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3 years ago

Which type of energy would digesting

Chemistry

2 answers:

Anastasy [175]3 years ago

8 0

Answer:

Explanation:

8_murik_8 [283]3 years ago

3 0

Answer:

F . chemical

Explanation:

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A laser pulse with wavelength 525 nm contains 4.40 mj of energy. How many photons are in the laser pulse

Alexandra [31]

The laser pulse in this question has a wavelength of $\lambda=524 nm=525\times 10^{-9}m$ . To solve this problem, we first have to calculate the energy of a single photon in the laser pulse. The equation for calculating the energy of a single photon of an electromagnetic wave is $E=\frac{hc}{\lambda}$ where $c$ is the speed of light, $h$ is planks constant and $\lambda$ is the wave length of the photons.

For this problem, $c=3.0\times 10^8m/s$ , $h=6.63\times10^{-34}J.s$ and $\lambda=525\times 10^{-9}m$ . We use these values to calculate the energy of the photon as shown below,

$E=\frac{hc}{\lambda} \\E=\frac{(6.63\times 10^{32}Js)\times(3.0\times10^8m/s)}{525\times 10^{-9}m} \\E=3.79\times 10 ^{-19}J.$

Now that we know the energy for a single photon, we will divide the total energy given by the energy of one photon to get the number of photons in the pulse. The number of photons $n$ is calculated as shown below,

$n=\frac{4.4\times 10^{-3}J}{3.79\times10^{-19}J} =1.16\times 10^{16}$ . There are $1.16\times 10^{16}$ photons.

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3 years ago

According to the video, what are some fields the work of Chemists affect? Check all that apply. energy development medicine anal

tresset_1 [31]

Energy development, medicine, food process.

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3 years ago

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What will be kept the same (control) in the test?

Vitek1552 [10]

The control variable is the one that is kept same in the test an throughout the test

Explanation:

The scientific constant that is kept constant throughout the experiment is not changed and the value remains constant throughout the experiment and they have strong influence in the results

To test the relationship between the dependent and the independent variables determination of the control variable is necessary and the resulting value changes if the control variables are not kept constant throughout the experiment

This will also bring about the co relationship between dependent variable and the independent variable

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3 years ago

1. Which statement is true about the relationship between chromosomes, genes and

taurus [48]

Answer:

the answer is C.

Explanation:

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3 years ago

A sample of an unknown liquid has a volume of 24.0 mL and a mass of 6 g. What is its density? Show your work or explain how you

kobusy [5.1K]

The answer would be 0.25 g/mL.
I determined the density by dividing the mass by the volume which gives you the density. D = mass/volume.
<span>6 g / 24 mL = 0.25 g/mL </span>

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3 years ago

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