The number of moles is simply calculated by taking the ratio of mass over the molar mass. The molar mass of silver nitrate AgNO3 is 169.87 g/mol. Therefore:
number of moles AgNO3 = 100 g / (169.87 g/mol)
number of moles AgNO3 = 0.59 moles
Nobody specifically made the periodic table but it was first thought of by Dmitri Mendeleev in 1869.
<h3>
Answer:</h3>
D. CH₃O₆
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Explanation:</h3>
- We are given the ratio of carbon, hydrogen and oxygen in a compound as 14: 42 : 84
We are supposed to determine the empirical formula of the compound;
- We need to know what is an empirical formula;
- An empirical formula of a compound is a formula that shows the simplest whole number ratio of elements in a compound.
In this case;
The ratio of C : H : O is 14 : 42 : 84
- Note, this is not the simplest ratio.
But we can simplify further to get the simplest whole number ratio;
- Therefore, 14 : 42 : 84 is equal to 1 : 3 : 6
- Thus, the simplest whole number ratio of C : H : O in the compound is 1 : 3 : 6
- Therefore, the empirical formula of the compound is CH₃O₆
It's a homogeneous mixture because when it is mixed together you can no longer tell which parts are chocolate or which parts are milk
If x is H+ then <span>x/0.15 = 0.03 and x = 0.0045 M </span><span>and
</span>
<span>Ka = x^2/(0.15 - x) = 0.0045^2/(0.15 - 0.0045) = 1.39 x 10^-4</span>
