Other Chemistry Answers

Describe the various methods of sampling and backup with illustrations.

three diamentional reprasentation Br2C=CH2

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.

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

hydrogen gas is generated when acids come into contact with certain metals. When excess hydrocloric acid reacts with 2.5 g of Zn (the metal product is Zn^(2)), what volume of hydrogen gas is collected at a pressure of 0.93 atm and a temperature of 22\deg C?

ulate the work done when 50.0 g of tin dissolvesin excess acid at 1.00 atm and 25°C: Sn(s) +2H+(aq) Sn2+(aq) +H2(g) [Molar mass of tin 118.7 g]