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rjkz [21]
3 years ago
13

What is the Ph of a 3.9* 10^-8 M OH- solution

Chemistry
1 answer:
Maksim231197 [3]3 years ago
3 0
Molarity = 3.9 * 10 ^ -8

pH = - log (3.9 * 10 ^ -8)

pH = - (-7.40893539)

pH = 7.409 = 7.4 ... Ans
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What is the difference between polar and non-polar
ExtremeBDS [4]

Answer:

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Explanation:

Polar molecules occur when there is an electronegativity difference between the bonded atoms. Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.

5 0
3 years ago
How are atoms arranged in molecular compounds?
frutty [35]
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For </span>covalent compounds<span>: </span>
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3 years ago
What is the volume of 18.9 g of a liquid that has a density of 0.956 g/ml
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6 0
3 years ago
A patients blood is tested for growth hormone which has a molecular mass of 848.952g/mol. The test results show a normal concent
rusak2 [61]

Answer:

\boxed{4.7\times 10^{-9}}

Explanation:

Data:

MM = 848.952 g/mol  

   c = 4.0 x 10⁻⁶ g/L

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Calculations:

(a) Mass of growth hormone

\text{Mass} = \text{1 L} \times \dfrac{4.0 \times 10^{-6} \text{ g}}{\text{1 L}} = 4.0 \times 10^{-6} \text{ g}

(b) Moles of growth hormone

\text{Moles} = 4.0 \times 10^{-6} \text{ g} \times \dfrac{\text{1 mol}}{\text{848.952 g}} = 4.7\times 10^{-9}\text{ mol}\\\\\text{There are $\boxed{\mathbf{4.7\times 10^{-9}}\textbf{ mol}}$ of growth hormone in 1 L of blood.}

8 0
3 years ago
Describe the formation of an image in a pinhole camera
Alla [95]

Answer:

Explanation:

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8 0
3 years ago
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