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(Subject: Chemistry & Physics) Please answer all questions. Please be clear. Short answers are fine. 3-4 sentences.
1 )If a feather and a lead ball are dropped from 1000m in AIR (vacuum) , will they hit the ground at the same time? Why or Why not? Recall that in a vacuum, the acceleration due to gravity is the same for all objects. (i.e. acceleration due to gravity on earth is g = 9.8 m/s^2
2) List the three principal types of chemical bonds in order of strength with the strongest first. Please include a short description of each and an example of each.
3) If you have a cup of oil (non polar) and a cup of water (polar), and a cup of an unknown substance, how can you tell if the unknown substance is polar or non polar?
Dehydration of two alcohols leads to preparation of methylcyclohexene. write chemical equations for both reactions.
When separated from a water solution, CuSO4 forms a hydrate with 5 water molecules per formula unit. If 38 g of anhydrous CuSO4 are dissolved in water, what mass of the hydrate could be recovered from the solution?
Problem- The relative humidity of air equals the ratio of the actual partial pressure of the water in the air to the equilibrium vapor pressure of water at the same temperature.
A sample of chloroform is found to contain 10.5 g of carbon, 93.1 g of chlorine, and 0.88 g of hydrogen. If a second sample of chloroform is found to contain 20.8 g of carbon, what is the total mass of chloroform in the second sample?
A system obtains the amount of heat equal to q > 0 from the surroundings at constant volume. Will the internal energy of the system increase, decrease, or remain constant? Will the temperature of the system increase or decrease
A voltaic cell is constructed with two silver-silver chloride electrodes, each of which is based on the following half reaction
consider a solution that is 0.10 m in a weak triprotic acid a triprotic acid is an acid which has three h or hydrogen
Which are the organic chemical groups that compose carbohydrates- how they are categorized according to the presence of those groups
A student tried the Wittig reaction experiment and did not notice the development of a yellow color when she treated benzyltriphenylphosphonium chloride with sodium ethoxide
Explain what is "transformation" in the context of this experiment? Name and briefly describe two methods of bacterial transformation.
CaCO3(s) + 2 HCl(aq) -> CaCl2(aq) + H2O(l) + CO2(g) How many mol CaCO3 can be dissolved in 0.0575 mol HCl?
Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
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