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Using the elements sodium, potassium, calcium, magnesium, carbon, oxygen, nitrogen, fluorine, chlorine, iron, hydrogen and sulphur, provide some key features of the periodic table such as:
- How they are organised in groups, periods and blocks
- Any trends in their chemical and physical properties in the groups they belong to and the periods they are in
Household vinegar is aqueous 5.00% acetic and CHC2H3O2 SOLUTION(by mass), if the density is 1,01g/ml calculate the mole fraction, molarity and molality.
A reaction vessel contains these compounds at equilibrium. What will happen if the volume of the container is reduced by 50% at constant temperature?
Give an example of a biological reaction in which water participates as a reactant and a reaction in which it participates as a product.
if 9.0L of NO are reacted with excess O2 at STP, what is the volume in liters of the NO2 produced?
Calculate the total pressure (in atm) in the tank at 25°C. First need to calculate the number of moles of each gas added.
what is the relationship between the carbon to nitrogen bond lengths and bond order for HCN molecule
A sample of solid having a density of 4.88 g/cm3 had an apparent mass of 16.0886. The density of the balance weights is 8.00 g/cm3. Calculate the true mass of the object.
Diazomethane has the following composition by mass: 28.57% C, 4.80% H, and 66.64% N. The molar mass of diazomethane is 42.04 g/mol. Find the molecular formula of diazomethane and draw its Lewis structure.
Name the product of reaction, Give and name the products when 3-t-butyl 2,4-dimethyl 1-hexene reacts iwth the following assume the proper catalysts are present
What two things can you say about a water-toluene mixture that cannot be said about the boiling point and other physical characteristics of a benzene-toluene mixture
The temperature of the calorimeter and the water rises from 30.87 degree centigrade to 38.91 degree centigrade what is the heat of combustion per mole of nitrocaine
Compare your predicted Cl-C-Cl bond angle and the program model predicted Cl-C-Cl bond angle in C2Cl4 with the actual Cl-C-Cl bond angle in C2Cl4. Are they the same. Explain any differences based on electron repulsion and sizes of atoms and electr..
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