Calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetroxide (N,04). Be sure your answer has a unit symbol if necessary, and round it to 4 significant digits.

Q: A sample of gas occupies 36.1 mL at a pressure of 656.5 torr. What is the new volume if the pressur...

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Q: What is the concentration of HNO3 if 9.80×10-2 mol are present in 775 mL of the solution?

A: Molarity is one of the ways to express the concentration of solution  We are required to find the co...

Q: 2MnO, + 5C,0;+ 16H* 4 4 2MN²+ + 10 CO, + 8H,0 Here, 20 mL of 0.1 M KMNO, is equivalent to

A: Given data : 20 mL of 0.1 M KMnO4   

Q: Mixing water and arterial fluid in the reservoir of the machine is called secondary dilution.  True...

A: mixture of arterial fluid  with water and /or supplemental fluids is called primary dilution.   

Q: Graph Analysis Individual Assessment Provide clear and concise explanation for each of the question ...

A: BC (2) and DE (4) represent phase transition of the system.

Q: Consider the decomposition of nitrosyl bromide into nitrogen monoxide and bromide gas, which has an ...

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Q: A dilute solution of hydrochloric acid with a mass of 606.87 g and containing 0.31625 mol of HCl was...

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Q: 3. Consider a 1.0 kg block of iron at 99°C placed in contact with a 1.0 kg block of iron at 25.0°C. ...

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Q: Acids and bases are among the most common and important compounds known.  Discuss an application of ...

A: An acid is a substance that give hydrogen ions in solution and a base is a substance that give hydro...

Q: How many calories of heat are required to melt 14 grams of ice at 0 0C?

A: The enthalpy change for melting ice is called the entlaphy of fusion. Its value is 6.02 kj/mol. This...

Q: Which of the statements about the discovery of electrons is FALSE?     Because atoms are neutral, t...

A: Answer : 4th option

Q: + CrPO, + 4. K;Cr20, + KI + H;PO4 5. K,Cr,O, K,PO, + H20 Cr;(SO,); + Fe,(SO,); + K,SO, + H,0 I2 + Fe...

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Q: Calculate the mass of camphor (C1,H1,0) that contains a billion (1.000 x 10°) carbon atoms. Be sure ...

A: We have to calculate the mass of camphor (C10H16O) containing 109 carbon atoms.

Q: Find n in mol. Show your solutions. P = 3.45 atm V = 93.38L T = 95.53 °C

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Q: P: 3.61 atm V: ml T: 51.59 °C n: 8.43 mol Question 8 Not yet answered Marked out of 2.00 P Flag ques...

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Q: Br Ph Br Br. Н. OH H- OH Br S. H- HO Me Ме HO. OH H- OH Но -H HO- OH H OH Но -H- HO OH но HO HO HO. ...

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Q: For the following reaction: 4HCN(l)+5O2(g)⟶2H2O(g)+4CO2(g)+2N2(g)  What is the change in free energ...

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Q: What is rhe name for S2Cl8?

A: Given: The chemical formula of the compound: S2Cl8It is composed of two sulfur atoms and 8 chlorine ...

Q: 12.58 grams potassium hydroxide dissolved in 100 mL ethanol. Give the molality and (%w/w).

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Q: Liquid hexane (CH,(CH,) CH,) reacts with gaseous oxygen gas (0,) to produce gaseous carbon dioxide (...

A: Hexane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical r...

Q: For a single-component system, the fundamental thermodynamic relation is given by dE = Tds – PdV + u...

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Q: Na,CO3(ag) + CaCl2(aq) 2 NaCl(aq) + CaCO3(s) Order the steps required to predict the volume (in mL) ...

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Q: Measurements show that the enthalpy of a mixture of gaseous reactants increases by 273. kJ during a ...

A: Given :  1. Change in Enthalpy = + 273 kJ  2. Work done = 122 kJ .  

Q: i just need help labeling the peaks

A: A question based on IR spectroscopy that is to be accomplished.

Q: 1. Which of the following compounds is a non-electrolyte when dissolved in water? a. sodium chloride...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: a) Theoretically speaking, if we fully combust 3.0 kg of octane, and keep the products at STP, what ...

A: (a) Octane combustion:                2 C8H18 (l) + 25 O2 (g) ⇔ 16 CO2 (g) + 18 H20 (l)             ...

Q: Jennifer produces 11.9 grams of calcium carbonate, CaCO3 in a chemistry lab. How many moles was made...

