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3 years ago

5

Teeth, tongue, throat, stomach, small intestines, large intestines, and rectum are all part of ___________ system during the sys

tematic examination.
a. urogential
b. gastroinstestinal
c. integumentary
d. nervous

2 answers:

AlladinOne [14]3 years ago

8 0

Answer: gastrointestinal

Explanation:

const2013 [10]3 years ago

3 0

The answer is B. Gastrointestinal.

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Solid iron prllets are heated, melted and drawn into wires. This is an example of a chemical reaction. True or False

monitta

Answer:

False

Explanation:

It is not true that this is an example of a chemical reaction. This is a typical example of physical reaction.

Most physical changes are often phase changes.

A phase change is a change in the physical state of a body.
In this change, it is from solid to liquid.
Now new substances are formed.
When substances are changed from one form to another, it is a physical change.

In a chemical change, a new substance is formed at the end of the process.

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2 years ago

Which electron configuration is magnetic, paired or unpaired electrons

NISA [10]

Answer:

paired electrons is magnetic configuration

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2 years ago

A particle that orbits the nucleus in an atom is called a(n

Morgarella [4.7K]

Particles that orbit the nucleus are called electrons.

Explanation: Electrons are negatively charged particles arranged in orbits around the nucleus of an atom and determining all of the atom's physical and chemical properties except mass and radioactivity.

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3 years ago

Read 2 more answers

CHEMISTRY QUESTION 20 pts.... URGENT

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Answer:

E i is like Math so I think this will help you

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3 years ago

When a compound containing cesium ions is heated in a Bunsen burner flame, photons with an energy of 4.30 x 10-19 J are emitted.

inessss [21]

<u>Answer:</u> The wavelength of the flame is 462 nm and color of cesium flame is blue.

<u>Explanation:</u>

To calculate the wavelength, we use Planck's equation, which is:

$E=\frac{hc}{\lambda}$

where,

E = Energy of 1 photon = $4.30\times 10^{-19}J$

h = Planck's constant = $6.625\times 10^{-34}J.s$

c = speed of light = $3\times 10^8m/s$

$\lambda$ = wavelength = ?

Putting values in above equation, we get:

$4.30\times 10^{-19}=\frac{6.625\times 10^{-34}J.s\times 3\times 10^8m/s}{\lambda }\\\\\lambda=\frac{6.625\times 10^{-34}J.s\times 3\times 10^8m/s}{4.30\times 10^{-19}}=4.62\times 10^{-7}m=462nm$

The range of wavelength of blue light lies in range of 500 nm - 435 nm

The calculated wavelength lies in the above range. So, the color of the cesium flame is 462 nm

Hence, the wavelength of the flame is 462 nm and color of cesium flame is blue.

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3 years ago