Answer:
There are approximately 8.183 × 10²³ units of PbO₂ in 325 grams of PbO₂
Explanation:
The given mass of PbO₂ = 325 grams
The molar mass of PbO₂ = 239.2 g/mol
The number of moles of PbO₂ in 325 grams of PbO₂ is given by the formula for the number of moles of a chemical compound in a given sample of the compound as follows;
For the given PbO₂ compound, in the question, we have;
The number of units of PbO₂ in one mole is given by the Avogadro's number as follows;
The number of units of PbO₂ per mole = 6.023 × 10²³ units
The number of units of PbO₂, in 1.36 mole of PbO₂ is therefore;
= 1.36 × 6.023 × 10²³ units ≈ 8.183 × 10²³ units of PbO₂
The number of units of PbO₂, in 1.36 mole of PbO₂ ≈ 8.183 × 10²³ units.
Answer: 125
Explanation: volume is l x w x h and if its a cube then length, width and the height will be the same so its just 5 x 5 x 5
Answer:
OH−(aq), and H+(aq)
Explanation:
Redox reactions may occur in acidic or basic environments. Usually, if a reaction occurs in an acidic environment, hydrogen ions are shown as being part of the reaction system. For instance, in the reduction of the permanganate ion;
MnO4^-(aq) + 8H^+(aq) +5e-------> Mn^2+(aq) + 4H2O(l)
The appearance of hydrogen ion in the reaction equation implies that the process takes place under acidic reaction conditions.
For reactions that take place under basic conditions, the hydroxide ion is part of the reaction equation.
Hence hydrogen ion and hydroxide ion are included in redox reaction half equations depending on the conditions of the reaction whether acidic or basic.
Answer:
$21,124,000
hey I researched and its true, and the info was updated on january 12, 2020
Answer:
Photosynthesis occurs in two stages. During the first stage, the energy from sunlight is absorbed by the chloroplast. Water is used, and oxygen is produced during this part of the process.
Explanation: