Because Gadolinium is highly toxic, it is treated with a process called chelation, which creates a protective “cage” of harmless ions that surround the Gadolinium and prevent it from harming the patient before it can be excreted from the body. The contrasting agent Eovist (gadoxetate disodium) has the chemical formula C23H28GdN3Na2O11. Calculate the mass of 10.0 mmol of Gadolinium. Q2. Calculate the mass of 10.0 mmol of Eovist. Q3. What percentage of the mass of Eovist is gadolinium?

How does isotopic fractionation of the light stable elements change with temperature?

Why can gallium, indium and thallium form ionic compounds with oxidation states of either 3+ or 1+? O Inert pair effect O They are transition metals O They don't have ad orbital O They can only form 3+ oxidation states

The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH, (g) + 50, (g)=4 NO (g)+ 6 H,0 (g) K1 2 NO (g) + 0, (g) =2NO,(g) K2 The net reaction is: 4 NH3 (g)+ 70, (g) =4 NO, (g)+6H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K

Select the best possible products for the given reaction. Don't worry about balancing. Li₂S + PbSO4 Na Mg K Rb Cs Be Fr Ra Sc w.n IVE LiSO4 + PbS₂ Li3SO4 + PbS2 Li₂SO4 + PbS PbLi + SSO4 LiSO4 + PbS wwwde Ac VER Periodic Table of the Elements Cr Mn Aka Zr Nb Mo Tc Ru Rh Pd Symbol W Re La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Th Pa U Np Pu Am Cm Bk Site Ga Ge As Se N Ag Pt Au Hg Rf Db Sg Bh Hs Mt Ds Rg Cn Nh FI Mc Lv Ts Og Moble Sn Sb Te Vas He ww Ne Br Kr Xe Bi Po At Rn Er Tm Yb Lu Es Fm Md No Lr

A 67.2 g sample of gold and palladium allo contains 3.40x10^23 atoms. What is the mass percentage of the gold in the alloy. And what is the mass percentage of the palladium in the alloy? Do not give handwriting solution.

Explain the properties and structure of Aliminium 2024 (Duralumin)

The alkali metals are readily soluble in liquid ammonia to give bright blue metastable solutions with unusual properties. Such solutions are unstable with respect to amide formation, as shown for potassium:   2K + 2NH3   2KNH2 + H2 Assign an oxidation number to each atom and verify that the total number of electrons lost is equal to the total number gained. Enter the oxidation numbers under each substance in the box corresponding to the element label to the left. If a box is not needed, leave it blank.   K   NH3   KNH2   H2     K               N               H               For the reaction as written, the total number of electrons lost is  and the total number of electrons gained is .   Submit Answer

Calcium ions contribute to the hardness of water.  a) Based on the Ksp experiment, describe a way to “soften” water by removing calcium ions.  b) what would be the advantages and disadvantages of this method?

If the lead can be extracted with 92.5%% efficiency, what mass of ore is required to make a lead sphere with a 7.50 cmcm radius?