Consider " 2 S2O32-". Which of the following statements is FALSE?
There are 3 O atoms contained in each unit.
There are 4 S atoms contained in two units.
Each unit of S2032 has a ratio of 1 S: 1.5 O
Two units of S2032 have an overall charge of -4.
10 atoms are all connected together.
The chemical equation H2 (3)+ O2 (3)>H2O (3) is not balanced. This equation CANNOT be balanced by adding a subscript of 2 behind the oxygen in H20. In other words, you cannot balance the equation this way: H2 (8)+O2 (3) >H202 (3). Why?
You can only add coefficients when balancing equations so the way to balance the equation would be to show H220 (g) as the product.
The best way to balance the equation would be to remove the subscript of 2 on the reactant oxygen and show H2 (g) +O(g) >H2O (g).
You CAN do this. By placing the 2 behind the oxygen in water, you are creating a balanced chemical equation.
Changing H20 to H2O2 changes the kinds of molecules and completely changes the meaning of a reaction.
Consider the combustion of ethane gas, C2H6. In the balanced chemical equation, what are the lowest, whole number coefficients? Match the number to the species. C2H6+ 02>CO2+H2O
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1) Give the scientific reasoning why one should balance the chemical equation? 2) how do you check if a given chemical equation is balanced? Give a precise statement. 3) To balance this equation: C2H6 + O2 CO2 + H20 a) which element you balance first? which element you balance the last? b) what are the final coefficients before each compound after you have balanced the equation?
Chem Concepts Pre.Lab.pdf (page 2 of 2) ﹀ Q Search 7. Balance the following chemical equation. What is the coefficient in front of H,0? (2 pts) Mg(OH)2 (aq) + H2SO4 (aq) → MgSO4 (aq) + H2O (の 8. Balance the following chemical equation. What is the coefficient in front of H20? (2 pts) C2H6 (g) + O2 (g) → CO2 (g) + H2O () 9. Use the following balanced chemical equation to answer the question. CH4 + 4Cl2 → CC1,...
QUESTION 1 Balance the equation: Al203 02 Al QUESTION 2 Balance the equation Hа0 CO2 O2 -> C2H6 QUESTION 3 Balance the equation: Caso4 Al(OH)3 Caа(ОН)2 Al2(S04)3 + QUESTION 4 Which chemical equation is properly balanced? 2 SO2 O2 2 H30 -2 H2SO4 so2+O2+ H20> H2$O4 So2+O2+4 H202 H2SO4 4 SO O24 H20-4 H2SO4 answers
Which of the following statements is false concerning the reaction of hydrogen gas and oxygen gas given below? H2(g)+1/2O2(g)>H2O Which of the following statements is false concerning the reaction of hydrogen gas and oxygen gas given below? H2(g) +029) - H20(1; AH = -285.8 kJ Select one: a. For the reaction H2(g) + O2(g) - H2O(g), AH is not equal to -285 b. If the equation is reversed, AH becomes +285.8 kJ. If the equation is multiplied by 2, AH...
W Yuestion 18. 20. These questions relate to combustion of hydrocarbons. a. LPG (liquid petroleum gas) is mostly propane, CzHg. Balance this equation. C3H2(g) + O2(g) → CO2(g) + H20(3) b. Cigarette lighters burn butane, C4H10. Write a balanced equation, assuming complete combustion, that is, plenty of oxygen. c. With a limited supply of oxygen, both propane and butane can burn incompletely to form carbon monoxide. Write balanced equations for both reactions. Wle of Elements 888 299 $999999999 The Air...
When sodium hydroxide (molecular formula NaOH, consisting of one sodium atom Na, one oxygen atom O, and one hydrogen atom H) is mixed with sulfur dioxide (molecular formula SO2, consisting of one sulfur atom S and two oxygen atoms O), the chemical reaction produces sodium sulfite (molecular formula Na2SO3, consisting of two atoms sodium Na, one atom sulfur S, and three atoms oxygen O) and water (molecular formula H20, consisting of two atoms hydrogen H and one atom oxygen O)....
Question 4 1 pts Which of the following mole ratios CANNOT be derived from the reaction 2 502 (g) + O2 (g) + 2 H20 (1) --> 2 H2SO4 (aq) ? 02 mol SO2 2 mol H2SO4 2 mol H2SO4 2 mol O2 0 1 mol O2 2 mol H20 O 2 mol O2 1 mol O2 2 mol H20 2 mol SO2 Question 1 1 pts What do the coefficients in a balanced equation tell us? Mark ALL that...
Which of the statements below concerning how to balance chemical reactions is FALSE? to find the total numbers of each type of atom in a compound, you can multiply the subscript by the coefficient You cannot change the coefficients (big numbers) in front of the compound, since that changes the identity of the compound If you don't see a coefficient or a subscript written, you assume it means "1" you can change coefficient numbers in order to balance out the...
Consider the following balanced equation: 2H2 + O2 --------> 2H2O If you start with 8.133 g of H2 and 3.425 g of O2, find the following: a) With excess O2, what mass (grams) of H2O would be produced by the H2? b) With excess H2, what mass (grams) of H2O would be produced by the O2? c) What is the chemical formula for the limiting reactant?
This test does not allow backtracking. Changes to the answer after submission an Remaining Time: 59 minutes, 52 seconds. Question Completion Status: -> Moving to the next question prevents changes to this answer. Question 1 Which of the following chemical equation is balanced? a) S(s) + O2(g) → SO3(g) b) 2Ga(s) + 3C12(9) — 2GaCl3(s) c) H2(g) + O2(g) + H20(g) d) C3H8(9) + 402(g) 3CO2(g) + 4H2O(g) > A Moving to the next question prevents changes to this answer....