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How many grams of ethylene glycol, C2H4(OH)2, are needed per kilogram of water to protect radiator fluid against freezing down to -10 degree C?
If a buffer is prepared using equal amounts of acetic acid and sodium acetate predict what the pH of the solution will be.
Use the data below to answer the questions. Substance Delta HF kJ/mol) C(g) 718.4 CF_4(g) -679.9 CH_4(g) -74.8 H(g) 217.94 HF(g) -268.61 Keep in mind that the enthalpy of formation of an element in its standard state is zero
Using the same sample of gas (P 1= 795 torr , T 1 = 37 C ), we wish to change the pressure to 7950 torr with no accompanying change in volume or amount of gas. What temperature T 1, in Celsius, is needed to reach this pressure
If the theoretical yield of a reaction is 0.123 g and the actual yield is 0.121 g, what is the percent yield
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures, including hydrogen atoms, for the formula.
A balloon filled with helium gas at 20C occupies 2.91 L at 1.00 atm. The balloon is immersed in liquid nitrogen at -196C, raising the pressure to 5.20 atm.
How much energy is released when 32.4 g of water freezes? The heat of fusion for water is 6.02 kJ/mol. q=? kJ
Calculate the amount of energy needed in calories to heat 145 g of water from 22.3 degrees celsius to 75.0 degrees celsius. (water in j/g degree celsius = 4.184, cal/ g degree celsius = 1)
What volume in L is occupied by 19.62 g of methane, CH4 (MM = 16.04 g/mol) at 23 °C and 1.34 atm?
If given Cu(OH)2=CuO + ? and separately CuO + HCl= CuCl2 + ? What are the finished equations?
1. Which of the following proceeds with syn addition? a. hydroboration of an alkene. b. hydrobromination of an alkene c. radical bromination of an alkane d. contra-markovnikof hydrobromination of an alkene with dialkyl peroxide initiation e. epoxi..
You have samples of two different compounds, CH3OCH3 and CH3CH2CHO. which ONE of these tests can be used to distinguish between the pair of compounds shown above. 1. heptane/water solubility 2. dilute HCl 3. H2CrO4 4. NaHCO3 solution 5. Br2 in CH3..
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