Calculate the formula/molecular mass of following

Chemistry

1 answer:

ddd [48]3 years ago

8 0

Answer:

Refer to the period table. Use the atomic mass for calculation. Multiply the atomic mass with the number of atoms. For example, Al2(SO4)3. (27 × 2) + (32 x 3) + (16 x 12) = molecular mass

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What is the pH of a 2.6 x 10-9 M H+ solution? pH ?]

bija089 [108]

Answer: The value of the pH is 8.58

Explanation:

The pH is defined negative logarithm of the $H^+$ ions concentration in a given solution.

$[H^+]=2.6\times 10^{-9} M$

$pH=-\log{H^+}$

$pH=-\log[2.6\times 10^{-9}]=5.58$

The value of the pH is 8.58

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3 years ago

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Sunny_sXe [5.5K]

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nikdorinn [45]

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3 years ago

Using 25 micromoles, pmoles, of CO2 consumed how many grams of glucose (MW = 180 g/mole) were produced?

Sladkaya [172]

Grams of glucose = 0.7488 mg=748.8 μg

<h3>Further explanation</h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

6CO₂+6H₂O⇒C₆H₁₂O₆+6O₂

25 micromoles, μmoles, of CO₂ :

moles CO₂ : moles glucose - C₆H₁₂O₆ = 6 : 1, so :

$\tt moles~glucose=\dfrac{1}{6}\times 25\mu~moles=4.16\mu~moles=4.16\times 10^{-6}~moles$