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vesna_86 [32]
3 years ago
8

Given that P-31 is the only natural isotope of phosphorus, what is the mass of one P atom and the mass of Avogadro's number of P

atoms, respectively?
Chemistry
2 answers:
Citrus2011 [14]3 years ago
5 0

Answer:

Mass of Avogadro's number of P atoms = 31 g

Mass of 1 P atom = 5.15*10⁻²³ g

Explanation:

The two rules to consider are:

1) Mass of 1 mole of an element is equal to its molar mass in grams

2) 1 mole of any element contains Avogadro's number of atoms

i.e. 1 mole = 6.023*10^23 atoms(or molecules or particles)

For P-31

1 mole of P-31 = 31 grams

i.e. Mass of Avogadro's number of P atoms = 31 g

6.023*10^23 P atoms = 31 g

Therefore, mass of 1 P atom is:

= \frac{1\ P\ atom *31\ g}{6.023*10^{23}\ atoms}=5.15*10^{-23}\ g

Sonja [21]3 years ago
3 0
The mass of on P atom would be 31 divided by 6.02 * 10^23
The mass of Avogadro's number of P atoms would be 31, since the atomic weight of and element is the mass of exactly one mole of that element, and Avogadro's number is the number of atoms in one mole.
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3 years ago
Hydrogen is a special ,because it can act like two groups,____and_____
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Answer:

First and seventeenth group.

Explanation:

Hydrogen is a special case as it has only one electron in its outermost orbital.

The hydrogen can lose or can accept electron easily.

Thus it can form positive ion similar to alkali metals and negative ion similar to halogens.

Thus it can fall into two groups

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5 0
3 years ago
The diameter of a hydrogen atom is approximately 1.06 ✕ 10−10 m, as defined by the diameter of the spherical electron cloud arou
mylen [45]

Answer:

a) 10.0 mm

b) 8.7 x 10¹³ times

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Atom diameter = 1.06 x 10⁻¹⁰ m  ________________ 100%

Nucleus diameter = 2.40 x 10⁻¹⁵ m ______________   x

x = 2.26 x 10⁻³ %

The nucleus diameter is equivalent to 2.26 x 10⁻³ % of the total atom size.

a) The Empire State Building model:

1 ft = 304.8 mm

1454 ft = 443179.2 mm

443179.2 mm______ 100%

        y           ______   2.26 x 10⁻³ %

              y = 10.0 mm

In this model,  the diameter of the nucleus would be 10.0 mm.

b) Sphere volume: V =(4 · π · r³ )/3

V atom = (4 . π .( 0.53x10⁻¹⁰)³ )/3

V atom = 6.2 x 10⁻³¹ m³

V nucleus = (4 . π .( 1.2x10⁻¹⁵)³ )/3

V nucleus = 7.2 x 10⁻⁴⁵ m³

V atom / V nucleus = 6.2 x 10⁻³¹ m³ / 7.2 x 10⁻⁴⁵ m³

V atom / V nucleus = 8.7 x 10¹³

The atom is  times 8.7 x 10¹³ larger in volume than its nucleus.        

6 0
3 years ago
Mixtures of hydrogen and oxygen in varying concentrations can be sparked to produce water. Define mixture and compound, and then
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Explanation:

Mixture is the physical Combination Of two or Substance

Example

a mixture of sugar and water.

Compound is the chemical combination of two or more metals.

Example.

a mixture of hydrogen and water.

A mixture of hydrogen and oxygen forms water or H2O

whereas The dihydrogen monoxide parody involves calling water by an unfamiliar chemical name, most often "dihydrogen monoxide" (DHMO), and listing some of water's properties in a particularly alarming manner, such as accelerating corrosion (rust) and causing suffocation (drowning). The parody often calls for dihydrogen monoxide to be banned, regulated, or labeled as dangerous. It plays into chemophobia and demonstrates how a lack of scientific literacy and an exaggerated analysis can lead to misplaced fears. The parody has been used with other chemical names such as hydrogen hydroxide, dihydrogen oxide, hydroxic acid, hydric acid and oxidane.

4 0
2 years ago
write chemical equations of photosynthesis and cellular respiration and show if carbon is oxidized or reduced
irina [24]

Answer:

Explanation:

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This is an example of oxidation of carbon .

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6CO₂  ( Carbon dioxide ) + 6H₂O ( Water ) --------------> C₆H₁₂O₆( Glucose ) + 6 O₂  ( Oxygen ).

This is an example of reduction of carbon .

6 0
3 years ago
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