All categories

4 years ago

How many total atoms are in 0.260 g of P2O5?

Chemistry

1 answer:

wel4 years ago

4 0

Answer:

0.006 ×10²³ atoms

Explanation:

Given data:

Mass of P₂O₅ = 0.260 g

Number of atoms = ?

Solution:

To solve this problem we will use the Avogadro numbers.

The number 6.022×10²³ is called Avogadro number and it is the number of atoms, ions or molecules in one mole of substance. According to this,

1.008 g of hydrogen = 1 mole = 6.022×10²³ atoms.

18 g water = 1 mole = 6.022×10²³ molecules

Thus,

283.88 g of P₂O₅ = 1 mole = 6.022×10²³ atoms.

For 0.260 g:

0.260 g/ 283.88 g/mol =0.00092 mol

0.00092 × 6.022×10²³ atoms = 0.006 ×10²³ atoms

You might be interested in

A reaction of importance in the formation of smog is that between ozone and nitrogen monoxide described by O3(g)+NO(g)⟶O2(g)+NO2

julsineya [31]

Answer:

Initial rate of reaction is $2.07\times 10^{-3}M.s^{-1}$ .

Explanation:

It is a second order reaction.

Initial rate of reaction = $k[O_{3}]_{0}[NO]_{0}$ , where k is rate constant, $[O_{3}]_{0}$ is the initial concentration of $O_{3}$ and $[NO]_{0}$ is the initial concentration of NO.

Here, k = $4.09\times 10^{6}M^{-1}.s^{-1}$ , $[O_{3}]_{0}=5.84\times 10^{-6}M$ and $[NO]_{0}=8.65\times 10^{-5}M$

So, initial rate of reaction = $(4.09\times 10^{6}M^{-1}.s^{-1})\times (5.84\times 10^{-6}M)\times (8.65\times 10^{-5}M)$

= $2.07\times 10^{-3}M.s^{-1}$

So, initial rate of reaction is $2.07\times 10^{-3}M.s^{-1}$

8 0

3 years ago

What type of reaction is Ni + MgSo4

kumpel [21]

Chemical- it produces ammonia.

4 0

3 years ago

Atoms are so small that approximately _______ of them can fit at the end of a needle?

rewona [7]

Answer:

5 million million atoms can fit at the end of a needle

4 0

3 years ago

Read 2 more answers

Choose the more metallic element from each pair.

Paraphin [41]

Answer:

Explanation:

CI or O

Carla Vista Company has the following information available for September 2020.

Unit selling price of video game consoles $410

Unit variable costs $328

Total fixed costs $36,900

Units sold 600

Compute the unit contribution margin.

Unit contribution margin enter the unit contribution margin

Prepare a CVP income statement that shows both total and per unit amounts.

Compute Carla Vistaâ€™ break-even point in units.

Break-even point in units enter Break-even point in units units

Prepare a CVP income statement for the break-even point that shows both total and per unit amounts.

5 0

3 years ago

What happens when Aluminium metal is added to copper sulphate solution

AlexFokin [52]

Answer:

The colour of the solution will change from blue to transparent and copper will be observed as a layer on the Aluminium piece.

Explanation:

The colour of the solution will change from blue to transparent and copper will be observed as a layer on the Aluminium piece.

8 0

3 years ago