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Katen [24]
2 years ago
11

What is the speed of a car that covers 250 miles in 5 hours?

Chemistry
1 answer:
Lapatulllka [165]2 years ago
5 0
250miles is distance
5hours is time
Speed = distance/time
Speed = 250/5
Speed =50miles per hour
50mph

Hope that helps :)
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Beth has a one-day-old baby daughter. When Beth puts her finger in the baby’s hand, the baby grasps her finger. Which statement
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Answer:

The baby`s reflex to grab is an innate behavior.

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3 years ago
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What is the ph of a 0.20 M solution of NH4Cl? [Kb(NH3) = 1.8 x 10^-5]
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"NH4+ <----> NH3 + H+  

The constant of this equilibrium is: K = Kw / Kb = 1 x 10^-14 / 1.8 x 10^-5 =5.56 x 10^-10  

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8 0
3 years ago
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B. What do you notice about the number of atoms in one mole?
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5 0
3 years ago
Which type of substances have chemical bonds that are not directional and valence electrons that move freely between the atoms?
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5 0
3 years ago
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What is the pressure of 0.5 mol of nitrogen gas in a 5 L container at 203 K
vlada-n [284]

Answer:

=1.666 liters

Explanation:

1 mole of a has at standard temperature and pressure occupies a volume of 22.4 liters.

0.5 moles of nitrogen occupy a volume of (0.5 moles×22.4 dm³/mol)/ 1

=11.2 liters.

Standard pressure= 1 atmosphere (Atm)

Standard temperature = 273.15 Kelvin

According to Combined gas equation, P₁V₁/T₁=P₂V₂/T₂

Let us take the conditions under standard conditions as the reference, with the subscript 1 and the conditions under the 5L container to be scenario 2 with subscript 2.

Therefore P₂ =P₁V₁T₂/T₁V₂

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P₂= (1 atm× 11.2L ×203K)/ (273K×5L)

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5 0
3 years ago
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