Explanation:
While both developed and developing countries have contributed to global environmental problems, developed countries with 85% percent of the gross world product and 23% of its population account for the largest part of mineral and fossil-fuel consumption, resulting in significant environmental impacts
Answer:
4.3 × 10²¹ atoms
Explanation:
Step 1: Calculate the moles corresponding to 0.24 g of CaCO₃
The molar mass of CaCO₃ is 100.09 g/mol.
0.24 g × (1 mol/100.09 g) = 2.4 × 10⁻³ mol
Step 2: Calculate the moles of oxygen in 2.4 × 10⁻³ moles of CaCO₃
The molar ratio of CaCO₃ to O is 1:3. The moles of O are 3/1 × 2.4 × 10⁻³ mol = 7.2 × 10⁻³ mol
Step 3: Calculate the number of O atoms in 7.2 × 10⁻³ moles of O
We will use Avogadro's number: there are 6.02 × 10²³ atoms of O in 1 mole of atoms of O.
7.2 × 10⁻³ mol × (6.02 × 10²³ atoms/1 mol) = 4.3 × 10²¹ atoms
Answer:
You can view more details on each measurement unit: molecular weight of NaCl or grams This compound is also known as Sodium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles NaCl, or 58.44277 grams.
When 2C2H6 (g) + 7 O2 (g) ⇒ 4CO2 (g) + 6H2O (L) is the balanced equation for this reaction:
So from the equation, 2 mol of C2H6 gives → 4 mol of CO2
So the molar ratio between C2H6 & CO2 is
2 mol C2H6:4 mol CO2 we can make it:
1 mol C2H6: 2 mol Co2
So when we have 5.3 mol of C2H6 how many moles of CO2 then
the moles of CO2 = 5.3 * 2 mol (CO2) / 1 mol (C2H6)
= 10.6 mol
