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Predict the products and write a balanced equation for each of the following: (8.1, 8.2, 8.3)
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Basic Chemistry
- 6.(0-2) Black powder was invented in China in the 9th century. It was used as an explosive with propelling properties. Today it is used in fireworks, model rocket engines, and replica black powder weapons. Black powder consists of potassium nitrate (potassium nitrate, KN03), charcoal and sulfur. A variety of chemical reactions take place when this mixture is exploded. One of these is shown below. 2KNO, +S+ 30 → K, S+N, ↑+3C0, 1 Knowing that carbon makes up 15% of the black powder, calculate the total volume of gases (under normal conditions) released when 0.1 kg of black powder explodes. Assume that only the chemical reaction given above occurs.arrow_forward(5.8)Which of the following reactions will form a gaseous product? O H₂CO3(aq) + Pb(NO3)2(aq) O NaOH(aq) + HNO3(aq) O None of these O Na₂SO3(aq) + H₂SO4(aq) ◄ Previousarrow_forwardWhen 1.0 g of gasoline burns, it releases 11 kcal. The density of gasoline is 0.74 g/mL. (3.4, 3.6) How many megajoules are released when 1.0 gal of gasoline burns? If a television requires 150 kJ/h to run, how many hours can the television run on the energy provided by 1.0 gal of gasoline?arrow_forward
- does it compare with the known melting and boiling point? (1) 9. The average kinetic energy of water molecules is a measure of the temperature of water. When the temperature of water remains constant the average kinetic energy of the molecules remains constant, even though the water is being heated by the Bunsen flame. So, energy is being taken in by the water, but it is not being used to increase the kinetic energy of the molecules. 9.1 What type of energy are the water molecules gaining during a phase change? (1) 9.2 Explain your reasoning (to question 9.1) with reference to the kinetic theory of matter. 10. Write the conclusion. (3) [30]arrow_forwardPart I. Complete the following chemical reactions. Do not forget to balance the reaction, the states of matter and answer any questions that are asked. In the next reaction, a gas is formed. (19 points). HCl (aq) + Mg (s) → Gas that was released: Mg (s) + O2 (g) → Cu2S (s) + O2 (g) → Gas that was released:arrow_forward(6.5:Similar to For More Practice 6.7) Density of a gas is 0.8916 g/L at 1.0 atm and 273 °C. Identify the gas. (Hint: Find the molar mass of the gas.) O oxygen (O₂) O chlorine gas (Cl₂) O argon (Ar) O none of thesearrow_forward
- 9.116 Lithium chloride has a solubility of 55 g of LiCl in 100. g of H,O at 25 °C. Determine if each of the following mixtures forms an unsaturated or saturated solution at 25 °C: (9.3) a. adding 10 g of LiCl to 15 g of H;O b. adding 25 g of LİCI to 50. g of H,0 c. adding 75 g of LiCl to 150. g of H,O ne on nearrow_forward(LO 7.1.1, 7.1.2, 7.2.1, 7.2.2) A small home might use about 6.50 moles of methane, CH4, per day in moderately cold weather for heating. How many moles of water will be produced when combusting 6.50 moles of methane? CH4 + CO₂ + 2.17 3.25 4.33 6.5 9.75 13.0 19.5 0₂ → 111- H₂O (unbalanced)arrow_forward5.82 Consider the following two reactions:arrow_forward
- 2. 13.9 g of ammonium nitrate is dissolved in a total volume of 225 mL in a coffee cup calorimeter. If the initial temperature of the water is 27.0 °C, what will the final temperature of the solution be if the heat of solution of ammonium nitrate is 25.7 kJ/mol? Density of the solution is 1.02 g/mL, the specific heat is approximately 4.17 J/g.ºC, and the molar mass of ammonium nitrate is 80.043 g/mol.arrow_forwardHonors Chemistry-4th Hour- Dr. Paul / Gases / Lesson 148 11. Which state of matter is most accurately described by the kinetic molecular theory? O gas aqueous solid O liquid available! (3.0.227)arrow_forwardJania.20 Chapter 3 3.100 When 1.0 9 of gasoline burns, it releases gasoline 0.749/ML SI (3.4.3.6) A) HOw many megajoules arc released srs 1.0 gai ot gasoline burns? Whenarrow_forward
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