What is the number of manganese atoms that equal a mass of 54.94 amu ?
What is the number of manganese atoms that equal a mass of 54.94 g ? Select one: a. 1 b. 25 c. 55 d. 6.02x10^23 e. none of the above
m105%20Makeup%20Exam%20(2).pdf 31) 31) To convert a given number of moles into the number of atoms, one would multiply by which of the following factors? A) 1.66 x 10-24 atoms/I mol B) 1 mol/6.022 1023 atoms C) molar mass D) 6.022 * 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 3 2) 32) How many atoms of sulfur are present in a 155 g sample of sulfur? [Molar mass: S 32.06 g/mol) A) 6.02 x 1023 atoms B) 2.91 x...
A) C) electrons directo r y D) nutes dregte weerwyl E) none of the above 5.93 Teter Chapter 34) Mow many atoms of cobalt quadass Periodic Table.) A) 1 B) 27 C) 58.93 D) 59 E) 6.02 x 1023 35) What is the number of magnesium atoms that equal a mass of 24.5 A) 1 B) 12 C) 24 D) 6.02 x 1023 E) none of the above 36) Which of the following is equal to 1.00 mole of substance?...
what is the predicted product from the following combination
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E) none of the above 33) Which of the following produces the characteristic color of a fireworks display? A) atoms exploding B) molecules exploding C) electrons dropping to lower energy levels D) nuclei dropping to lower energy levels E) none of the above Chapter 8 34) How many atoms of cobalt equal a mass of 58.93 g? (Refer to the Periodic Table.) A) 1 B) 27 C) 58.93 D) 59...
31). 31) To convert a given number of moles into the number of atoms, one would multiply by which of the following factors? A) 1.66 x 10-24 atoms/1 mol B) 1 mol/6.022 x 1023 atoms C) molar mass D) 6.022 x 1023 atoms/1 mol E) 1 mol/1.66 x 10-24 atoms 32) 32) How many atoms of sulfur are present in a 155 g sample of sulfur? [Molar mass: S, 32.06 g/mol] A) 6.02 x 1023 atoms B) 2.91 x 1023...
1. 24.8 g of oxygen contains a. 9.33 x 1023 oxygen atoms b. 50 amu c. none of these d. 1.49 x 1025 oxygen molecules e. 1.55 mol of oxygen molecules 2. 1.2 moles of oxygen atoms represent a. 0.4 g b. 0.72 x 1024 atoms c. 1.9 x 101 atoms d. 1.0 x 102 g e. none of these
10. What is the total number of atoms contained in 2.11 moles of nickel? A. 2.85 x 1023 atoms B. 1.27 x 1024 atoms C. 3.50 x 10 24 atoms D. 6.02 x 1023 atoms
The number of atoms in one mole of an element is identified as A) 6.02 x 10^-2 atoms B) 6.02 x 10^2 atoms C) 6.02 x 10^23 atoms D) none of the above
1. What is the formula mass of Al(NO2)3? A. 72.99 amu B. 165.01 amu C. 56.99 amu D. None of these choices is correct E. 120.99 amu
Find the number of atoms in a nickel coin. A nickel coin has a mass of about 5 g. Each mole (6.02 1023 atoms) has a mass of about 58 g.