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2 years ago

What volume of nitrogen gas is equal too 3.42x10^22 molecules of this substance

Chemistry

1 answer:

Bas_tet [7]2 years ago

8 0

if i am correct the volume of nitrogen gas has to equal to molecules density, making the substance 1.27 liters :)

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1. An atom of an elephant has atomic mass of 39 and has number of neutrons as 20 calculate protons number.

r-ruslan [8.4K]

Answer:

See Explanation

Explanation:

1) Let us recall that;

Mass number = number of protons + number of neutrons

Where;

Number of protons = ?

Number of neutrons =20

Mass number =39

Number of protons = mass number - number of neutrons

Mass of protons =39 - 20= 19 protons

2) Atomic number = 13

Number of neutrons =14

Then the mass number =13 +14 =27

The symbol of the element is 27X13

The number of protons= the number of electrons =13

The atomic number is the same as the proton number =13

5 0

3 years ago

1. Which of the following elements has the smallest ionization energy

Serhud [2]

Answer:

chlorine

Explanation:

hope this helps

8 0

3 years ago

a blank in the speed of the molecules allows the attractions between atoms and a little closer together

anygoal [31]

Idk it’s there’s a picture(it won’t load or no picture) but when molecules move slow and are kidna packed together it is a solid

6 0

3 years ago

Identify the following redox reactions by type. Check all that apply. (a) Fe + H2SO4 → FeSO4 + H2 combination decomposition disp

EastWind [94]

Answer :

(a) displacement reaction

(b) combination reaction

(c) disproportionation reaction

(d) displacement reaction

Explanation :

(a) The given balanced chemical reaction is,

$Fe+H_2SO_4\rightarrow FeSO_4+H_2$

This reaction is a single replacement reaction or displacement in which the the more reactive element (Fe) replace the less reactive element (H).

(b) The given balanced chemical reaction is,

$S+3F_2\rightarrow SF_6$

This reaction is a combination reaction in which the two reactants molecule combine to form a large molecule or single product.

(c) The given balanced chemical reaction is,

$2CuCl_2\rightarrow Cu+CuCl_2$

This reaction is a disproportionation reaction in which the chemical species gets oxidized and reduced simultaneously. It is also considered as a redox reaction.

(d) The given balanced chemical reaction is,

$2Ag+PtCl_2\rightarrow 2AgCl+Pt$

This reaction is a single replacement reaction or displacement in which the the more reactive element (Ag) replace the less reactive element (Pt).

7 0

3 years ago

(+)-Carvone and (-)-carvone differ in the orientations of the substituents around which of the following carbon atoms?

myrzilka [38]

Answer:

The correct option is: B. Carbon 5 only

Explanation:

Carvone is a naturally-occurring monoterpenoid consisting of a six-membered cyclic ring. The carbon-5 of this cyclic ring of Carvone is chiral, due to which Carvone exhibits enantiomerism.

The two enantiomeric forms of Carvone are: R-(–)-carvone, or L-carvone, and S-(+)-carvone, or D-carvone.

These two enantiomeric forms differ in the orientation of the substituents on the chiral carbon-5.

Therefore, the correct option is B. Carbon 5 only.

5 0

3 years ago