Answer:
3 × 10⁴ kJ
Explanation:
Step 1: Write the balanced thermochemical equation
C₃H₈(g) + 5 O₂(g) ⟶ 3 CO₂(g) + 4 H₂O(g) ΔH = -2220 kJ
Step 2: Calculate the moles corresponding to 865.9 g of H₂O
The molar mass of H₂O is 18.02 g/mol.
865.9 g × 1 mol/18.02 g = 48.05 mol
Step 3: Calculate the heat produced when 48.05 moles of H₂O are produced
According to the thermochemical equation, 2220 kJ of heat are evolved when 4 moles of H₂O are produced.
48.05 mol × 2220 kJ/4 mol = 2.667 × 10⁴ kJ ≈ 3 × 10⁴ kJ
Answer:
![2~CH_3OH+3~O_2\rightarrow2~CO_2+4~H_2O\\](https://tex.z-dn.net/?f=2~CH_3OH%2B3~O_2%5Crightarrow2~CO_2%2B4~H_2O%5C%5C)
The coefficients would be 2, 3, 2, and 4.
Explanation:
If we want to check this we would multiply the coefficient by each element. What we want is to have the same number of atoms on each side.
<em><u>Reactant side:</u></em>
- # of carbon atoms: 2
- # of hydrogen atoms: 8
- # of oxygen atoms: 8
<em><u>Product side:</u></em>
- # of carbon atoms: 2
- # of hydrogen atoms: 8
- # of oxygen atoms: 8
And that's it!
Answer:
c. 1.4 x 10²³ oxygen atoms
Explanation:
The number of oxygen atoms in one molecule of CH₃COOH is 2.
Avogadro's constant relates the number of molecules in one mole:
6.022 × 10²³ mol⁻¹
Thus, the number of oxygen atoms in one molecule of acetic acid can be converted to the number of oxygen atoms in one mole of acetic acid:
(2 oxygen atoms / molecule)(6.022 × 10²³ molecule / mol) = 1.204 x 10²⁴ atoms per mole
Finally, the number of oxygen atoms in 0.12 moles of acetic acid are calculated:
(1.204 x 10²⁴ atoms / mol)(0.12 mol) = 1.4 x 10²³ atoms/mol
Answer:
Chemical fertilizers are compounds containing high concentration of nutrients required for plant growth. Apart from the three main constituent elements, carbon, oxygen and hydrogen, plants require substantial quantity of nutrients. These nutrients are classified as primary nutrients, secondary nutrients, and micronutrients. The elements responsible for providing these nutrients are listed in Table 7–1. Generally fertilizer industry is engaged in the production of primary plant nutrients suitable for application in the soil. In nitrogenous fertilizers, nitrogen is present as ammoniacal nitrogen such as ammonium sulphate, ammonium chloride; nitrate nitrogen such as calcium ammonium nitrate in which both ammoniacal and nitrate nitrogen are present, and amide nitrogen such as urea.