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zysi [14]
4 years ago
12

Read this excerpt from Immigrant Kids. The second doctor watched for contagious and infectious diseases. He looked especially fo

r infections of the scalp and at the eyelids for symptoms of trachoma, a blinding disease. Since trachoma caused more than half of all medical detentions, this doctor was greatly feared. He stood directly in the immigrant's path. With a swift movement, he would grab the immigrant's eyelid, pull it up, and peer beneath it. If all was well, the immigrant was passed on. The purpose of this excerpt is to provide information about eye doctors and to explain how they traveled the immigrant’s path. to provide information about eye disease and to explain its medical treatment. to provide information about scalp infections and to explain how they can be prevented. to provide information about trachoma and to explain how it was diagnosed among immigrants.
Chemistry
2 answers:
Mice21 [21]4 years ago
7 0

up until this is 6AM I 66inches the sending 66

Explanation:

tight ends and I 6AM the sending o the sending the

wariber [46]4 years ago
5 0

Explanation:

the answer is D. I just took the test

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Which of the following is not a possible energy conversion for electricity?
PilotLPTM [1.2K]

A is the correct answer

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4 years ago
According to Galileo, which of the following best explains the horizontal
VLD [36.1K]

Answer:

Inertia

Explanation:

According to Galileo, the motion of a projectile can be described according to two principles.

Firstly, he argued that when the projectile is fired, it moves in straight line until it looses its impetus and falls to the ground.

The horizontal motion of the projectile is explained by the theory of inertia. According to Galileo, the two independent motions of the projectile all together leads to a mathematical curve which completely describes the motion of a projectile.

7 0
3 years ago
PLEASE HELP!
Neko [114]
O=C=O, it’s a double bond between the carbons and oxygen
7 0
3 years ago
The activation energy (E*) for 2N2O ---> 2N2 + O2 is 250 KJ. If the k for this reaction is 0.380/M at 1001oK, what will k be
Sedbober [7]

Answer:

Explanation:

GIven that:

The activation energy = 250 kJ

k₁ = 0.380 /M

k₂ = ???

Initial temperature T_1 = 1001 K

Final temperature T_2 = 298 K

Applying the equation of Arrhenius theory.

In \dfrac{k_2}{k_1 }= \dfrac{Ea}{R}( \dfrac{1}{T_1 }- \dfrac{1}{T_2})

where ;

R gas constant = 8.314  J/K/mol

In \dfrac{k_2}{0.380 }= \dfrac{250 * 10^3}{8,314}( \dfrac{1}{1001 }- \dfrac{1}{298})

In \dfrac{k_2}{0.380 }= -70.8655

\dfrac{k_2}{0.380 }= e^{-70.8655}

\dfrac{k_2}{0.380 }= 1.67303256 \times 10^{-31}

{k_2}= 1.67303256 \times 10^{-31} \times {0.380 }

{k_2}= 6.3575 \times 10^{-32}  /M .sec

Half life:

At 1001 K.

t_{1/2} = \dfrac{In_2}{k_1}

t_{1/2} = \dfrac{0.693}{0.38}

t_{1/2} = 1.82368 secc

At 298 K:

t_{1/2} = \dfrac{0.693}{6.3575 \times 10^{-32}}

t_{1/2} =1.09 \times 10^{31} \ sec

3 0
3 years ago
A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M 1.0 M nickel(II) ion solution and another elect
Katarina [22]

Answer:

<h3>So the standard electrode potential of the cell is 1.05 V</h3>

Explanation:

electrode composed of nickel in a 1.0 M

1.0 M nickel(II) ion solution and another electrode composed of silver in a 1.0 M 1.0 M silver ion solution,

connected by a salt bridge. Calculate the standard potential for this cell at 25 °C .

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Eocell = Eo cathode - Eo anode

= Eo Ag+/Ag - Eo Ni+2/Ni

=0.80 - (-0.25)

=0.80 + 0.25

= 1.05

<h3>So the standard electrode potential of the cell is 1.05 V</h3>
3 0
3 years ago
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