Other Chemistry Answers

Commercially available HCl is 35% w/w and has a density of 1.20g/ml. 175.0 ml was diluted to 1.00L with water to make more dilute HCL solution. A dry mixture of KOH,K2CO3 and KCL weighing 5.00g was dissolved in 100.00ml of dilute HCl solution. After complete reaction, 249.0 ml of dry CO2 was produced at 22 Celsius and 740 tore. Titration of the excess HCL required 86.60ml of 1.500N NaOH. Find w/w of original mixture

Given the following rate law, find the half-life of the reactant O3 if [O3]0 = 0.185 M and k = 3.034×10-3 s-1:

a weak acid ha,having a ka of 1 x 10-9,ionises in water according to the equation ha=h + a-.what are the concentrations of all the species in a solution containing 0.1 mole of ha per cubic decimetre?

Complete the following reaction s, If more than one product is formed which one is major product?
1) CH2=CH-CH2-CHCl-CH2Cl + C2H5ONa + C2H5OH
2) 1-chloro-1-methylcyclohexane + C2H5ONa + C2H5OH

In the industrial preparation of ammonia, nitrogen and hydrogen gases are are reacted according to the reaction N2(g) + 3H2(g) 2NH3(g). Suppose 466 kg of N2 are mixed with 39.4 kg of H2

How many moles of N2(g) and of H2(g) will remain when the reaction is complete?

After 2238.6 years, how much of an original
1.15 g of radium-226 remains? Its half-life is
1599 years.

Duncan takes a break from studying and goes to the gym to swim laps. If swimming burns 7.25×105 cal per hour, how many kilojoules does swimming burn in that same amount of time?
In other words, convert 7.25×105 cal to kilojoules.

Briefly explain various methods of preparation of lyophobic sols

Calculate and explain how to make 400ml of a 1:19 dilution from a 5M H3PO4 solution

How many atoms in 2 moles of calcium
How many atoms in 2 moles of calcium