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1 year ago

List the objects from the smallest to the largest mass.

Chemistry

1 answer:

ddd [48]1 year ago

3 0

i need help ls i thank its book 500 grams

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Glucose, C 6 H 12 O 6 , is used as an energy source by the human body. The overall reaction in the body is described by the equa

MA_775_DIABLO [31]

Answer:

$m_{O_2}=61.87gO_2$

$m_{CO_2}=85.07gCO_2$

Explanation:

Hello,

Considering the given reaction's stoichiometry, grams of oxygen result:

$m_{O_2}=58.0gC_6H_{12}O_6*\frac{1molC_6H_{12}O_6}{180gC_6H_{12}O_6}*\frac{6molO_2}{1molC_6H_{12}O_6}*\frac{32gO_2}{1molO_2}\\m_{O_2}=61.87gO_2$

Moreover, the mass of produced carbon dioxide turns out:

$m_{CO_2}=58.0gC_6H_{12}O_6*\frac{1molC_6H_{12}O_6}{180gC_6H_{12}O_6}*\frac{6molCO_2}{1molC_6H_{12}O_6}*\frac{44gCO_2}{1molCO_2}\\m_{O_2}=85.07gCO_2$

Best regards.

6 0

2 years ago

What is the pH of a 0.28 M solution of ascorbic acid

Nady [450]

Hey there!

Values Ka1 and Ka2 :

Ka1 => 8.0*10⁻⁵

Ka2 => 1.6*10⁻¹²

H2A + H2O -------> H3O⁺ + HA⁻

Ka2 is very less so I am not considering that dissociation.

Now Ka = 8.0*10⁻⁵ = [H3O⁺] [HA⁻] / [H2A]

lets concentration of H3O⁺ = X then above equation will be

8.0*10−5 = [x] [x] / [0.28 -x

8.0*10−5 = x² / [0.28 -x ]

x² + 8.0*10⁻⁵x - 2.24 * 10⁻⁵

solve the quardratic equation

X =0.004693 M

pH = -log[H⁺]

pH = - log [ 0.004693 ]

pH = 2.3285

Hope that helps!

3 0

2 years ago

Which of these is not a mixture

NikAS [45]

A.) baking soda is the answer

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2 years ago

A combination of salt and sugar grains is best classified as a mixture because...

Nata [24]

Answer:

Explanation:

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2 years ago

State three properties that make copper suitable for use in plumbing.

marusya05 [52]

- low conductivity

- generally non-toxic

- ductile

- doesn’t corrode as fast as other metals

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2 years ago