The transfer of a section of DNA from one organism into the DNA of another organism by scientist is called

Green light has a frequency of 6.01 x 10^14 Hz. What is the wavelength? (Round to the nearest hundredth) *

Ivahew [28]

Answer:

4.99 x 10⁻⁷ meters or 499 nanometers

Explanation:

Use the formula:

λ = c/ν, where λ = wavelength, c = the speed of light (it's constant, 2.998 x 10⁸ m/s), and ν = frequency

λ = (2.998 x 10⁸ m/s)/(6.01 x 10¹⁴ 1/s)

λ = 4.98835 x 10⁻⁷

Round to nearest hundreth and you get 4.99 x 10⁻⁷ meters, or 499 nanometers.

7 0

3 years ago

The electronic transition in a hydrogen atom from n = 7 to n = 2 emits electromagnetic radiation having a longer wavelength than

Tema [17]

Answer: I'll leave the answer rounded to three sig figs.

mark me brainlist

So, you can say that in a hydrogen atom, an electron located on

n

i

=

2

that absorbs a photon of energy

4.85

⋅

10

−

19

J

can make the jump to

n

f

=

6

.

Explanation:

The question wants you to determine the energy that the incoming photon must have in order to allow the electron that absorbs it to jump from

n

i

=

2

to

n

f

=

6

.

A good starting point here will be to calculate the energy of the photon emitted when the electron falls from

n

i

=

6

to

n

f

=

2

by using the Rydberg equation.

3 0

3 years ago

The electron configuration of an element is 1s22s22p63s1. Describe what most likely happens when an atom of this element comes n

Anastasy [175]

Answer:

The element with electron configuration 1s² 2s² 2p⁶ will most likely not react with an element having seven Valence electrons.

The electron configuration of the element in discuss is 1s² 2s² 2p⁶.

The element has enough electrons to fill it's energy level, n = 2 shell.

In essence, the element in discuss is unreactive as it has attained it's octet configuration and as such is neither in need of an electron nor ready to donate an electron.

As such, although an atom having seven Valence electrons is highly electronegative and as such is an electron attractor, the element with the full octet configuration does not react with it.

This unreactive nature of noble gases is attributed to the full octet configuration of noble gases.

P.S: The electron configuration above is the electron configuration of Neon, Ne.

5 0

3 years ago

Water’s molar mass is 18.01 g/mol. The molar mass of glycerol is 92.09 g/mol. At 25°C, glycerol is more viscous than water. Whic

Nutka1998 [239]

Answer : Option B) Glycerol because it is more viscous and has a larger molar mass.

Explanation : Viscosity is a quantity which is expressed in terms of the magnitude of internal friction in a fluid, as measured by the force acting per unit area resisting uniform flow. In simple words, due to high intermolecular forces of attraction the viscosity is increased, as there will be more resistance between the molecules for flowing.

Usually high molecular compounds have high viscosity. In this question, glycerol has high molecular weight along with high intermolecular forces of attraction between the molecules as compared to water and therefore, has high viscosity.

5 0

3 years ago

Read 2 more answers

A lab technician has 45L gas in a flexible container at a pressure of 100.0 kPa. If the technician decreases the pressure to 60.

ICE Princess25 [194]

Answer:

75 L

Explanation:

We assume that the gas in the container is an ideal gas, which is governed by the ideal gas equation : PV = nRT , where P is the pressure of the gas, V is the volume of the container, n is the number of mols of the gas, R is the universal gas constant and T is the temperature of the gas.

Here, R is a universal constant with a value of ≈ 8.314 J/mol-K. Also, given that temperature (T) is maintained constant. And since the container is closed, there is no exchange of the gas between the container and the surroundings, thus keeping the number of mols (n) of the gas constant. Hence, in the ideal gas equation, right hand side, i.e, nRT is a constant.

Initially the equation is: $P_{1}V_{1} = nRT(constant)$