chemistry

posted by .

How many moles of magnesium is 1.25 x 1023 atoms of magnesium?
A. 0.208 × 101 mol Mg
B. 2.08 × 101 mol Mg
C. 2.08 × 10 -1 mol Mg
D. 20.8 mol Mg

I think it would be D

  • chemistry -

    Think a little more..

    you have 1.25e23 atoms, and there are 6.02e23 atom in one mole. dividing the first by the second yields 2.08e-1 mol Mg

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chem

    When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are produced. What volume of 1.0 M HCl is required to react completely with 4.00 g of magnesium i did 4.00g x (mol/24.31 g Mg) x (2 mol …
  2. Chem 101. Science

    Rank the following samples in mass from least to greatest. a) 2 x 1023 S atoms b) 0.25 mol of Cu atoms c) 2 mol of N atoms d) 6 x 1023 Na atoms
  3. Check a chemistry answer

    So I think I have done this problem right, I was just wondering if anyone would check over it for me. What mass (in grams) of P2O5 contains 1.20 x 1023 atoms of phosphorus?
  4. chemistry 101

    How many moles of oxygen are in 3.45 mol of diphosphorus pentoxide?
  5. chemistry

    How many moles are in 1.50 x 1023 molecules NH3?
  6. chemistry

    Calculate the number of moles in 75.0 g of oxygen gas. A. 2.34 mol O2 B. 4.69 mol O2 C. 750 mol O2 D. 12.5 × 1023 mol O2 B
  7. chemistry

    in the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 4.59 mol of magnesium and 4.59 mol of hydrochloric acid are reacted, how many moles of magnesium chloride are produced ?
  8. AP Chemistry

    The equilibrium constant for thermal dissociation of F2 F2(g)<->2F(g) is 0.300. If initially 1.00 mol F2 is placed in a 1.00 L container, which of the following is the correct number of moles of F2 that have dissociated at equilibrium?
  9. Chemistry

    How many moles are in 1.50 x 1023 molecules NH3?
  10. chemistry

    How many moles of magnesium chloride are formed when 55 mL of 0.70 M HCl is added to 42 mL of 1.204 g Mg(OH)2?

More Similar Questions