6. How many protons, neutrons, and electrons are in ³⁵Cl⁻? 6. How many protons, neutrons, and electrons are in ³⁵Cl⁻? Read Details
1. Which of the following is an electrolyte? 1. Which of the following is an electrolyte? Read Details
9. If a compound’s empirical formula is CH₂O and its molar m… 9. If a compound’s empirical formula is CH₂O and its molar mass is 180 g/mol, what is its molecular formula? Read Details
5. How do chemists use molar ratios from formulas? 5. How do chemists use molar ratios from formulas? Read Details
7. A sample contains 0.250 mol NaCl. How many grams is this? 7. A sample contains 0.250 mol NaCl. How many grams is this? Read Details
8. If 5.0 g H₂ reacts with 32.0 g O₂, which is limiting in:… 8. If 5.0 g H₂ reacts with 32.0 g O₂, which is limiting in: 2H₂ + O₂ → 2H₂O? Read Details
7. How many kJ are absorbed when 50.0 g H₂O is heated from 2… 7. How many kJ are absorbed when 50.0 g H₂O is heated from 20°C to 50°C? (specific heat = 4.18 J/g°C) Read Details
6. How many moles of O₂ are needed to completely react with… 6. How many moles of O₂ are needed to completely react with 4.0 mol CH₄ in: CH₄ + 2O₂ → CO₂ + 2H₂O? Read Details
14. How much heat is absorbed when 25.0 g ice melts at 0°C?… 14. How much heat is absorbed when 25.0 g ice melts at 0°C? ΔHfus = 6.02 kJ/mol Read Details
12. How many grams of NH₃ can be produced from 2.0 mol N₂ an… 12. How many grams of NH₃ can be produced from 2.0 mol N₂ and excess H₂ in: N₂ + 3H₂ → 2NH₃? Read Details
