Using the balanced equation below, how many moles, №17886421, 20.12.2022 17:10

Chemistry

Using the balanced equation below, how many moles of water can be produced when 4 grams of Hydrogen react? 2H2(g)+O2(g) — 2H2O(I)

Step-by-step answer

P Answered by PhD

4 × 10 g

Explanation:

Step 1: Write the balanced equation

2 H₂(g) + O₂(g) ⇒ 2 H₂O(I)

Step 2: Calculate the moles corresponding to 4 g of H₂

The molar mass of H₂ is 2.02 g/mol.

4 g × 1 mol/2.02 g = 2 mol

Step 3: Calculate the moles of H₂O produced from 2 moles of H₂

The molar ratio of H₂ to H₂O is 2:2. The moles of H₂O produced are 2/2 × 2 mol = 2 mol.

Step 4: Calculate the mass corresponding to 2 moles of H₂O

The molar mass of H₂O is 18.02 g/mol.

2 mol × 18.02 g/mol = 4 × 10 g

Chemistry

Using the balanced equation below, how many moles of water can be produced when 4 grams of Hydrogen react?

Step-by-step answer

P Answered by PhD

2 moles of water (H₂O)

Explanation:

We'll begin by calculating the number of mole in 4 g of Hydrogen. This can be obtained as follow:

Mass of H₂ = 4 g

Molar mass of H₂ = 2 × 1 = 2 g/mol

Mole of H₂ =?

Mole = mass / Molar mass

Mole of H₂ = 4/2

Mole of H₂ = 2 moles

Finally, we shall determine the number of mole of water (H₂O) produced by the reaction of 4 g (i.e 2 moles) of H₂. This can be obtained as follow:

2H₂ + O₂ —> 2H₂O

From the balanced equation above, we can see that 2 moles of H₂ reacted to produce 2 moles of H₂O.

Thus, 2 moles of water (H₂O) were obtained from the reaction.

Chemistry

26.how many atoms of oxygen are represented in 3ba(clo3)2? a.3 b.6 c.9 d.18 27.how many atoms of oxygen are represented in 3fe(no3)2? a.3 b.6 c.12 d.18 28.when the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of h2o? fe (s) + h2o (g) fe3o4 (s) + h2 (g) a.2 b.4 c.6 d.8 29.which chemical equation below is balanced correctly? a.2h2o h2 + o2 b.ch4 + 3o2 co2 + 2h2o c.al4c3 + 3h2o ch4 + 4al(oh)3 d.zn + 2hcl zncl2 + h2 30.when the following equation is balanced with the lowest whole

Step-by-step answer

P Answered by PhD

16

Please check the only final answers here below and, please find attached file of word document which has the full and complete answers and explanations to all parts of your question.

26- the correct answer is ( D )18

27- the correct answer is D 18 atoms
28- the correct answer is B 4

29- the correct answer is D Zn + 2HCl→ ZnCl2 + H2

30-∴ the correct answer is B 2

31- the correct answer is D 10

32- the correct answer is C 2
33- the correct answer is D HCl is the limiting reactant, 5.8 mol of H2 can be formed

34- the correct answer is B 20.6 g

35- the correct answer is C 35.88 g

36- the correct answer is D 277 g

37- the correct answer is C

38- the correct answer is C 2,1,1,2

39- the correct answer is A) K2SO4 + 2 Ca(NO3)2→ 2KNO3 + 2CaSO4

40- The correct answer is (A ) K2S + COCl2→ 2 KCl + COS

41- the correct answer is (B) water (H2O) is always a product

42- the correct answer is B 2.2 mol

43- the correct answer is (C) Al is the limiting reactant, 5.3 moles of H2 can be formed

44- the correct answer is (D ) 6.8 moles

45- the correct answer is A 75.4 %

Chemistry

26.how many atoms of oxygen are represented in 3ba(clo3)2? a.3 b.6 c.9 d.18 27.how many atoms of oxygen are represented in 3fe(no3)2? a.3 b.6 c.12 d.18 28.when the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of h2o? fe (s) + h2o (g) fe3o4 (s) + h2 (g) a.2 b.4 c.6 d.8 29.which chemical equation below is balanced correctly? a.2h2o h2 + o2 b.ch4 + 3o2 co2 + 2h2o c.al4c3 + 3h2o ch4 + 4al(oh)3 d.zn + 2hcl zncl2 + h2 30.when the following equation is balanced with the lowest whole

Step-by-step answer

P Answered by PhD

16

Please check the only final answers here below and, please find attached file of word document which has the full and complete answers and explanations to all parts of your question.

26- the correct answer is ( D )18

27- the correct answer is D 18 atoms
28- the correct answer is B 4

29- the correct answer is D Zn + 2HCl→ ZnCl2 + H2

30-∴ the correct answer is B 2

31- the correct answer is D 10

32- the correct answer is C 2
33- the correct answer is D HCl is the limiting reactant, 5.8 mol of H2 can be formed

34- the correct answer is B 20.6 g

35- the correct answer is C 35.88 g

36- the correct answer is D 277 g

37- the correct answer is C

38- the correct answer is C 2,1,1,2

39- the correct answer is A) K2SO4 + 2 Ca(NO3)2→ 2KNO3 + 2CaSO4

40- The correct answer is (A ) K2S + COCl2→ 2 KCl + COS

41- the correct answer is (B) water (H2O) is always a product

42- the correct answer is B 2.2 mol

43- the correct answer is (C) Al is the limiting reactant, 5.3 moles of H2 can be formed

