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Use a sketch to show the change that occurs as a sulfur atom becomes a sulfide ion. Describe how the distance from the nucleus to the valence electrons changes as the sulfide ion forms and tell why this change occurs.
Concentrated stock HCl has a molecular weight of 36.46 and contains 32g of salt for every 100g of acid (termed as 32% w/w). To prepare molar solutions %w/w must be converted into %w/v by considering the density of stock HCl which is 1.16.
A buffer is to be prepared by adding solid sodium acetate to 0.10 M CH3COOH. Which of the following concentrations of sodium acetate will produce the most effective buffer
2 n2g 3 o2g rarr 2 n2o3gat a certain temperature and pressure 2.8 l of n2 reacts with 4.2 l of o2. if all the n2 and
What can be said about the stoichiometric coefficients of a balanced chemical reaction AND the powers to which the concentrations are raised in the rate-law expression
calculate the concentrations of all species in a 0.690 m na2so3 sodium sulfite solution. the ionization constants for
a house is occupied by 5 persons and each person releases heat at a rate of 360 kjh. the house is also equipped with 10
Chemical Structure and Hydrogen Bonds in Base Pairs, Draw the chemical structure of a correctly base paired G-C pair, then re-draw the pair with a propeller twist these answers should all be on one page following box 'G'
For the elementary processes whose equations are given below, determine whether each is unimolecular or bimolecular and determine the rate law for each process. Pick the choice which is correct.
In the laboratory, a student named Georgia weighed 5.05 grams of an unknown solid mixture containing benzoic acid, copper (II) sulfate and sand.
A 100 mL of a 0.100 M solution of vinegar (acetic acid, CH3COOH) is mixed with 100 mL of a 0.100 M baking soda (sodium bicarbonate) solution and a reaction proceeds that generates carbon dioxide, water and sodium acetate.
Hydrogen has two naturally occurring isotopes, 1H and 2H. Chlorine also has two naturally occurring isotopes, 35Cl and 37Cl. Thus, hydrogen chloride gas consists of four distinct types of molecules
A weather balloon at Earth's surface has a volume of 4 L at 294 K and 746 mm Hg. If the balloon is released and the volume reaches 4.19 L at 715 mm Hg.
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