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Tell whether each of the experimental errors in excercise will affect the melting point of the unknown component. If it will, tell how it will affect the melting point and explain why
Light with a wavelength of 330nm shines on a piece of metal with a threshold energy of 4.60 eV. What would you expect for the kinetic energy
Insulin is a protein that is used by the body to regulate both carbohydrate and fat metabolism. A bottle contains 375 of insulin at a concentration of 50.0 . What is the total mass of insulin in the bottle?
The initial temperature of the water was 25.4 C and the final temperature of both the water and metal was 36.6 C. If the specific heat "c"
How many grams of pure solid PbCl2 could be formed from the reaction of 5.176 g of lead with excess HCl?
When power was turned off to a 30.0 gal. water heater, the temperature of the water dropped from 75.0°C to 22.5°C. How much heat was lost to the surroundings? (1 gal = 3.785 L) Assume the density of water is 1.00 g/mL.
Number of protons & the number of neutrons in the nucleus of the element boron and potassium and the number of electrons in their 1st & 2nd quantum shells?
Hydrazine, N2H4, is used as a rocket fuel. In the reaction below, if 80.1 g of N2H4 and 92.0 g of N2O4 are allowed to react, which is the limiting reactant?
In a Titration 33.21 mL 0.3020M rubidium hydroxide solution is required to exactly neutralize 20.00mL hydrofluoric acid solution. What is the molarity of the hydrofluoric acid solution?
The results of the experiment supported the hypothesis of semiconservative replication, which was proposed by Watson and Crick.
A mixture of gases contains 0.26 mole CH4, 0.38 mole C2H6, and 0.18 mole C3H8. The total pressure is 1.50 atm. Calculate the partial pressures of the gases.
A mixture of nitrogen and liquid ethanol in a closed constant-volume container has a partial pressure of 101 mm Hg of nitrogen and 66.2 mmHg ethanol at 27 C (300 K)
What is the Molecular formula of the acid. Assmue the neutralization reaction has the formula HA+NaOH--->NaA+H2O
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