Answer:
The mass of 8.250 moles of Cu2O is 1180.5g
Explanation:
HOW TO CALCULATE MASS OF A SUBSTANCE:
- The mass of a substance can be calculated by multiplying the number of moles in the substance by its molar mass as follows:
Mass (g) = no. of moles (mol) × molar mass (g/mol)
- Molar mass of copper (I) oxide (Cu2O) = 63.5(2) + 16 = 143.09 g/mol
Mass of Cu2O = 8.250 mol × 143.09 g/mol
Mass of Cu2O = 1180.5 g
Therefore, the mass of 8.250 moles of Cu2O is 1180.5 g.
65ml x 1.3 molar = 0.0845 moles solution #1
0.0845 moles / .208 L = 0.4 M
0.4M × 104 ml / 213 ml = .20 M after sig figs
Answer:
C₁₅H₁₅Co₃
Explanation:
Compound = Carbon+ Hydrogen + Cobalt
Mass of carbon = 1.453 g
Mass of Hydrogen = 0.122 g
Mass of Cobalt = 3 - 1.453 - 0.122 = 1.425 g
Dividing all through b their molar masses
Carbon = 1.453 / 12 = 0.1211
Hydrogen = 0.122 / 1 = 0.122
Cobalt = 1.425 / 58.9 = 0.02419
Divide all through by the smallest number (0.02419)
Carbon = 0.1211 / 0.02419 = 5
Hydrogen = 0.122 / 0.02419 = 5
Cobalt = 0.02419 / 0.02419 = 1
The empirical formular = C5H5Co
(C5H5Co)n = 372
[(12 * 5 ) + (5 * 1 ) + 58.9]n = 372
n = 372 / 123.9 = 3
Chemical formular;
C₁₅H₁₅Co₃
Oxygen gas and ozone are both made up of oxygen atoms but their properties differ.
<h3>How does oxygen gas differ from ozone?</h3>
- Oxygen is generally odorless when perceived, unlike ozone which has a pungent odor.
- Even though both are gases at room temperature, oxygen liquefies at a much higher temperature (-112 degrees Celsius) than ozone (-183 degrees Celsius).
- Ozone appears bluish in liquid form while oxygen is colorless in nature.
- In terms of reactivity, ozone is more reactive than oxygen.
More on ozone can be found here: brainly.com/question/14330630
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1. Which of the following rules determines the charge on a monatomic Ion formed from a nonmetal?C. 8 - group number
2. Which of the following statements is true?
A. Metals lose electrons to become cations.