The covalent bonds that form between atoms of different
electronegativities called polar bonds. Just like in water. The cause of
polarity in water molecules is because of the high electronegativity difference
between oxygen and hydrogen.
There are 1.65 × 10^(-7) g S in 3.01 × 10^15 atoms S.
<em>Step 1</em>. Use Avogadro’s number to convert <em>atoms of S to moles of S</em>
Moles of S = 3.01 × 10^15 atoms S × (1 mol S/6.022 × 10^23 atoms S)
= 5.148 × 10^(-9) mol S
<em>Step 2</em>. Use the molar mass of S to convert <em>moles of S to grams of S
</em>
Mass of S = 5.148 × 10^(-9) mol S × (32.06 g S/1 mol S) = 1.65 × 10^(-7) g S
Answer:
3
Explanation:
From the question:
Barium phosphate reacts with sulfuric acid to form barium sulfate and phosphoric acid.
The equation for the above reaction can be written as follow:
Ba3(PO4)2 + H2SO4 —> BaSO4 + H3PO4
Now, let us balance the equation in order to obtain the coefficient of H2SO4. This is illustrated below below:
Ba3(PO4)2 + H2SO4 —> BaSO4 + H3PO4
There are 3 atoms of Ba on the left side of the equation and 1 atom on the right side. It can be balance by putting 3 in front of BaSO4 as shown below:
Ba3(PO4)2 + H2SO4 —> 3BaSO4 + H3PO4
There are 3 atoms of SO4 on the right side and 1 atom on the left side. It can be balance by putting 3 in front of H2SO4 as shown below:
Ba3(PO4)2 + 3H2SO4 —> 3BaSO4 + H3PO4
Now, we can see that there 6 atoms of H on the left side and 3 atoms on the right side. It can be balance by putting 2 in front of H3PO4 as shown below:
Ba3(PO4)2 + 3H2SO4 —> 3BaSO4 + 2H3PO4
Now the equation is balanced.
The coefficient of sulphuric acid (H2SO4) is 3