Answer:
0.642 g
Explanation:
La ecuación balanceada es:
- 2Mg + 2CuSO₄ + H₂O → 2MgSO₄ + Cu₂O + H₂
Primero <u>convertimos 1.89 g de Cu₂O en moles</u>, usando su <em>masa molar</em>:
- 1.89 g ÷ 143.09 g/mol = 0.0132 mol Cu₂O
Después <u>convertimos moles de Cu₂O en moles de Mg</u>, usando los <em>coeficientes estequiométricos</em>:
- 0.0132 mol Cu₂O * = 0.0264 mol Mg
Finalmente <u>convertimos moles de Mg en gramos</u>, usando la <em>masa molar de Mg</em>:
- 0.0264 mol Mg * 24.305 g/mol = 0.642 g
The modern periodic law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers.
Modern periodic table is based on atomic number. Thus, the properties of elements are related to their atomic number or electronic configuration. Elements are arranged according to increasing order of atomic number. Elements with similar properties occur at regular intervals in the periodic table. The cause of periodicity in properties is due to recurrence of similar outer electronic configuration at certain regular intervals.
Answer:
Carbon Monoxide / Carbon Dioxide / Sulfur and Nitrogen Dioxide
Explanation:
the correct answer would be the sun