PO₄ + 3 H₂O how many molecules of Na₃PO₄ are produced?

120 grams of sodium hydroxide completely reacts with phosphoric acid (H₃PO₄) in the reaction 3 NaOH + H₃PO₄ -> Na₃PO₄ + 3 H₂O what mass of water is produced?

A sample of an oxide of copper 

contains 8 g of copper combined with 1 g 

of oxygen. Find the empirical formula

•  Answers to the calculations (showing full solutions)

The reaction between lead nitrate and potassium iodide is an example of a precipitation reaction.

Pb(NO3)2 + 2KI + PbI2 + 2KNO3

Let us consider an unbalanced equation

Pb(NO3)2 + KI → PbI2 + KNO3

Two reasons for the percent yield I calculated being 70%.

What type of reagent is required to convert No2 to N2