How many moles of CO2 are produced if 6 moles of O2 are used? How many moles of N_2 can be produced from 2.5 moles of O_2? Theoretically, how many moles of Bi_2S_3 can be formed from 20.1 g of H_2S and 126 g of Bi(NO_3)_3? 3 H_2S(...
百度试题 结果1 题目How many moles of Na+ ions are in 20 mL of 0.40 mol/LNa3PO4? ( ) A. 0.0080 B. 0.024 C. 0.050 D. 0.20 相关知识点: 试题来源: 解析 B 反馈 收藏
35 How many moles of hydrogen chloride are formed when one mole of methane is added to a large excess of chlorine in the dark? A 0 B 1 C 2 D 4 相关知识点: 试题来源: 解析 AAbsence of uv light, so no substitution occurs 反馈 收藏 ...
Consider the equation: 2H2O(l) 2H2(g) + O2(g) If 9 g of H2O decomposes according to the reaction shown above, how many moles of hydrogen gas are produced? a) 0.5 mol b) 1 mol c) 2 mol d) 4 mol How many moles of CO2 are produced when 5.70 mol of ethane are ...
题目16 How many moles of ions are present in 30 cm3 of 0.025 mol dm-3 barium hydroxide SO/ution,Ba(OH)_2(aq) C□ A C0.00075□ B 0.00150口 C 0.00225□D0.00450 相关知识点: 试题来源: 解析 CC is the correct answerBecause 30x0.025/1000x30=0.00225Question Number ...
Reaction: 2Q + 5R → 4S. If 10 moles of R react, how many moles of S are formed? A. 6 B. 8 C. 10 D. 12 相关知识点: 试题来源: 解析 B。5 摩尔 R 生成 4 摩尔 S,10 摩尔 R 生成的 S 的物质的量为 10÷5×4 = 8 摩尔。反馈 收藏 ...
1.72g of HCl is 1.72g / 36.5g/mol=0.047mol 3.40g of SO2 is 3.40g / 64g/mol=0.053mol 1dm^3=1L 1dm3 结果一 题目 calculate the number of moles present in 1.72g of hcl 3.40g of so22.how many moles in each of the following solutions.1dm3 of 1MHCL 答案 1.72g of HCl is...
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Fe+2HClrarrFeCl(2)+H(2) "Moles of Fe"^(2)+"Formed"=(1)/(2)xx"Moles of HCl used" =(1)/(2)xx(0.4xx500)/(1000)=0.1
Question 20 (2 points) How many moles of CaF2 will dissolve in 3.0 liters of 0.036 M NaF solution? (Ksp for CaF2 = 4.0 × 10- 11) O 3.7x10-10 2.3 x 10-8 四 O 1.0x 10-8 O 3.1 x 10-8 none of these The pH of a solution at 25°C in which [OH-] = 3....