3 years ago

Tell whether the statement is TRUE or FALSE. This symbol means every element is in both sets (A ⊆ B).

1 answer:

4 0

True
This statement is read as "A is a subset of B" which means that all elements contained in set A are a part of set B.

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lisabon 2012 [21]

Explanation:

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k: a constant

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2 years ago

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WITCHER [35]

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2 years ago

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ss7ja [257]

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2 years ago

You have a solution that is 0.02M formate (HCOO-) and 0.03M formic acid (HCOOH), which has a Ka of 1.8x10-4. What is the pH of t

lisov135 [29]

Answer:

3.6

Explanation:

Step 1: Given data

Concentration of formic acid: 0.03 M

Concentration of formate ion: 0.02 M

Acid dissociation constant (Ka): 1.8 × 10⁻⁴

Step 2: Calculate the pH

We have a buffer system formed by a weak acid (HCOOH) and its conjugate base (HCOO⁻). We can calculate the pH using the Henderson-Hasselbach equation.

$pH = pKa +log\frac{[base]}{[acid]} = -log 1.8 \times 10^{-4} + log \frac{0.02}{0.03} = 3.6$

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2 years ago