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How many grams are in 1 mole of table salt (NaCl). How many individual ionic compounds of NaCl are in 1 mole?
Calculate boiling point and freezing point - assume complete dissociation of ionic compounds:
4.626g sample of hydrocarbon upon combustion yielded 6.484g of CO2, what is the % by weight of the carbon in the hydrocarbon?
Calculate molar solubility of CuI in 1.0 M NaI. Assume the highest complex formed is CuI2 - .
Electromagnetic Waves: Radio Message from Mars At its closest approach, Mars is 56 million km from Earth. How long would it take to send a radio message
In the reaction barium chloride plus potassium chromate yields potassium chloride and barium chromate, 10.0 milligrams of barium chloride.
The half-life for the decay of aluminum -26 is 7.20 x 10 ^5 years. 2) How many years did it take for 99.99% of the aluminum -26 to decay?
Write a balanced chemical equation, for the reaction that occurs, when Solid barium hydroxide, dissolves in water.
The definition which is used in everday chemistry. Quite useful in understanding chemistry and mostly wrongly understood.
Understanding atomic weight, atomic number, atomic composition
Calculate concentration of thiosulfate ion, S2O3^2-, when 1.00 mL of .00500 M Na2S2O3 are added to experiment.
Use of MO-Theory and MO-diagram for Species of Nitrogen, N2 Nitrogen, N2, can ionize to form N2+ or add an electron to give N2-.
Calculate the mass of propylene glycol (C3H8O2) that must be added to 0.340 kg of water to reduce the vapor pressure by 2.88 torr at 40 °C.
Many dyes used in food products are classified a hazardous chemicals in their pure form. Why then can they be safely used in those food products?
Measuring Water Hardness.In an experiment for measuring water hardness in a water sample
Calculating volume of water evaporated.A 230mL sample of a 0.276 M CaCl2 solution was left on a hot plate overnight
General Chemistry - Orbitals and Configuration.Which one of the following configurations depicts an excited oxygen atom?
What would the world be like where water is as dense as a solid rather than a liquid?" Ideas occur.
What are the characteristic chemical differences between metals and non-metals.
What would would the steps to find the concentration of sodium chloride in the final solution if 24.34 mL of 0.113 M BaCl2 completely reacts.
A 0.500-g sample of CaC2 is added to a coffee cup calorimeter containing 75.0 mL of water at 25.0°C.
Calculate the number of moles of aluminum in a solution containing 10 grams sample.
A recycling plant has chips of hight density poly(ethylene) (HDPE, d=0.92g.mL) used for plastic bottles and poly(vinylchloride).
How many grams of a glucose are in 1 liter of 10% mass/vloume glucose solns?How many grams of NaCl are needed to make a molar solution of 2 liters?
A sheet of metal has the dimensions 5mm, 25 cm, 55cm and its mass is 14.7kg. Using the densities of metals, can you definitely tell what metal this is? How?