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Q: How many moles of ammonia would be required to react exactly with 0.470 moles of copper(II) oxide in…
A: Given: moles of CuO = 0.470 mol
Q: How many moles of ammonia would be required to react exactly with 0.616 moles of copper(1I) oxide in…
A: 2NH3 + 3CuO -------------------------> 3Cu + N2 + 3 H2O
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- The use of silica to form slag in the production of phospho-rus from phosphate rock was introduced by Robert Boyle morethan 300 years ago. When fluorapatite [Ca₅(PO₄)₃F] is used inphosphorus production, most of the fluorine atoms appear in theslag, but some end up in toxic and corrosive SiF₄ (g).(a) If 15% by mass of the fluorine in 100. kg of Ca₅(PO₄)₃F forms SiF₄, what volume of this gas is collected at 1.00 atm andthe industrial furnace temperature of 1450.°C?(b) In some facilities, the SiF₄ is used to produce sodium hexa-fluorosilicate (Na₄SiF₆) which is sold for water fluoridation: 2SiF₄(g)+Na₂CO₃(s)+H₂O(l) →Na₂SiF₆(aq)+SiO₂(s)+CO₂(g)+2HF(aq) How many cubic meters of drinking water can be fluoridated toa level of 1.0 ppm of Fusing the SiF₄ produced in part (a)?Mo in a 0.2711g sample was precipitated giving 1.1682g of (NH4)2PO4.12 MoO3. Find the percentage Mo , P (at wt = 30.97), N=14,Mo=95.9,H=1,O=16A risk is a source of potential damageChemical safety is a condition of being safe from the occurrence of chemical incidentsEnthalpy is shown in TCE'sTorrefaction is the process used in making a charcoalA.) If all 4 statements are trueB.) If 3 of the 4 statements are trueC.) If 2 of the 4 statements are trueD.) If only 1 of the 4 statements is trueE.) If none of the 4 statements is true
- Gaseous F2reacts with water to form HF and O₂,. In NaOH solution, F₂, forms F⁻, water, and oxygen difluoride (OF₂,), ahighly toxic gas and powerful oxidizing agent. The OF₂, reacts with excess OH, forming O₂,, water, and F⁻. (a) For each reac-tion, write a balanced equation, give the oxidation state of O inall compounds, and identify the oxidizing and reducing agents.(b) Draw a Lewis structure for OF₂,, and predict its shape.Gold is produced electrochemically from an aqueous solution of Au(CN)2 containing an excess of CN. Gold metal and oxygen gas are produced at the electrodes. What amount (moles) of O2 will be produced during the production of 1.00 mole of gold?Done < HIIL Attempts done: 0/2 O Zn²+ O Zn O Zn²- O Zn+ What is the most common oxidation state for zinc? > AA A practice.flatworld kn Read the related chapter ? View available hints Report an error
- matter eith constant composition in its structure is classified as?The most important commercial ore of chromiumis chromite (FeC r 2 O 4 ). One of the steps in theprocess used to extract chromium from the ore is thereaction of chromite with coke (carbon) to produceferrochrome (FeC r 2 ).2C(s) + FeC r 2 O 4 (s) → FeC r 2 (s) + 2C O 2 (g)What mole ratio would you use to convert from molesof chromite to moles of ferrochrome?One method of removing CO2(g) from a spacecraft is to allow the CO2 to react with LiOH. 2LiOH(s)+CO2(g)→Li2CO3(s)+H2O(l) How many liters of CO2(g) at 23.6 ∘C and 1.00 barr can be removed per 9 kg of LiOH consumed?
- Pure copper may be produced by the reaction of copper(I) sulfide withexcess oxygen gas as follows:Cu2S(s) + O2(g) ---> 2Cu(s) + SO2(g)What mass of copper(I) sulfide is required in order to prepare 0.610 kg ofcopper metal?A. 0.610 kgB. 0.764 kgC. 0.305 kgD. 0.459____ NaHCO₃, → ____ CO₂ + ____H₂O + _____Na₂CO₃ Suppose you want to produce 2.00 L of CO2 at STP What mass of sodiumbicarbonate should you use?Which member of each pair gives the more basicsolution inwater: (a) CaO or SO₃; (b) BeO or BaO; (c) CO₂ or SO₂; (d) P₄O₁₀ or K₂O? For the pair in part (a), write an equation for the dissolving of each oxide to support your answer.
