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DQuestion 24 1 pts 24. Which of the following equations is not balanced? a. 4Al +302...
Cina learned how to balance chemical equations. Which of the following is NOT balanced a. 4Al +302 → 2Al;0; b. 2Na+ Cl2 → 2NaCl C. 2NaOH + HCI → NaCl + 2H2O d. 2K3PO4 + 3BaCl2 → Bax(PO4)2 +6KCI e. 2NaOH + H2SO4 → Na2SO. + H2O Answer:
Which one of the following chemical reaction equations is balanced? O A. 8HCI + 2KMnO4 → 3C12 + 2MnO2 + 4H2O + 2KCI O B. HCl + KMnO4 → cl2 + MnO2 + 2H2O + KCl C. 2HCl + 2KMnO4 → Cl2 + MnO2 + 2H2O + 2KCI O D. HCI + KMnO4 → Cl 2 + Mno2 + H20+ KCI ○ E. 6HCI + 2KMnO4 → 2C12 + 2MnO2 + 4H2O + 2KCI
1. What coefficients would balance the following equation? _Al + _02_Al2O3 O A 2Al +3021A1203 O B.2A1+302 > 2Al2O3 O C.3Al + 302 + 2A1203 O D. Al +302 → 2A1203 2. What coefficients would balance the following equation? _C2H + _02 +_CO2+ _H20 O A 1CH5 +502 + 2002 + 3H20 OB 2C H5 +502 + 4CO2 + 6H20 OC. 20 H6 + 702 + 4CO2 + 6H20 OD. 2CH3 + 1002 + 4CO2 + 6H20 3. Classify the...
QUESTIONS Which of the following reactions are metathesis reactions? (a) 2KciO3 2KCI+302 (b) Cu(NO3)2+ZnCu+Zn(NO,)2 (e) BaCOs + 2 HCBaCl2 +H20+Co2 (d) Na2CO, +Cuso Na,SO,+CuCO 1. 2a. How many grams of each of the following substances will dissolve in 100 mL of cold water? Consult a handbook or the Internet and cite your source. Ce(lO3)4 RaSO4 Pb(NO) (NH)SeO 2b. Which of these substances is least soluble on a gram-per-100 mL basis? 3. Suppose you have a solution that might contain any...
Which of the following chemical equations is balanced? Fe2O3 + CO → Fe + 2CO2 Na2SO2 + S → S2O3 + S 3CuO + 2NH3 → 3Cu + 3H2O + N2 4Al + 3Fe3O4 → 4Al2O3 + 9Fe
which of the following equations does not have 1:2:1:2 as rhe coefficient ratio when balanced? Which of the following equations does not have 1:2:1:2 as the coefficient ratio when balanced? Select one: oa. K+H,0 Hz + KOH o b. Ca(OH), + HCI -- CaCl2 + H20 O C.H2SO4 + KOH – K,SO4+H20 o d. CH + 02 - CO2 + H20
14. Which statement is true, based on the following balanced equation: Pé(s) + 502(g) → 2PzOs (S) If 0.5 mole of P4 is allowed to react with 2.5 moles of O2, which of the following will be true? a) the Pa will react completely b) the O2 will react completely c) 1 mole of P2Os will be formed d) a and b e) a, b, and c -28
Part 6 Determine the limiting reactant aivan 250 g of each reactant in the following C,H(1) + 302(g) 2002(g) + 3H20() ANSWER: CO2 CHO H2O 02 Part 1 Calculate the grams of CO, that would be produced. Express your answer with the appropriate units. ANSWER: m(CO2) =
1 pts DQuestion 3 Which of the following is the greatest contributor to the resonance hybrid for chlorite? 1- Cl: :O O: 1- Cl: :O 1- Cl: O: 1- CI :O O:
DQuestion 21 1 pts 53.13 2 Figure F3 Current-carrying square coil in magnetic field A square coil has N-40 turns of copper wire, each of side a-5.0 cm. The current in the coil is 1-4.0 A. The coil is placed in a uniform magnetic field B-16 T as shown in Figure F3. The plane of the coil makes an angle of 53.13 with the magnetic field. The coil is free to rotate about the y axis. Calculate the area of...