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A room contains 48 kg of air. How many KWh of energy are necessary to heat the air in the house from 7oC to 28oC? The heat capacity of air is 1.03 J/goC.
Draw Lewis dot structure and predict molecular geometry - Show the Lewis structures of the following molecules and then predict their geometry.
Firefly luciferase is the enzyme that allows fireflies to illuminate their abdomens. Because this light generation is an ATP-requiring reaction, firefly luciferase can be used to test for the presence of ATP
A radioactive 32P nucleus has a half-life of 14.3 days. If a 50.00 g sample is allowed to decay naturally, how much time passes until only 1.00 g of 32P remains
What is the electron geometry. 3. What is the molecular geometry. 4. What are the hybridized orbitals. 5. Is the molecule polar or non-polar
The concentrations of Al and K in a sample of river water are 0.50 mg/kg and 1.3 mg/kg, respectively. Express the concentration in molality
Question- Ethanol is produced industrially by the acid catalyzed reaction of ethylene with water. The balanced equation for this reaction is: C2H4(g) + H2O(g) --> C2H5OH(l)
Tulips bulbs cost $1.19 each. I want to plant tulips every 3 inches along the border of my garden which is 10 feet long. How many tulip bulbs will I need to buy. How much are the tulips bulbs going to cost me
Calculate the total concentration of lead dissolved ([Pb]total) in a solution saturated with PbI2(s) and containing dissolved I- with a concentration of [I-] = 0.294 M. The solubility of lead is governed by the reactions shown below.
This was a question on my Mastering Chemistry homework. It's from Tro's Cha: Determine the pH of the following two-component solution: 0.260 M NH4NO3 and 0.102 M HCN
What is the value of at this temperature? 23.15 At this temperature the rate constant for the reverse reaction is 310. . What is for the reaction?
a 11.7 kg piece of metal at 94.9 c is placed in 481 g of water at 26.1 c in an insulated container. the metal and water
why must the Meltemp apparatus cool dwon to around 40 C between measurments? 5)why you expect ionic solids to have higher melting point than molecular solids?
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