Answer:
"This conversions relies on the fact that a mole of gas at STP has a volume of 22.4 L. It is important to note, however, that if the conditions of the gas are different this conversion will NOT work. Under those conditions you must use the ideal gas law to convert between moles and liters."
<u>Explanation:</u>
<u>Similarity between the two:</u>
Molecular formula and structural formula gives the exact number of atoms of different chemical elements that are present in a compound.
<u>Difference between the two:</u>
Structural formula gives us the relative positions of the atoms that are present in a compound whereas molecular formula does not give us the relative positions of the atoms. But it gives us the ratio of atoms in a given compound.
The correct answer is A. Cesium has the lowest electron affinity among the three while Chlorine has the highest.
Answer:
Mass = 7.2 g
Explanation:
Given data:
Mass of ZnO = 36.9 g
Mass of oxygen needed = ?
Solution:
Chemical equation:
2Zn + O₂ → 2ZnO
Number of moles of ZnO:
Number of moles = Mass/ molar mass
Number of moles = 36.9 g/81.38 g/mol
Number of moles = 0.45 mol
Now we will compare the moles of ZnO with oxygen:
ZnO : O₂
2 : 1
0.45 : 1/2 × 0.45 = 0.225
Mass of oxygen:
Mass = number of moles × molar mass
Mass = 0.225 mol × 32 g/mol
Mass = 7.2 g
Answer:
See explanation
Explanation:
The word equation for the formation of copper acetate is as follows;
copper + vinegar → copper II oxide → copper acetate
Copper and vinegar are reactants while the copper acetate is the product
Note that vinegar is a weak solution of acetic acid. Pure copper does not react with acetic acid (copper is less than hydrogen in the electrochemical series); however, a reactive oxide layer is formed upon exposure to air. This layer interacts with non-oxidizing acids to give green copper(II) compounds (DeMeo, 1997; Tétreault et al., 2003), a typical example of such compounds is the copper(II) acetate formed in the word equation above.
Acid rain forms new substances because it is capable of interacting chemically with surfaces. When substances are exposed to acid rain, they dissolve in water if they are soluble in acids to form new substances.