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Aleks04 [339]
2 years ago
9

Do you use sig figs in percent errors??

Chemistry
1 answer:
leonid [27]2 years ago
3 0

Answer:

I think you use sig figs in percent error.

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In golf, a club is swung to hit a small ball resting on the ground. Golfer A holds his club a short distance behind the golf bal
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golfer b had more space giving him the opportunity to gain momentum and strength to strike the ball

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The density of plutonium is 19.84 g/cm². What is its mass if the container has<br> volume of 250 cm?
serious [3.7K]

Answer:

the answer is  7.936X 10⁻⁷kg.... the unit for volume must be cm³

Explanation:

we know,

ρ =m/v

given,

ρ =19.84/1000X(100)²= 1.984X10⁻⁶kg/m²

V (volume of the container means the volume of the element)=2.5 m³

NOW putting in the equation

1.984X10⁻⁶/2.5=m

or, m=7.936X 10⁻⁷kg(ANS)

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4 0
3 years ago
Which are characteristics of a prokaryotic cell
mel-nik [20]

Answer: a prokaryotic cell lacks a nucleus and membrane, but has flagella and bound organelles

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3 0
3 years ago
What is the molarity of a solution containing 3.5 moles of HCl in 5.0 L of water?
aleksklad [387]

Answer:

0.70 M

Explanation:

  • Molarity is the concentration of a given solution in moles per liter.
  • Molarity is given in moles per liter of solution.
  • It is calculated by dividing the moles of solute by the volume of solution.

In this case;

We are given;

Number of moles of HCl = 3.5 Moles

Volume of solvent, H₂O is 5.0 L

But, Molarity =\frac{Numberofmoles}{Volume}

Therefore;

Molarity=\frac{3.5moles}{5.0L}

                   = 0.70 M

Thus, the molarity of the solution is 0.70 M or 0.70 moles/liter

5 0
3 years ago
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