We know that
1 calorie = 4.184 Joules
so let us convert the joules to calories first
1 Joule = 1 / 4.184 Cal
150000 = 150000 / 4.184 Cal = 35850.86 Cal
Now in case of food articles
one calorie = 1 Kcal
Therefore on food label it will = 35.851 Cal
<span>N2, penta means 5, so 5 oxygens
so with that being said n205</span>
<span>A sample of C3H8 has 3.20 × 10^24 H atoms.
We will use Avogadro's number for this problem. Avogadro's number states that there are 6.022x 10^23 atoms per mole of a substance. We will use dimensional analysis, notice how the units cancel in the computation below:
</span>3.20 × 10^24 atoms H * (1 mole H/6.022x 10^23 atoms H) * (3 moles C/8 moles H) * (6.022x 10^23 atoms C/1 mole C) = 1.2 x 10^24 atoms C
To get the total mass of the sample in grams, let us note that there are 3 moles of carbon and 8 moles of hydrogen per mole of C3H8, and using the molecular weights of C (12 g/mol) and H (1 g/mol), we get (12*3)+(1*8)= 44 g/mol as the molar mass.
3.20 × 10^24 atoms H * (1 mole H/6.022x 10^23 atoms H) * (1 mole C3H8/8 moles H) * (44 g C3H8 / 1 mole C3H8) = 29.23 g C3H8<span>
</span>
C. 1, the only products that need balancing in the reaction are (AgNO3, Ag)
