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VladimirAG [237]
3 years ago
7

Diploid cells have:

Chemistry
1 answer:
NISA [10]3 years ago
8 0

Answer:

c

Explanation:

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The atomic radii of a divalent cation and a monovalent anion are 0.62 nm and 0.121 nm, respectively. (a) Calculate the force of
Zepler [3.9K]

Answer:

\boxed{8.4\times 10^{-10} \text{ N}}

Explanation:

The formula for the force exerted between two ions is  

F = \dfrac{kq_{1}q_{2}}{r^{2}} = \dfrac{kz_{1}z_{2}e^{2}}{r^{2}}

where the Coulomb constant

k = 8.988 × 10⁹ N·m·C⁻²

Data:

z₁ = +2; r₁ = 0.62    nm

z₂ =  -1;  r₂ = 0.121 nm

Calculations:

r = r₁ + r₂ = 0.62 + 0.121 = 0.741 nm

F =\dfrac{8.988 \times 10^{9} \text{ N $\cdot$ m$^{2} \cdot$ C$^{-2}$} \times 2 \times (-1) \times ( 1.602 \times 10^{-19} \text{ C})^{2}}{(0.741 \times 10^{-9} \text{ m})^{2}}\\\\ = -\mathbf{8.4\times 10^{-10}} \textbf{ N}\\\text{The attractive force between the ions is } \boxed{\mathbf{8.4\times 10^{-10}} \textbf{ N}}

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3 years ago
5. 54 J of heat is required to raise the temperature of a 2.47g unknown substance from 17.10C to 46.70C. a) Calculate the specif
musickatia [10]
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3 years ago
A quantity of CO gas occupies a volume of 0.32 L at 0.90 atm and 323 K . The pressure of the gas is lowered and its temperature
Contact [7]
Mathematical formula of Ideal Gas Law is PV=nRT
  where: P-pressure, 
              V-volume
              n-number of moles; m/MW
              T-Temperature
              m-mass
              d-density ; m/V
              MW-Molecular Weight
              R- Ideal Gas constant. If the units of P,V,n & T are atm, L, mol & K respectively, the value of R is 0.0821 L x atm / K x mol
    
Substituting the definitions to the original Gas equation becomes:
     d= P x MW / (RxT)

Solution : d= .90atm x 28 g/mol (CO) / 0.0821Lxatm / mol x K  x 323 K
           
                d = 25.2 g / 26000 mL

                d = .0.00096 g/mL is the density of CO under the new conditions
           
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4 years ago
CHEMISTRY HELP <br><br> I don't understand this....please help? thank you in advance
Igoryamba

60 i believe i haven't did science in a while sorry if im wrong though... ._.

6 0
3 years ago
When scientists are ready to publish the results of their experiments, why is it important for them to include a description of
gizmo_the_mogwai [7]

Answer: To be able to not forget what have they done when they want to re-do it.

to make it easier for the next person to re-do the experiment.

Explanation:

the description of the procedure ensures that when the experiment  becomes of a success,specific steps are recorded for improvement of the experiment if maybe the experiment can be done at a short space of time.

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3 years ago
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