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The periodic table is broken down into rows and blocks such as the s, p, d and f blocks. Each block has different properties associated with them. It has been hypothesized that we could eventually reach a "g" block if enough elements were created.
Hypothesize what kinds of properties a "g" block element would have. Would it be stable? Radioactive? What would its radius be like? Please explain your reasoning.
Question- Calculate the pH at the equivalence point for the titration of 0.20 M aniline (C6H5NH2) with 0.20 M HCl. (Kb for aniline = 3.8 x 10^(-10))
Assume that 50.0 mL of 0.100M HCl was added to 125 mL of 0.100M Sodium Acetate. Is the resulting solution a buffer. Why or why not. Calculate the pH of the resulting solution. The Ka for acetic acid is 1.75 x 10^-5.
1. The decay constant of the nuclide is 3.417x10^-3s^-1. What is the half-life of this nuclide?
A.) How many mg of SnF2 are in the tube? B.) What is the molarity of fluoride ions in the toothpaste?
If an aqueous solution (solvent = water) is 0.5 molal in NaClO, what is the mole fraction of NaClO that is present? Hint: assume you have 1.00 kg of total solvent in your sample.
These questions need around a paragraph or two for the answer. For full rating, answer in such manner please. Explain what predictions can you make about the primary structure of an alpha-helical region of a protein that spans a biological membrane
When Copper (II) sulfate is prepared from copper (II) nitrate and sodium sulfate, the reaction initially produces a hydrated product: Cu(NO3)2 + Na2SO4 + 5H2O yield CuSO4 x 5 H2O + 2 NaNO3
an organic substance has an enthalpy of vaporization of 29.0 kjmol. the compound has a vapor pressure of 524 mm hg at
A compound is composed of only C, H, and O. The combustion of a 0.519-g sample of the compound yields and 0.255 g of H2O. what is the empirical formula of the compound?
The enthalpy change when 1 mol methane (CH4) is burned is -890 kJ. It takes 44.0 kJ to vaporize 1 mol water. What mass of methane must be burned to provide the heat needed to vaporize 1.00 g of water
Hospital X-ray generators emit X rays with wavelength of about 15.0 nanometers (nm), where 1nm=10^9-m. What is the energy of a photon of the X rays
In the reflection for this week, think of your experiences with medical providers. Are there some that just seemed to know more than others despite?
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