Chemistry Answers

With the help of two examples, compare the terms basicity and nucleophilicity.

Why cis- is more polar comparison to trans- form of 1,3-dimethylcyclobutane ?

Calculate the molarity of an acetic acid solution if 34.57 mL of this solution is needed to neutralize

25.19 mL of 0.1025 M sodium hydroxide.

A compound is composed of 5.045g of carbon, 0.847g of hydrogen and 3.36g of oxygen. Find the empirical formula for this compound knowing that H = 1g/mole , O = 16g/mole and C =12 g/mole.

Determine the boiling point of a solution of 10 grams of a substance of molecular weight 94 g/mol in 500 grams water.

Does the hydrogen atom form covalent bond as well as ionic bonds? Why?

What is the total number of moles of atoms present in 1 mole of (SO4)3 (PO4)2?

How many valence electrons are in an atom of chlorine

First Law of Thermodynamics and Calorimetry

A gas system with constant pressure has change in internal energy of 240 J. Heat was lost to the surroundings and 150 J work was done to the surroundings as well. How many calories of heat was lost?

315 moles of butane (C4H10) was burned in a copper calorimeter containing 5065 g of water. The calorimeter weighs 2,800 g. The temperature was observed to increased by 3.15 °C. Calculate the molar heat of combustion of butane. The specific heat of copper and water are 0.386 J/g. °C and 4.18 J/g. °C respectively.

A 60-g silver spoon (specific heat 0.233 J/g °C) at 25 °C is placed in 180 g of coffee at 85 °C and the temperature of the two become equal. What is the final temperature when the two become equal? The coffee has specific heat of 5.12J/g. °C.

Which alkyl halide is more reactive to form alkane