How many atoms of neon are in 0.378 g of neon? Select the correct answer below...
COD 15:16 1/24 How many atoms are in 2.52 g of helium? Select the correct answer below. O 2.41 x 1024 atoms 2 9.57 * 102 totris O 1.62 x 10% atoms 3.79 x 10 atoms FEEDBACK وان ااااااااااات
How many atoms are in 5.27 g of zirconium? Select the correct answer below: 0 3.17 x 10atoms O 1.04 x 1025 atoms O 5.49 x 1025 atoms o o 3.48 10% atoms Content attribution
3) Calculate the percentage by mass of hydrogen in PtCl2(NH3)2 A) 0.672 B) 2.016 C) 1.008 D) 0.034 E) 1.558 4) How many molecules of CH4 are in 48.2 g of this compound? A) 1.81 x 1024 B) 4.00 C) 2.00 x 1023 D) 4.64 x 1026 E) 5.00 x 10-24 5) A sample of CH2F2 with a mass of 19 g contains A) 9.5 B) 3.3 * 1024 C) 2.2 x 1023 atoms of F. D) 4.4 x 1023...
5. (2 points) How many photons are emitted from neon gas if all the atoms of a 20.18 g sample relax from an n 6 excited state back to an n 1 ground state? A. 7.221 x 1024 B. 6.022 x 102 C. 5.022 x 1022 D. 3.011 x 1024 E. 1.507 x 103
How many atoms of copper are in 2.50 mol Cu metal? Group of answer choices I 1.51 x 1023 atoms 2.41 x 1024 atoms 1.51 x 1022 atoms 1.51 x 1024 atoms 2.41 x 102 atoms
51. How many atoms of aluminum can be produced by the decomposition of 13.3 g of aluminum oxide? (Hint: Write down the balanced equation before solving.) a. 3.14 x 1023 aluminum atoms b. 1.57 % 1023 aluminum atoms c. 7.86 x 1022 aluminum atoms d. 3.93 x 1022 aluminum atoms e. None of these
How many carbon atoms are in 8.44 mL of C3H6O? 1 mole = 6.02 x 1023 atoms 1 mL = 0.898 g The answer has to be in the correct significant figures. Not sure how to do this.
ENERAL CHEMISTRY 1/ will exe? Destion 4 ot yet nswered How many hydrogen atoms are there in 0.402 g of water? Molar mass: H20 = 18.02 g/mol; Avogadro No. = 6.022 x 1023 arked out of 67 Flag uestion Select one: a. 1.20 x 1022 b. 4.02 x 1022 C 2.71 x 1023 d. 1.34 x 1023 e. 2.69 x 1022
how many atoms can be found in a mole of mercury
How many atoms can be found in a mole of mercury? 6.02 x 102 atoms 201 atoms 121 x 10 atoms
Pr Nd Ac Th Pa U Np Pu "Am "Cm "BK How many atoms are in 9.61 g of germanium? Select the correct answer below: O 7.97 x 1022 atoms 5.79 10% atoms ooo 4.55 x 10% atoms 4.37 x 10" atoms Content attribution QUESTION 10.1 POINT Use the Periodic Table below to answer the question that follows