Homework Answers
Add Answer to:
11,12,13,14,15-- with clear explanatioms please. thanks so much 11. How many atoms of hydrogen are in 1.00'mole of w...
can you please explain the answers 19. One nanogram does not seem like a very large number. How many magnesium atoms...
can you please explain the answers
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10- atoms B) 2.48 x 10" atoms C) 6.83 x 10" atoms D) 6.02 x 10 atoms E) 1.46 x 10" atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10” mol...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10 atoms B) 2.48 x 10" atoms C) 6.83 x 10 atoms D) 6.02 x 10" atoms E) 1.46 x 104 atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10^mol E) 4.55 x 10" mol 21. Balance...
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...
24. Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? __PC(O) +_H...
24. Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? __PC(O) +_HO(1) ►_H3PO3(aq) + HCl(aq) A) 1 B) 2 C) 3 D) 5 E) none of these 25. How many atoms are in 5.54 g of F? A) 6.02 x 10- atoms B) 0.146 atoms C) 0.292 atoms D) 8.78 x 10" atoms E) 1.76 x 10" atoms silicon atoms is 26. The mass of 1.63 x 10 A) 2.71 x 10-...
can you please explain the answers 24. Balance the equation below using the smallest set of...
can you please explain the answers
24. Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? PCI;(1) + _H2O(l) → _H PO3(aq) +_HCl(aq) A) 1 B) 2 C) 3 D) 5 E) none of these 25. How many atoms are in 5.54 g of F2? A) 6.02 x 10” atoms B) 0.146 atoms C) 0.292 atoms D) 8.78 x 1022 atoms E) 1.76 x 10” atoms 26. The mass of 1.63 x...
31). 31) To convert a given number of moles into the number of atoms, one would...
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...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of sulfur 28) does this represent? A) 3.01 mol B) 1.81 mol C) 1.77 mol D) 1.09 mol E) 0.333 mol 29) When the equation below is balanced with the lowest possible whole number coefficients, what is the sum of the coefficients? 29) Ca(s) + HCl(r) → CaCl2(s) + H26) A) 2 B) 5 C) 4 D) 8 E) 10 o) Aspirin is the common...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
5) How many moles of hydrogen gas are needed to react with oxygen to form one...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
10) How many moles of carbon atoms are there in 0.500 mole of CaH-2 A) 0.500...
10) How many moles of carbon atoms are there in 0.500 mole of CaH-2 A) 0.500 moles B) 1.00 moles C) 3.00 moles D) 6.02 x 1023 moles E) 4.00 moles 11) How many grams of FerO3 are there in 0.500 mole of FeyOh A) 79.9 g B) 35.9 g C) 63.8 g D) 51.9 g E) 160. g 12) In the kinetic molecular theory of gas behavior, particles of a gas tend to move between them are and collisions...
can you please explain the answers
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10- atoms B) 2.48 x 10" atoms C) 6.83 x 10" atoms D) 6.02 x 10 atoms E) 1.46 x 10" atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10” mol...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10 atoms B) 2.48 x 10" atoms C) 6.83 x 10 atoms D) 6.02 x 10" atoms E) 1.46 x 104 atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10^mol E) 4.55 x 10" mol 21. Balance...
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...
24. Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? __PC(O) +_HO(1) ►_H3PO3(aq) + HCl(aq) A) 1 B) 2 C) 3 D) 5 E) none of these 25. How many atoms are in 5.54 g of F? A) 6.02 x 10- atoms B) 0.146 atoms C) 0.292 atoms D) 8.78 x 10" atoms E) 1.76 x 10" atoms silicon atoms is 26. The mass of 1.63 x 10 A) 2.71 x 10-...
can you please explain the answers
24. Balance the equation below using the smallest set of whole numbers. What is the coefficient of H2O? PCI;(1) + _H2O(l) → _H PO3(aq) +_HCl(aq) A) 1 B) 2 C) 3 D) 5 E) none of these 25. How many atoms are in 5.54 g of F2? A) 6.02 x 10” atoms B) 0.146 atoms C) 0.292 atoms D) 8.78 x 1022 atoms E) 1.76 x 10” atoms 26. The mass of 1.63 x...
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...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of sulfur 28) does this represent? A) 3.01 mol B) 1.81 mol C) 1.77 mol D) 1.09 mol E) 0.333 mol 29) When the equation below is balanced with the lowest possible whole number coefficients, what is the sum of the coefficients? 29) Ca(s) + HCl(r) → CaCl2(s) + H26) A) 2 B) 5 C) 4 D) 8 E) 10 o) Aspirin is the common...
6. Calculate each of the following: a. the number of atoms in 0.5 mol ofc b the number of So, molecules in 1.28 mol of SO c. the moles of Fe in a sample containing 5.22 x10 - atoms of Fe 7. Calculate the molar mass for each of the following use the periodic table for the atomic mass): H2SO4 Fe2O3 Al(SO.) Mg(OH)2 (NH4)2CO3 8. How many moles of Cl2 are there in 25 g of Ciz? 9. How many...
5) How many moles of hydrogen gas are needed to react with oxygen to form one mole of 5) water? 2H2(8) + O268) - 2H20(1) A) 4 mol B) 1 mol C) 2 mol D) 0.5 mol E) 6 mol 6) Incomplete combustion occurs when there is insufficient oxygen to react with a compound. The suffocating gas carbon monoxide is a product of incomplete combustion. How many moles of oxygen gas are required for the complete combustion of 11.0 moles...
10) How many moles of carbon atoms are there in 0.500 mole of CaH-2 A) 0.500 moles B) 1.00 moles C) 3.00 moles D) 6.02 x 1023 moles E) 4.00 moles 11) How many grams of FerO3 are there in 0.500 mole of FeyOh A) 79.9 g B) 35.9 g C) 63.8 g D) 51.9 g E) 160. g 12) In the kinetic molecular theory of gas behavior, particles of a gas tend to move between them are and collisions...
Most questions answered within 3 hours.
-
A sample of C3H8 has 1.60×1024 H atoms.
How many carbon atoms does the sample contain?...
asked 48 minutes ago -
How many unique codes are possibly formed from two characters,
where the first character can be...
asked 17 minutes ago -
A concentration cell is built based on the reaction:
2H+ + 2e- ----> H2
The pH...
asked 13 minutes ago -
what is the ph of the following solutions?
150 g NH4CI dissolved into 10.0 mL of...
asked 24 minutes ago -
A projectile is launched with an initial speed of 40 m/s at an
angle of 25°...
asked 7 minutes ago -
1. Using a function, display the customer who has the highest
credit limit. Display the customer...
asked 16 minutes ago -
A spatially uniform electric field varies in time according
to E = Eo + 3000 t,...
asked 41 minutes ago -
An electric power station that operates at 25 kV and uses a 20:1
step-up ideal transformer...
asked 34 minutes ago -
1. If 0.02% of a 0.6 M weak acid ionizes in a solution, what is
the...
asked 21 minutes ago -
The College of Business at Northeast College is accumulating
data as a first step in the...
asked 27 minutes ago -
A flint glass plate (n = 1.66) rests on the bottom of an
aquarium tank. The...
asked 36 minutes ago -
The position in an object as a function of time is given as ?
(?) =...
asked 51 minutes ago