During an experiment, a student adds 0.339 g of calcium metal to 100.0 mL of 2.05 M HCl. The student observes a temperature increase of 11.0 °C for the solution. Assuming the solution\'s final volume is 100.0 mL, the density is 1.00 g/mL, and the specific heat is 4.184 J/(g·°C), calculate the heat of the reaction, ΔHrxn.

1. What is the spectrochemical series? Explain why cyano or phosphine ligands are placed high in the spectrochemical series but the hydroxide ligand or the halo ligands are quite low in the spectrochemical series?

2. what are the possible geometries for the six coordinate nickel (II) complexes in this experiment? Draw simple d-orbital ligand field energy diagrams to show the possibilities.

1.104 Do Children Need Sleep to Grow? About 60% of a child’s growth hormone is secreted during sleep,soitisbelievedthatalackofsleepinchildren might stunt growth.63 (a) Whatistheexplanatoryvariableandwhatisthe response variable in this association? (b) Describe a randomized comparative experiment to test this association. (c) Explain why it is difficult (and unethical) to get objective verification of this possible causal relationship.

Why should sodium bicarbonate solution be added slowly when synthesizing isoamyl acetate from isoamyl alcohol and glacial acetic acid? Write balanced equations for all reactions that take place during the neutralization (experiment involves isoamyl alcohol, glacial acetic acid, concentrated sulfuric acid, and 5% aqueous sodium bicarbonate).

At a pH of 4, the Cu-neocuproine complex formed in the liquid-liquid extraction experiment has a partition coefficient of about 6.3 when equilibrated between the acid aqueous solution and chloroform. Calculate the concentration of Cu in the chloroform phase if 40.0 mL of a 0.26 M aqueous Cu solution buffered to pH 4 is equilibrated with 16.0 mL of chloroform.

I am a beginner in this quantum-mechanics stuff. I understand the quantum eraser only from an experimental view. So I didn't understand the formalism that describes the quantum eraser. But what does the experiment tells us? Does the photon know that there is somebody watching it? And this is why it behaves in another way? Does the photon also see the future?

a-) Explain in detail the reason why the center is dark in the enlightenment setup in the Newton rings experiment.

b-) You want to determine the absorption coefficient. Draw the experimental setup and explain why you use the elements.

c- ) You want to observe that light can be polarized. Draw the experimental setup and explain why you use the elements.

In a experiment, 1 ml of .01 M KMnO4 plus 6 drops of 6 M H2SO4 are added together with drops of 0.1 M FeSO4 until change occurs. The color changed from purple to a clear solution. What is the oxidizing agent and reducing agent ? The balanced net ionic equation with 1/2 reactions? Thank you.

1. Describe a visual field experiment involving a patient who has undergone the split-brain procedure. Answer should include at least one example of a question this person would not be able to answer under these conditions.
2. what role does an isotope plays in Positron Emission Tomography (PET)? Can you include an example for better clarification.

Question 462 pts

In between-subjects designs, random assignment distributes participants' individual differences across experimental conditions. This allows researchers to assume that:

Group of answer choices

no condition has an overall advantage relative to the other conditions.

groups of participants do not influence each other.

bias is not a concern in the experiment.

groups of participants are equal.