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4 years ago

GIVING BRAINLIEST!! HELP ASAP!!

1 answer:

4 0

The car stopped due to a gravitational pull (gravity slowing it down) the energy is converted to kinetic energy and heat energy.

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How are cholesterol and bile related? Thank you!

Alchen [17]

One of the major functions of cholesterol is in making bile acid these are synthesized in the liver from cholesterol and secreted in bile. It is used in the absorption of fat. Cholesterol is then reabsorbed in the lower intestine and recycled.

8 0

3 years ago

Why must a chemistry experiments performed in a well ventilated room?

Elina [12.6K]

The best answer would be because there might be an accident.

4 0

3 years ago

Structure of 2,6-diiodo-4-methyl-5-propylheptane

ira [324]

Explanation:

2,6-Dibromo-4-isopropylphenol

2432-16-8

2,6-dibromo-4-propan-2-ylphenol

Phenol, 2,6-dibromo-4-(1-methylethyl)-

4-isopropyl-2,6-dibromophenol

5 0

3 years ago

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.

5 0

3 years ago

What is the concentration of hydrogen ion with the poh of 11.5

ankoles [38]

PH +pOH = 14

(14 - 11.5) = 2.5 (the ph is 2.5)

NOW, Ph = -lg (H*)

apply the formula

6 0

3 years ago