The precipitate from Question 1 that possibly contains Ca, Mn, Fe, or Co, is washed twice, first with a 1 mL portion of 1 M NaOH and then with 1 mL of deionized water. The tube is centrifuged after each washing and the two supernatant liquids are discarded. Now the precipitate is treated with 1 mL of 6 M HNO3 and the test tube is heated briefly in a water bath. The test tube is then centrifuged, and the supernatant liquid is decanted and saved. (The Ca(OH)2 produced in Question 1 is acid soluble.) At this stage of the experiment, which elements could be found in the DECANTED LIQUID

Gymnast always perform on padded mats. how does the mats protect the gymnast

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which of the following are correct values for the ideal gas laws constant r