CHM 1045 Reactions and Stoichiometry In Class Questions 2. How many sodium atoms are in 0.120...

Question

Question

Answer 1

Answer #1

23 6.022 X 1D aloms O. 120 mol Na X 1 male Na 23 aiem 7.2264 X 10 23 atemo 2 2. 45 mo 6. 022 X1O Cu X Imale 24 aCema 11 1475

Answer 2

Similar Homework Help Questions

How many argon (Ar) atoms are found in 8.5 x 10-10 mol of argon? How many...

How many argon (Ar) atoms are found in 8.5 x 10-10 mol of argon? How many sulfur (S) atoms are there in 16.0 ng? How many copper (Cu) atoms are present in a 2.874 g sample?
How many atoms of copper (Cu) are contained in 1.75 moles of copper atoms? How many...

How many atoms of copper (Cu) are contained in 1.75 moles of copper atoms? How many moles of aluminum ions (Al 3+) are present in 7.25 x 1025 Al 3+ ions? How many moles of aspirin contain 8.62 x 10 28 molecules? How many sugar molecules are contained in 0.475 mole of sugar? What is the molar mass of nicotine (C10H14N2), the toxic and addictive stimulant in tobacco? In this balanced chemical equation, 2 C18H30O2 + 49O2 à 36 CO2...
2. Complete the following calculations: a. How many atoms are in 0.932 moles of copper? b....

2. Complete the following calculations: a. How many atoms are in 0.932 moles of copper? b. How many moles of water are in 9.028 x 1022 water molecules? C. What is the molar mass of calcium carbonate? d. How many grams of water are in a 1.02 mole sample of water? e. How many moles of methane are there in 278 g of methane?

Chapter 6 1.) How many atoms are in each elemental sample? Part A. 3.3 molCu Part B....

Chapter 6 1.) How many atoms are in each elemental sample? Part A. 3.3 molCu Part B. 8.7×10−3 mol C Part C. 24.5 mol Hg Part D. 0.300 mol Na 2.) 1 mol 6.022×10^23 Suppose you have 897 sheets of paper. Part D. How many moles of paper do you have? 3.) How many moles of atoms are in each elemental sample? Part A. 1.50 g Zn Part B. 28.9 g Ar Part C. 73.0 g Ta Part D. 2.28×10−2 g...
Chemical Quantities and Chemical Composition 1. How many atoms are in 15 moles of sodium? 2....

Chemical Quantities and Chemical Composition 1. How many atoms are in 15 moles of sodium? 2. How many moles are in 2.1 x 10^22 molecules of H2SO4? 3. How many atoms are in 7.22 moles of gold? 4. How many atoms are in 90.43 of Xenon? 5. How many grams do 1.96 x 10^24 atoms of sodium weight? 6. Calculate the molar mass of AgNO3. 7. Calculate the molar mass of Fe2O3. 8. Calculate the molar mass of CaCO3 9....
The mass of a copper atom is 1.045 x 10E -22 g. How many copper atoms...

The mass of a copper atom is 1.045 x 10E -22 g. How many copper atoms are present in a 94.5 g sample of copper? * Pick the best answer below. Reference lecture and PowerPoint a. 9.04 x 10 exp 23 b. 1.045 x 10 exp -22 c. 1870 d. 94.5

2. Consider sodium carbonate (Na2CO3). How many sodium atoms are present in 5.08 g of Na2CO:?...

2. Consider sodium carbonate (Na2CO3). How many sodium atoms are present in 5.08 g of Na2CO:? Hint: Start with determining the moles of sodium carbonate. First Name: Adarsh First Name: Last Name:
2) (4pts) Answer the following questions about sodium phosphate (NasPO.) How many oxygen atoms are in...

2) (4pts) Answer the following questions about sodium phosphate (NasPO.) How many oxygen atoms are in one molecule of sodium phosphate? many oxygen atoms do you have? If you have one dozen molecules of sodium phosphate, how many oxygen atoms do you h If you have one mole of sodium phosphate molecules, how many oxygen atoms do you have? (16 pts) Perform the following conversions: 3) a) 2.89 × 103 helium atoms into moles of helium atoms: b) 0.500 moles...
m105%20Makeup%20Exam%20(2).pdf 31) 31) To convert a given number of moles into the number of atoms, one...

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...

DATE 1. How many moles of Na are there in 47.3 g of Na? 2. Calculate...

DATE 1. How many moles of Na are there in 47.3 g of Na? 2. Calculate the number of grams of sulfur in 112.4 moles of sulfur. 3. Calculate number of atoms in 4.6 g of calcium. 4. How many H atoms are in 272.5 g of methanol, CH0? 5. For the given reaction N, (g) +3H,(g)->2NH(g) a. How many moles of NH, are formed by the complete reaction of 0.154 moles of H? b. How many grams of NH,...