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3 years ago

What is the ratio of carbon, hydrogen, and oxygen in most carbohydrates?

Chemistry

2 answers:

horrorfan [7]3 years ago

7 0

In carbohydrates the C:H:O is 1:2:1

san4es73 [151]3 years ago

4 0

The ratio is— 1:2:1 (carbon, hydrogen, oxygen)

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A certain liquid has a normal boiling point of and a boiling point elevation constant . A solution is prepared by dissolving som

PSYCHO15rus [73]

This question is incomplete, the complete question is;

A certain liquid X has a normal boiling point of 150.4 °C and a molar boiling point elevation constant kb is 0.60 °Ckgmol⁻¹.

A solution is prepared by dissolving some urea (NH22CO) in 750 g of X. This solution boils at 150.9 °C . Calculate the mass of urea that was dissolved. Round your answer to 3 significant digits.

Answer:

the mass of urea that was dissolved is 37.5 g

Explanation:

Given the data in the question;

normal boiling point of X; Tb⁰ = 150.4 °C

boiling point of solution Tb = 150.9 °C

Change in boiling point Δt = Tb - Tb⁰ = 150.9 °C - 150.4 °C = 0.5 °C

Kb = 0.6 °C.kg.mol⁻¹

V = 750 g

Now, we know that

Δt = Kb × molality

0.5 = 0.6 × molality

molality = 0.5 / 0.6

molality = 0.833

we know that molar mass of urea is 60 g/mol

molality = mass × 1000 / molar mass × volume( g )

we substitute

0.833 = ( mass × 1000 ) / ( 60 × 750 )

0.833 = ( mass × 1000 ) / 45000

0.833 × 45000 = mass × 1000

mass = ( 0.833 × 45000 ) / 1000

mass = 37485 / 1000

mass = 37.485 ≈ 37.5 g { 3 significance figure }

Therefore, the mass of urea that was dissolved is 37.5 g

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2 years ago

What would be the greatest difference in using an open ceramic coffee mug rather than an insulated mug with a lid as a calorimet

bekas [8.4K]

Hmmm, I believe the answer is "Exchange of energy with the surroundings"

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3 years ago

Read 2 more answers

An atom that has lost or gained electrons is known as an ion. Which compound below is made up of ions?

nordsb [41]

<h3>ANSWER:</h3>

<h3>EXPLANATION:</h3>

An ionic compound is made up of a metal and a nonmetal. K is a metal while bromine is a nonmetal. Thus K transfers its one electron to bromine in order to form an ionic compound.

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3 years ago

Read 2 more answers

anuvia, the trade name for sitagliptin, was introduced in 2006 for the treatment of type 2 diabetes. In what type of orbital doe

Aleonysh [2.5K]

Answer: hello your question is poorly written below is the complete question

answer:

For N1 : sp³ orbital

For N2: p orbital

For N3 : p orbital

For N4 : sp² orbital

For N5 : sp² orbital

Explanation:

Determining the type of orbital in which the lone pair on each N atom will reside.

From the configuration attached below we can determine the type of orbital and they are ;

For N1 : sp³ orbital

For N2: p orbital

For N3 : p orbital

For N4 : sp² orbital

For N5 : sp² orbital

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2 years ago

How many atoms are there in total in a molecule of sulfur trioxide, SO3?

viva [34]

Answer:

Explanation:

There are 6.87 x 1023 atoms in 1.14 mol SO3, or sulfur trioxide (mol is the abbreviation for mole).

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3 years ago