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A biology experiment requires the preparation of a water bath at 37.0°C (body temperature). The temperature of the cold tap water is 22.0°C, and the temperature of the hot tap water is 65.0°C. If a student starts with 70.0 g of cold water, what mass of hot water must be added to reach 37.0°C?
The Ka for cacodylic acid (C2H7AsO2) is 5.37 x 10-7. An amount (0.1035 g) of this compound is added to 0.5 L H2O. What is the resulting pH of this solution
Calculate Eo, E, and deltaG for the following cell reactions Mg (s) + Sn2+ (aq) Mg2+(aq) + Sn(s) [Mg2+]= 0.045 M, [Sn2+] = 0.035 M
Given that silicon and oxygen form a diatomic molecule of siO, write the orbital (electron) configuration for the molecule
1.the chemical reaction is given cacn2 3 h2o rarr caco3 2 nh3 follow this equation and calculate how much cacn2 is
5L of CO2 at 500 torr and 3L of CH4 at 400 torr are put into a 10L container. what is the pressure exerted by the gasses in the container.
Ethane C2H6 undergoes combustion according the following chemical equation: C2H6(l) + 7/2O2(g) ---> 2Co2(g) + 3H2O(l). Calculate delta H knot for this reaction. 1. -1560 kJ/mol 2. -11.230 kJ/mol 3. 22,040 kJ/mol 4. -420 kJ/mol 5. 420 kJ/mol
a 4 liter flask contains nitrogen gas at 25C and 1 atm. what is final pressure if 2 g of N2 gas are added and flask is cooled to -55C?
The name of this covalent compound is nitrogen trioxide. d. The name of this ionic compound is manganese oxide.
distance between two consecutive peaks or troughs. frequency number of waves per second that pass through a given
Oxalate ion, C2O4 2-, and permanganate ion,MnO4 -1,react in aqueous basic solution to give carbonate ion, CO3 2-, AND solid manganese dioxide,MnO2. What is the complete and balanced equation
(a) Write the reaction equation, (b) indicate which product is predominant at low temperature, (c) which product is predominant at high temperature, and (d) draw a reaction energy diagram explaining your answers in b and c.
How many liters of a 18.0%(m/v) glucose solution would you need to obtain 160 g of glucose
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