To start off your experiments in magnetism, you've decided to buy 423 moles of whichever elemental metal you decided on. Your supplier, an American smelter, lists the following prices: · Fe: $0.10 /lb • Mn: $1.30/lb V: $19.21/lb How much will it cost you to buy the 423 moles you need to get started?

A 2.540 g sample of an oxide of tin was heated in the air until the mass of the sample no longer changed, and 2.842 g of tin (IV) oxide (SnO2) was obtained as a result of the heating. b) What is the mass of tin in the final sample?

Three samples (A, B, and C) of pure substance composed ofsodium, sulfur, and oxygen were isolated and purified. Elemental analyses showed that sample-A contained 1.62 g sodium, 1.13 g sulfur and 2.25 g oxygen; sample-B contains 1.60 g sodium,2.23 g sulfur, and 1.67 g oxygen; while sample-C contains 1.46 g sodium, 1.02 g sulfur, and 2.03 g oxygen. Determine whether A, B,and Care samples of the same or different compounds.

Aunt Julie went to the jewelry store to buy a gift for her amiga. As an aunt from Poveda, she knows that the karat scale is based on mass percentages. She was also informed by Uncle Bruno that pure gold is equivalent to 24 karats. If she bought a bracelet made of gold alloy that is 50 mol% silver and 50 mol% gold, what is the karat number of the bracelet?

What Metal Types are the following elements?

Of the elements listed below, which one would be a poor conductor of heat and electricity? a) Mg b) Cs c) Se d) Sn e) Zn

Consider Molecule X, which is found in all living cells. This single-strand nucleic acid folds into a compact shape and forms a large complex with about 80 proteins. This complex is responsible for synthesizing new proteins in a living cell. What is the name of X? Your answer should be one word, or a short two- or three-word phrase. Spelling counts. Note: if there is more than one possible answer, separate each answer with a comma. ☐ ×

Part B Magnesium makes up 2.10 % by mass of the Earth's crust. How many grams of magnesium are present if a sample of the Earth's crust has a mass of 1.35 g ? Hν ΑΣφ

Potentially Useful Information Spectrochemical Series: I < Br < SCN° < Cl° < NO3¯ < F < OH° < C2O4²-~ H2O < NCS < NH3 < en < PPH3 A student has three test tubes containing a metal (M) nitrate solution M(NO3)2 (aq) (where "M" represents a generic transition metal). The student adds aqueous ammonia (NH3) to one test tube, aqueous hydrochloric acid (HCI) to the second tube, and nothing more to the third tube, but forgets to label the tubes. After this, one test tube contains a red solution, one an orange solution, and one a yellow solution. Note: This metal, M, would follow the same rules that we used for Cu(II), Ni(II), and Co(II). The Jahn-Teller Effect does not apply. Complete each statement or answer each question below about the solutions in the three test tubes. The coordination complex causing the orange solution causes a larger splitting between the d orbitals of the metal then the coordination complex causing the... O red solution. O yellow solution. What color light does the…

Please help me with this question! What would be the correct answers?