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Acetylene, C2H2, is a gas used in welding. The heat evolved for the combustion of acetylene is –33.79 kJ. If the heat capacity of the calorimeter is 5.54 kJ/0C, what is the temperature increase of the bomb calorimeter?
If the same amount of energy in the form of heat is added to 5.00 g samples of metals Ag, Al, Cu, which metal will undergo the largest temperature change? The heat capacities of the metals in J/g 0 C are: 0.235, 0.897, 0.385 respectively.
When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 25.18 0C to 47.53 0C. What is the enthalpy change in kJ per mole of KOH dissolved in the water? The specific heat capacity of water is 4.184 J/g0C
a tank contains 325 moles of compressed helium gas. how many helium atoms are in the tank?
The illustration above shows the attraction of two helium atom. Which is commonly known to have no charge. was it possible for 2 non-charged molecules to have an attraction?
Assuming that the octet rule is obeyed, write out the electron configuration for the ion formed by the
element magnesium, Mg.
If 10.0 moles of O₂ are reacted with excess NO in the reaction below, and only 6.4 mol of NO₂ were collected, then what is the percent yield for the reaction?
2 NO (g) + O₂ (g) → 2 NO₂ (g)
When 3.50 × 1022 molecules of ammonia react with 6.50 × 1022 molecules of oxygen according to the chemical equation shown below, how many grams of nitrogen gas are produced?
4 NH3(g) + 3 O2(g)→ 2 N2(g) + 6 H2O(g)
2S+3O2→2SO3
How many O2 molecules are needed to react with 2.15 g of S?
What is the theoretical yield of SO3 produced by 2.15 g of S?
If I have a 50 liter container that holds 45 moles of gas at a temperature of 472K, what is the pressure
inside the container? Solving for "p"