44- the correct answer is (D ) 6.8 moles

45- the correct answer is A 75.4 %

Chemistry

At stp how many liters of oxygen are required to react completely with 4.5 liters of hydrogen to form water? 2h2(g)+o2(g)— 2h2o(g) 1.8 l 3.0 l 9.0 l 2.0 l how many moles of aluminum are needed to react completely with 4.9 mol of feo? 2al(s)+3feo(s)— 3fe(s)*al2o3(s) 4.9 mol of al 0.8 mol of al 3.3 mol of al 7.4 mol of al you are required to use the molar mass in all of the following stoichiometric calculations except volume-volume problems mass-mass problems mass-particle problems mass-volume problems iron(lll) oxide is formed when iron combines

Step-by-step answer

P Answered by PhD

1

Do you have the answers i need help

Chemistry

At stp how many liters of oxygen are required to react completely with 4.5 liters of hydrogen to form water? 2h2(g)+o2(g)— 2h2o(g) 1.8 l 3.0 l 9.0 l 2.0 l how many moles of aluminum are needed to react completely with 4.9 mol of feo? 2al(s)+3feo(s)— 3fe(s)*al2o3(s) 4.9 mol of al 0.8 mol of al 3.3 mol of al 7.4 mol of al you are required to use the molar mass in all of the following stoichiometric calculations except volume-volume problems mass-mass problems mass-particle problems mass-volume problems iron(lll) oxide is formed when iron combines

Step-by-step answer

P Answered by PhD

1

Do you have the answers i need help

Chemistry

1. Calculate the number of moles of carbon dioxide formed when 40.0 moles of oxygen is consumed in the burning of propane. Note the equation is unbalanced. C3H8 + O2 --- CO2 + H2O a. 40.0 mol CO2 b. 42.0 mol CO2 c. 20.0 mol CO2 d. 24.0 mol CO2 2. Iron reacts with superheated steam to form hydrogen gas and the oxide Fe3O4. Calculate the number of moles of hydrogen produced by 10.0 g of iron and enough steam. 3Fe (s) + 4H2O (g) --- Fe3O4 (s) + 4H2 (g) a. 0.239 mol H2 b. 239 mol H2 c. 2.39 mol H2 d. 2239 mol H2 3. Iron (III) oxide, also known as rust

Step-by-step answer

P Answered by Master

2

1. D (24.0 moles CO2)

2. A (.239 moles H2)

Explanation:

1. First Balance the equation

1 C3H8 + 5 O2 ---> 3 CO2 + 4 H2O

Then set up a stoiciometric equation so that the moles of O2 cancel out

40mol O2 x $\frac{3 mole CO2}{5 mole O2}$ = 24.0 moles CO2

2. Set up a stoichiometric equation

10 grams Fe x $\frac{1 mole Fe}{55.85 grams Fe}$ x $\frac{4 mole H2}{3 mole Fe}$ = 0.239 moles H2

Chemistry

1. Calculate the number of moles of carbon dioxide formed when 40.0 moles of oxygen is consumed in the burning of propane. Note the equation is unbalanced. C3H8 + O2 --- CO2 + H2O a. 40.0 mol CO2 b. 42.0 mol CO2 c. 20.0 mol CO2 d. 24.0 mol CO2 2. Iron reacts with superheated steam to form hydrogen gas and the oxide Fe3O4. Calculate the number of moles of hydrogen produced by 10.0 g of iron and enough steam. 3Fe (s) + 4H2O (g) --- Fe3O4 (s) + 4H2 (g) a. 0.239 mol H2 b. 239 mol H2 c. 2.39 mol H2 d. 2239 mol H2 3. Iron (III) oxide, also known as rust

Step-by-step answer

P Answered by Specialist

2

1. D (24.0 moles CO2)

2. A (.239 moles H2)

Explanation:

1. First Balance the equation

1 C3H8 + 5 O2 ---> 3 CO2 + 4 H2O

Then set up a stoiciometric equation so that the moles of O2 cancel out

40mol O2 x $\frac{3 mole CO2}{5 mole O2}$ = 24.0 moles CO2

2. Set up a stoichiometric equation

10 grams Fe x $\frac{1 mole Fe}{55.85 grams Fe}$ x $\frac{4 mole H2}{3 mole Fe}$ = 0.239 moles H2

Chemistry

How many moles of HF are in 30.mL of 0.15MHF(aq) ?

Step-by-step answer

P Answered by Master

Answer: 0.0045 mol
Explanation: Convert 30 ml to l: 30 mL = 0.03 L
Molarity = mol/l
mol = molarity * L
mol = 0.15 * 0.03 = 0.0045 mol
Answer: 0.0045 mol
Explanation: Convert 30 ml to l: 30 mL = 0.03 L
Molarity = mol/l
mol = molarit

Chemistry

What elements combined with Strontium, St, in a 1:1 ratio?

Step-by-step answer

P Answered by PhD

Answer: chalcogens.
Explanation: Strontium is an alkaline earth metal, it always exhibits a degree of oxidation in its compounds +2.
Chalcogens are a group of 6 chemical elements (oxygen O, sulfur S, selenium se, tellurium te, polonium Po) that have an oxidation state of -2 => Chalcogens will combine with strontium in a ratio of 1:1.

Using the balanced equation below, how many moles of water can be produced when 4 grams of Hydrogen react? 2H2(g)+O2(g) —> 2H2O(I)

Step-by-step answer

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