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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)
Write the MBE, PBE and CBE for the following:
a. 0.15M H2CrO4
b. 0.35M KClO4
c. 0.50M NaHSO4
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"
How many moles of H2O will be produced from 2.9 grams of HCl?
#340153 on Dec 2023