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Q: . What is the pH of a 0.202 M aqueous solution of sodium acetate, NaCH3COO? pH =  The solution is ...

A: sodium acetate, CH3COONa is a salt of a weak acid (CH3COOH) and strong base (NaOH). given, the conce...

Q: Is the following solution a buffer? Each solution was prepared by mixing and diluting appropriate qu...

A: An acid is a substance that give hydrogen ions in solution and a base is a substance that give hydro...

Q: Acetylene, C2H2, is a gas commonly used in welding. It is formed in the reaction of calcium carbide,...

A: Acetylene, C₂H₂, is a gas commonly used in welding. It is formed in the reaction of calcium carbide,...

Q: Convert 0.19 moles of carbon dioxide to grams of CO2.

A: Answer: This is question based on mole concept where each mole of the substance has a fixed mass cal...

Q: A mystery white powder is made up of 27% C, 9% H, and 64% F.  What is its empirical formula?

A: Given measurements, %C = 27 %, molar mass of C =12 g mol-1 %H=9% , molar mass=1.008 g mol-1 %F=64 % ...

Q: How would you prepare  x 10 ^2 mL of 0.9 M NaOH solution, starting from 5.01 M stock solution? (give...

A: Given that, M1=5.01 M, V1=? M2=0.9 M , V2= 2×102 ml = 200 ml  then,    

Q: An electrical engineer is analyzing an electroplating run and wants to calculate the charge that has...

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Q: 4. (i) Identify the different enthalpy changes and construct the Born-Haber cycle for the formation ...

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Q: 1. Look at the list of mixtures below. 2. Given the matter samples (mixtures) listed in the table, i...

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Q: The second ionization energy of Mg is 1445 kJ/mol. The first ionization energy is a) b) less than 14...

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Q: 4. K;Cr20, + KI + H;PO4 5. K,Cr,0, + FeSo, + H,SO, I2 + CrPO, + KPO4 + H;0 Cr,(SO.), + Fe;(SO,); + K...

A: Loss of electron is oxidation and Gain of electron is reduction.  On other hand we can say that, inc...

Q: 4. A system receives 75 J of electrical work, delivers 274 J of expansion work, and absorbs 168 J of...

A:   Givens :   Work done by the system ,                         W   = 274 joules Heat absorbed by the...

Q: This is the chemical formula for methyl tert-butyl ether (the clean-fuel gasoline additive MTBE): CH...

A: Given, moles of H = 93.9 moles  moles of O =?

Q: -1 1 and a temperature of 81.1 °C is placed into 2.00L of v

A: Using Heat conservation , Heat loss by metal = Heat gain by water  (m.s.□T)m = (m.s.□T)w Where,  m =...

Q: Methane (CH,) gas and oxygen (0,) gas react to form carbon dioxide (CO,) gas and water (H,0) vapor. ...

A: Given :-  Methane gas + oxygen gas → Carbon dioxide gas + water vapor  No of moles of CH4 = 9.0 mol ...

Q: While ethanol (CH,CH,OH) is produced naturally by fermentation, e.g. in beer- and wine-making, indus...

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Q: A reaction at 28.0 °C evolves 451. mmol of sulfur tetrafluoride gas. Calculate the volume of sulfur ...

A: Given :-  No.of moles of SF4 = 451. mmol  Temperature = 28.0°C  Pressure = 1 atm  To determine :-  V...

Q: In the determining the rate law for the crystal violet hydroxide ion reaction experiment, would you ...

A: The rate law or the rate equation for a chemical reaction relates the rate of the reaction with the ...

Q: 6. In emission, a) an electron moves from an excited state to a lower energy state, and energy is re...

A: An electron can move from one energy state to another by absorbing or releasing energy depending on ...

Q: 08 HI R A4 Z. M N K. P. B PgDn. 6 1 F10 PgUp ) End 64 7. F8 Home 9- 50 PrtScn 5. E. 94 F5 114 %24 3....

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Q: How many moles is 219 grams of copper (II) bromide, CuBr2?

A: Given that, mass of CuBr2 = 219 g molar mass of CuBr2= 223.37 g mol-1 moles of CuBr2 =?

Q: A bacteria which prefers aerobic conditions but can live without oxygen is labeled as ___.

A: The correct answer is given below

Q: Determine the product of the following reaction: a. O b. ○ニ

A: This is known as Diels Alder reaction in which [4+2] cycloaddition reaction occurs between diene and...