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If a sample known to be about 10,740 years old has 400 carbon-14 atoms, how many atoms were in the original sample when the organism died. The half for carbon-14 is 5,730. Please show step by step.
After mixing, you filter it and find that the concentration of the filtered solution is 5ppm Cu2+. From the above scenario, calculate the mass of Cu2+ bound to the soil. Calculate the K(dis).
What is the independent variable of the activity? What is the dependent variable of the activity? What variables were controlled during the activity?
A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.00 mL. What is the concentration of nitric acid in the final solution?
Draw the molecule by placing atoms on the grid and connecting them with bonds. If there is more than one answer, draw all o
How many many molecules of XeF6 are formed from 12.9L of F2 (at 298K and 2.60atm). Asssume there is an excess of Xe
A student constructs a coffee cup colrimeter and places 50 ml of water into it. After a brief period of stabilization, the temp of the water in the calorimeter is 23.5 celsius
What is ozone and how it works as a protective molecule for our environment? What are the effects of CFCs on the ozone layer.
30 mol H2 and .30 mol I2 are mixed in a 1.00L container, and the reaction forms HI. If Kc=.49 for this reaction, what is the equilibrium concentration of HI. I2(g) + H2(g) --- 2HI(g)
The vessel can withstand a pressure of only 20 kPa above atmospheric pressure (taking into account a suitable saftey factor ) what is the maximum temp to which N2 can be raised in the vessel
The combined gas law requires that only the amount of gas be held constant. if P2 is unknown and needs to be computed, then the expression to be use is a) P2=P1V1T1/V2T2 b) P2=P1V2T2/V1T1
Can't make it work. You have 0.035 +/- 0.002 mol of red dye, which you mix (thoroughly) with 25.00 +/- 0.05 mL of water. What is the concentration of the dye mix .001400 +/- .000008 M
the structure of HA for formic acid, and structure of the conjugate base for formic acid?
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