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mina [271]
3 years ago
6

Which particles contribute to the atomic number and why ??

Chemistry
1 answer:
Ainat [17]3 years ago
4 0

Answer:

the number of protons in the nucleus that are found in an atom is what determines an element's atomic number.why you may ask and thats because Protons contribute to the mass of an atom.(along with neutrons but they dont have a charge)but protons provide a positive charge to the nucleus.  

Explanation:

because the atom is electrically neutral, the number of electrons must equal the number of protons.

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A vessel initially containing 1 kmol of CO and 4.76 kmol of dry air forms an equilibrium mixture of CO2, CO, O2, and N2 at 3000
sertanlavr [38]

Answer:

Equilibrium composition for, no2 =.7365

The equilibrium composition for,  nN2=3.76

Explanation:

5 0
3 years ago
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. The chan
Oksanka [162]

Answer:

1.21 × 10⁻³⁰ m

Explanation:

1 mol of photons causing the change in the conformation of 11-retinal has an energy of 164 kJ. We can find out the wavelength (λ) associated with this energy (E) using the Planck-Einstein equation.

E = h . c . λ⁻¹

where,

h is the Planck's constant

c is the speed of light

λ = h . c . E⁻¹ = (6.63 × 10⁻³⁴ J × s) × (3.00 × 10⁸ m/s) × (164 × 10³ J)⁻¹ = 1.21 × 10⁻³⁰ m

3 0
3 years ago
15. Triglycerides, waxes, and steroids are all ___ lipids because they contain only carbon, hydrogen, and oxygen
Jlenok [28]
The answer to this question is C
3 0
3 years ago
Read 2 more answers
11. Calculate the number of atoms in 2.00g of platinum.
Serggg [28]

Answer:

Explanation:

All you need to know is the atomic mass of platinum, and Avogadro's number.

2.00g Pt divided by atomic mass gives you the moles of platinum, and multiplying by avogadro's number (6.022 x 10^23) gives you the number of atoms.

Atomic mass of platinum can be found on any periodic table.

Hope this helped.

7 0
4 years ago
Read 2 more answers
Identify which compound is an alkane: ch2o, c6h14, or c3h4. Explain your reasoning.
andrey2020 [161]
<h3>Answer:</h3>

               C₆H₁₄ is the only Alkane in given compounds.

<h3>Explanation:</h3>

The General Formula for Alkanes is as follow;

                                                    Cₓ H₂ₓ ₊ ₂

where;

           x  =  whole number

It means in alkanes for every x number of carbon atoms we have 2x + 2 number of hydrogen atoms. Let's apply this formula on given compounds.

CH₂O:

          As there is one carbon atom in this compound hence, the number of hydrogen atoms  present for one carbon atom in alkane must be equal to,

                                                    H₂₍₁₎ ₊ ₂

                                                    H₂ ₊ ₂

                                                    H₄

Hence, this compound is not alkane because it contains only two hydrogen atoms.

C₆H₁₄:

          As there are six carbon atoms in this compound hence, the number of hydrogen atoms present for six carbon atoms in alkane must be equal to,

                                                    H₂₍₆₎ ₊ ₂

                                                    H₁₂ ₊ ₂

                                                    H₁₄

Hence, this compound is alkane because it contains fourteen hydrogen atoms.

C₃H₄:

          As there are three carbon atoms in this compound hence, the number of hydrogen atoms present for three carbon atoms in alkane must be equal to,

                                                    H₂₍₃₎ ₊ ₂

                                                    H₆ ₊ ₂

                                                    H₈

Hence, this compound is not alkane because it contains only four hydrogen atoms.

8 0
3 years ago
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