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- Citric acid is con-centrated in citrus fruits andplays a central metabolic role innearly every animal and plantcell. (a) What are the molarmass and formula of citric acid?(b) How many moles of citricacid are in 1.50 qt of lemonjuice (d=1.09 g/mL) that is 6.82% citric acid by mass?For this reaction, 2 NH3 + CO2 --> H2NCONH2 + H2O how many moles of CO2 are required to produce 3.0 moles of H2NCONH2?how many moles of cobalt (III) bromide are obtained when 11.98 moles of bromine react with excess solid cobalt? assume the reaction is 100% effiecent answer to 4 sig figs 2 Co(s) + 3 Br2(I) --> 2 CoBr3(s)
- Fe2O3 (s) + 3CO (g) ------> 2Fe (s) + CO2 (g)Based on the above reaction, 25.0g Fe2O3 and 25.0g COHow many grams of Fe are obtained when used?1.) If 13.0 mL of acetic acid was mixed with 20.0 g of sodium bicarbonate, which is the limiting reactant? Support with work. 2.) Using the equation, NaHCO3+ HCH3CO2 ----> NaCH3CO2+ H2O + CO2, how many grams of CO2 is produced from the reaction? How many moles is this? 3.) Using the equation, NaHCO3+ HCH3CO2 ----> NaCH3CO2+ H2O + CO2 and assuming the barometric pressure is 1 atm, and the temperature is 25 degrees celcius, what is the volume of the CO2 produced? Temperature of acetic acid: melting point is at 16.73°C and normal boiling point at 117.9°C. Pressure of acetic acid: 15.7 mmHg at 25°C Density of acetic acid: 1.05 g/cm3reactant amount : ~12 mL of a 0.320g/mL aqueous FeCl3s
- Consider this reaction: 3 H2 + N2 --> 2 NH3 a) How many moles of H2 are required to make 30 moles of NH3? b) How many grams of H2 are needed to product 30.0 grams NH3?The percentage yield of the f.f reaction is 90% CH4(g)+ S(g) ----> CS2(g)+H2S(g) how many grams of CH4(g) would be needed to obtain 80.0g of CS2Determine the limiting and excess reactants in the following problems. Show complete soultions. 1. Given 25 g of hydrochloric acid and 5o grams of Na2SO4 2HCL + Na2SO4 --- 10CO2 + 12H2O
- Given the reaction below, how many moles of Na 2SiO 3 are required to react completely with 0.914 moles of HF? 8HF (aq) + Na 2SiO 3 (s) -> H 2SiF 6 (aq) + 2NaF (aq) + 3H 2O (l) 7.31 moles Na2SiO3 0.171 moles Na2SiO3 1.09 moles Na2SiO3 0.114 moles Na2SiO3Proactinium is a highly toxic metal and one of the rarest found on Earth. One method for preparing pure proactinium is: 2 PaI5 -----------> 2 Pa + 5 I2 How many grams of proactinium can be prepared from 15.8 g of PaI5?*1 H3PO4 (aq) + 1 NaOH (aq) -> _____; ΔH° = -81.13 kJ I and II. If you have 12 mL of 0.29 M H3PO4, how many moles of phosphoric acid are present? III. How many protons and e- do the H+ ions have? IV. Is H3PO4 an ionic compound, a covalent compound or an acid? What is the name for H3PO4(aq)? V. Complete the above reaction given that only “one” sodium hydroxide is added. VI. How many mL of 0.10 M NaOH will be required to react with 12 mL of 0.29 M H3PO4? VII. What is the net ionic equation for this equation? VIII. Identify this reaction: a. b. c. IX. Draw the best Lewis structure for H3PO4(aq). What is the geometry and bond angle around the phosphorous atom? What is the P- O- H bond angle? X. What is the ΔH°f for the product containing phosphate, given the ΔH°f values for the following compounds? H3PO4 (aq): -1279 kJ NaOH (aq): -469.2 kJ H2O (l): -285.4 kJ *____ NO2 (g) + ____F2 (g) -> ____ FNO2 (g) I and II. If you have 0.752 L of F2 at 298 K and 1.78 atm, how many moles of F2 are…