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-BARSIC- [3]
3 years ago
9

1. The speed limit on most city streets is (25 miles). How many meters per minute

Chemistry
1 answer:
irina1246 [14]3 years ago
3 0

Answer:

Speed = 670.56 \frac{m}{min}

Explanation:

Given

Speed = \frac{25 mi}{hr}

Required

Convert to meters per minutes

Speed = \frac{25 mi}{hr}

Start by converting the speed from miles to meters

1\ mile = 1609.34\ meters.

So, we have:

Speed = \frac{25 * 1609.34\ m}{hr}

Speed = \frac{40233.5\ m}{hr}

Next, we convert time from hours to minutes

1\ hour = 60\ minutes

So, we have:

Speed = \frac{40233.5\ m}{60\ min}

Speed = 670.56 \frac{m}{min}

<em>Hence, the equivalent of 25 miles per hour is 670.56 meters per minutes</em>

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Explain why a halogen bulb has a longer bulb life than a traditional incandescent bulb filled with argon.
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Answer:

The halogen bulb lasts longer because the filament lasts longer. It can have twice the life of an incandescent and use the same amount or slightly less (10%) electricity.

Explanation:

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3 years ago
Question 1<br> What does the "strong force" do?<br> What does the strong force do?
pashok25 [27]

Answer: The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons. It also holds together the atomic nucleus and underlies interactions between all particles containing quarks.

Explanation:

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4 years ago
Predict the color of the flame for the compound sodium hydroxide, naoh. explain your reasoning.
Lemur [1.5K]
I would predict the color to be yellow-orange because the first element in the formula, and
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6 0
4 years ago
II. Practice An ideal gas occupies 5 L at atmospheric pressure and 300 K (point A). It is warmed at constant volume to 3 atm (po
prohojiy [21]

Answer:

The process can be represented as shown in the figure below; having got the diagram, we can solve for the questions.

A. the number of moles of gas used

n = PV/ RT = (1.013 *10^5 Pa) * (5.0 *10^-3 m^3) / (8.314 * 300)

n =  5.065 * 10^2 / 2494.2

n = 0.00203 *10^2

n = 0.203 moles

B. Temperature at point C (Tc)

Pa/Ta= Pb/Tb

Tb = Pb *Ta / Pa

Tb = 3 * 300 / 1

Tb = 900 K

Since Tb = Tc = 900 K

C. For process AB,

work done is zero

For process BC,

work done = -nRTbln (Vc/Vb)

W = -(0.203 * 8.314 * 900 ln (3)  

W = -(1.518 kJ ln 3

W = -1.67 kJ

For process CA,

W = -P V =-nRT

W = -(0.203 * 8.314 * (-600))

W = 1.01 kJ

Explanation:

3 0
4 years ago
What is the molarity of a solution that has 5.000 grams of NaOH dissolved to make 700.0 mL of solution?
Andreas93 [3]

Answer:

0.178 M

Explanation:

First we <u>determine the molar mass of NaOH</u>, using the <em>given molar masses </em>of the elements:

  • Molar Mass of NaOH = Molar Mass of Na + Molar Mass of O + Molar Mass of H
  • Molar Mass of NaOH = 40 g/mol

Then we<u> convert 5.000 grams of NaOH into moles</u>, using its <em>molar mass</em>:

  • 5.000 g ÷ 40 g/mol = 0.125 mol

Now we <u>convert 700.0 mL into L</u>:

  • 700.0 mL / 1000 = 0.700 L

Finally we <u>calculate the molarity of the solution</u>:

  • Molarity = moles / liters
  • 0.125 mol / 0.700 L = 0.178 M

6 0
3 years ago
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