Can someone help with my chemistry problems homework? I am struggling to get the
ID: 1049729 • Letter: C
Question
Can someone help with my chemistry problems homework? I am struggling to get the answers to these and need a little assistance please! I would greatly appreciate any help anyone can offer to me for these problems!
1. (5pnts) You found an unlabeled powder in the General Chemistry Lab. You dissolved it water and performed a flame test. The flame turned a bright yellow color. You then measured the electrical conductivity, and it was much higher than that of pure deionized water. a. Is this powder soluble or insoluble in water? b. Is this powder an ionic or molecular compound? C. Please explain why the flame turned yelloW 2. (5pnts) Write down the electron configuration and orbital diagram for iron a. Circle the final electron that you added to your orbital diagram and provide the values for its four quantum numbers. b. Is iron paramagnetic? c. The valence electrons are located in which subshell(s)? 3. (5pnts) In the 5f subshell, what are the allowable values of mi? 4. (5pnts) Arrange the following elements in order of increasing atomic radius: calcium, magnesium, lead, arsenic, and selenium. Please use the chemical symbols of each element in your answer.Explanation / Answer
1)a) it is soluble in water as change in conductivity of water is noticed .Ionization of the compound must have taken place thereby increasing electron carriers in the solution in the form of cations (positively charged).Unless the compound dissolves it does not dissociate into ions as ions are stabilized by the polar aqueous solvent particles.
b)Must be ionic as ionization(dissociation into cations and anions) only can increase conductivity relatively.
c)flame test gives yellow if sodium is present in the compound in the form of ion like Na+ in NaCl