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cupoosta [38]
3 years ago
9

1. Miss White, Miss Black, and Miss Gray are on a day trip together. One is dressed in white, one in black, and one in gray. "Is

n't it strange," says Miss Gray, "that the colors of our dresses match our names, but not one of us is wearing a dress that matches her own name?" "That is strange!" said the lady in white. What is the color of each lady's dress?
SAT
1 answer:
Bad White [126]3 years ago
5 0

Answer: miss Grey is wearing the white dress.

Miss white is wearing the grey dress

miss black is wearing the white dress

Explanation: "Isn't it strange," says Miss Gray, "that the colors of our dresses match our names, but not one of us is wearing a dress that matches her own name?"

The above statement shows that miss Grey is either wearing a white or black dress.

That is strange!" said the lady in white: the lady in white can't be miss white, so she's either miss Grey or miss black. But miss Grey can't wear Grey so the lady in white is miss black.

This leaves miss Grey wearing white and miss white wearing Grey.

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When 2. 0 m aqueous solutions of sodium bicarbonate and hydrochloric acid react, it produces carbon dioxide, water and sodium ch
OLEGan [10]

The number of mole of carbon dioxide, CO₂ formed from the reaction is 0.0632 mole.

<h3>How to determine the mole of NaHCO₃</h3>
  • Molarity of NaHCO₃ = 2 M
  • Volume = 31.6 mL = 31.6 / 1000 = 0.0316 M
  • Mole of NaHCO₃ =?

Mole = Molarity x Volume

Mole of NaHCO₃ = 2 × 0.0316

Mole of NaHCO₃ = 0.0632 mole

<h3>How to determine the mole of CO₂</h3>

NaHCO₃ + HCl —> CO₂ + H₂O + NaCl

From the balanced equation above,

1 mole of NaHCO₃ reacted to produce 1 mole of CO₂.

Therefore,

0.0632 mole of NaHCO₃ will also react to produce 0.0632 mole of CO₂.

Thus, 0.0632 mole of CO₂ was obtained from the reaction

Learn more about stoichiometry:

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8 0
2 years ago
One of the functions of the ______ is to maintain body temperature.
Cloud [144]
Hi hope this helps you!

4 0
2 years ago
Jane is saving to buy a cell phone. She is given a $100.00 gift to start and saves $35 a month from her allowance. So after 1 mo
Bezzdna [24]

Answer:

Yes

Explanation:

becuase she saves the same amount money every month

it's linear

3 0
3 years ago
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How did Hongwu follow the teachings of Confucius? by building chariots of porcelain by encouraging exploration beyond China by m
enot [183]

Answer:

The correct answer is D) by making sure that everyone could earn a living.

Explanation:

Hongwu, was the founder of the Ming Dynasty. He decided to make so reformations in the government of China that centralized much of decisions on him. He believed in the teachings of Confucious and the traditional rituals he taught. He followed the Mandate of Heaven and controlled every aspect of the Empire.

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3 years ago
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A linear machine is connected as shown in Fig. 1. The input source voltage Vin=10V, the internal resistance Rin=0.05Ω. The appli
galina1969 [7]

It is important to note that the direct of flow of the electricity current in the Linear Machine is anti-clockwise direction. The resultant effect of this is such that is stand at variance with the change in flux as force is going the right direction. See attached Image (Illustration I).

<h3>What is the magnitude of the current?</h3>

Recall that Force (f) = il xB

Given that Force (F) = 10N; and

Magnetic Field Density B = 0.5T

Hence,

10 = i x 0.2 x 0.5  

[Note that Width is converted to Meters from millimeters that is 200 mmm = 0.2m]

10 = 0.1i

i = 10/0.1

i = 100A

<h3>What is the Induced Voltage Across the metal bar?</h3>

Note that Vg = Vde + IR

Vg = 10 + 100 x 0.05

Vg = 10 + 5

Vg = 15v

<h3>What is the final speed of the metal bar?</h3>

The final speed of the bar is given as V

Recall that Induced Voltage is VB x L

That is:

15 = V x 0.5 x 0.2;

15 = 0.1 V

make V the subject of the formula:

V = 15/0.1

V = 150m/s

<h3>What is the status of the Machine? a motor or generator?</h3>

Given that the current being supplied is  in DC hence the machine is a generator. [Vdc x i]

<h3>What is the electric power of the source?</h3>

The electric power of the source is:

Vdc x i

= 10 x 100

= 1,000 watts

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2 years ago
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