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2 years ago

A molecule of glucose is comprised of 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen.

Chemistry

1 answer:

Svetradugi [14.3K]2 years ago

3 0

Answer:

C6H12O6 the third choice

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Calculate the mass of iron(III) oxide that contains a million iron atoms. Be sure your answer has a unit symbol if necessary, an

KiRa [710]

Answer: The mass of iron (II) oxide that contains a million iron atoms is $2.6\times 10^{-17}g$

Explanation:

We are given:

Number of iron atoms = A million = $1.0\times 10^6$

The chemical formula of the given compound is $Fe_2O_3$

It is formed by the combination of 2 iron atoms and 3 oxygen atoms.

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of particles

1 mole of iron (II) oxide will contain = $(2\times 6.022\times 10^{23})=1.2044\times 10^{24}$ number of iron atoms

We know that:

Molar mass of iron (II) oxide = 159.7 g/mol

Applying unitary method:

For $1.2044\times 10^{24}$ number of iron atoms, the mass of iron (II) oxide is 159.7 g

So, for $1.0\times 10^6$ number of iron atoms, the mass of iron (II) oxide will be $\frac{159.7}{1.2044\times 10^{24}}\times 1.0\times 10^6=2.6\times 10^{-17}g$

Hence, the mass of iron (II) oxide that contains a million iron atoms is $2.6\times 10^{-17}g$

8 0

3 years ago

A group of tissues that work together to perform a specific function is called

Phantasy [73]

Answer:

B. Organ.

Explanation:

College Biology Major here.

3 0

2 years ago

A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into small particles by ha

shtirl [24]

Answer:

The strength of these force of attraction is lesser in chalk hence it could be easily broken into small pieces by hammering. But the strength of inter molecular force of attraction is very strong in iron therefore it is not possible to break them into pieces by hammering.

Explanation:

hope this helps :)

7 0

2 years ago

How many grams of sodium chloride are required to prepare 500.0 ml of a 0.100 m solution?

scoray [572]

Answer:

2.92 g

Explanation:

1) Data:

a) V = 500.0 ml = 0.500 liter

b) M = 0.100

c) mass = ?

2) Formulae:

a) Molarity: M = n / V

b) Number of moles: n = mass in grams / molar mass

3) Solution

a) M = n / V ⇒ n = M × V = 0.1000 M × 0.500 liter = 0.0500 mol

b) molar mass NaCl = 58.443 g/mol

c) mass = n × molar mass = 0.0500 mol × 58.443 g/mol = 2.92 g

Answer: 2.92 g

4 0

2 years ago

The Ring of Fire is a string of volcanic sites in the Pacific Ocean that stretches between the Amencas, Asia, and Australia what

Bond [772]

The movement of mantle rock through the cracks between tectonic plates.

6 0

2 years ago