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OlgaM077 [116]
3 years ago
8

Which option is the most accurate description of speed?

Chemistry
2 answers:
Ostrovityanka [42]3 years ago
4 0

Answer:

3. It took 5 seconds for the ball to be displaced 5 meters from the marker

Explanation:

Speed is a scalar quantity, it shows how fast an object is moving, it doesn’t show direction of movement of the body in motion i.e the rate at which an object changes its position.

The formula for speed is distance divided by time. The second option gives us the distance covered and the time taken.

andrezito [222]3 years ago
3 0
3. is the correct option listed above.
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C12H7Cl3FNaO2 what are them elements in that chemical formula
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Calculate the moles and grams of solute in each solution. D. 2.0 L of 0.30M Na2SO4. I already have A, B, and C. Thanks!
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Find the number of moles
C = n / V
C(Concentration) = 0.30 moles / L
V ( Volume) = 2 L
n = ??
n = C * V
n = 0.30 mol / L * 2 L
n = 0.60 mol


Find the molar mass
2Na = 23 * 2 = 46 grams
1S   = 32 * 1 = 32 grams
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Find the mass
n = given mass / molar mass
n = 0.06 mol
molar Mass = 142 grams / mol
given mass = ???

given mass = molar mass * mols
given mass = 142 * 0.6
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85.2 are in a 2 L solution that has a concentration of 0.6 mol/L


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3 years ago
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