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LuckyWell [14K]
4 years ago
10

What is the answer to this??

Chemistry
2 answers:
Leviafan [203]4 years ago
6 0

Answer:

A

Explanation:

Nataly_w [17]4 years ago
4 0
Anticipating is a grip on their hearts. Sorry if I'm wrong.
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True or false?<br><br> In order for an ionic bond to form, there needs to be a cation and an anion.
olya-2409 [2.1K]

Answer:

True  

Step-by-step explanation:

An ionic bond is the attraction between a cation and an anion.

If there is no cation or anion, there is no ionic bond.


6 0
4 years ago
What is the shape around each carbon atom in ethylene, H C CH ? The represents a double bond.
Nina [5.8K]

Answer:

I'm not 100% sure,but I think its trigonal pyramidal

4 0
3 years ago
A molecule is known to have a molar absorptivity of 18,650 at a certain wavelength. A spectrometer is tuned to this wavelength a
iren2701 [21]

Answer:

17,932.69 g/mol is the molecular weight of the substance.

Explanation:

Using Beer-Lambert's law :

Formula used :

A=\epsilon \times c\times l

where,

A = absorbance of solution = 1.04

c = concentration of solution =?

l = length of the cell = 1 cm

\epsilon = molar absorptivity of this solution = 18,650 M^{-1} cm^{-1}

Now put all the given values in the above formula, we get the molar absorptivity of this solution.

1.04=18,650 M^{-1} cm^{-1}\times c)\times (1cm)

c = 5.576\times 10^{-5} M

Concentration=\frac{\text{Mass of compound}}{\text{Molecular mass of compound}\times V}

V = Volume of the solution in L

Molecular weight of the substance = x

V = 100 mL = 0.1 L

Mass of the substance = 100 mg = 0.1 g

5.576\times 10^{-5} M=\frac{0.1 g}{x\times 0.1 L}

x = 17,932.69 g/mol

17,932.69 g/mol is the molecular weight of the substance.

6 0
3 years ago
Increasing the temperature increase the rate of a reaction by doing which of the following
posledela

Answer:

Increase in temperature increases the average kinetic energy of the reactant molecules, hence lowering the activation energy of the reaction.

8 0
3 years ago
A partir de lo propuesto por Bohr en 1913, que postulado es correcto:
TEA [102]

Answer:

Primer postulado:

Así Bohr asumió que el átomo de hidrógeno puede existir solo en ciertos estados discretos, los cuales son denominados estados estacionarios del átomo. En el átomo no hay emisión de radiación electromagnética mientras el electrón no cambia de órbita.

Explanation:

4 0
3 years ago
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