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rosijanka [135]
3 years ago
10

The bullet train was traveling at a speed of 200mi/hr for 2 hours. What

Chemistry
1 answer:
viva [34]3 years ago
7 0

Answer:

Distance is speed x time

So 200 x 2 =400mi

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igor_vitrenko [27]

Answer:

164

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What mass of oxalic acid dihydrate, H2C2O4•2H2O, is needed to make a 0.357 M solution of oxalic acid in a 250.0mL volumetric fla
GalinKa [24]

Molarity is expressed as the number of moles of solute per volume of the solution. The mass of oxalic acid dihydrate needed for the solution is calculated as follows:

Amount in moles: (0.357 mol H2C2O4•2H2O / L) (.250 L ) = 0.0893 mol H2C2O4•2H2O


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Hope this answers the question. Have a nice day.

5 0
3 years ago
A force of 20 N acts upon 5 kg block caculate the accerleration of the object
Vedmedyk [2.9K]

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\boxed{\text{4 m $\cdot$ s$^{-2}$}}

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a = \dfrac{F}{m} = \dfrac{\text{20 N}}{\text{5 kg}} \times \dfrac{\text{1 kg$\cdot$ m $\cdot$ s$^{-2}$}}{\text{1 N}} = \text{4 m $\cdot$ s$^{-2}$}\\\\\text{The acceleration of the object is } \boxed{\textbf{4 m $\cdot$ s$^{\mathbf{-2}}$}}

 

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Polyatomic ions
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I believe the answer is A.
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He discovered electrons.
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