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tensa zangetsu [6.8K]
3 years ago
9

True or False: When you measure something with a ruler, you should NOT estimate an extra digit. You only need to report the numb

ers you see on the ruler.
Chemistry
1 answer:
sveticcg [70]3 years ago
5 0

Answer:

False

Explanation:

It is important to give exact measurements.

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Convert 2,247,896 milligrams (mg) to pounds (lb) rounding to 3 sig figs
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4.96 would be you’re answer
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What is the total number of hydrogen atoms in a molecule of heptyne?
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Answer:

12

Explanation:

alkyne formula is CnH2n-2

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A gas occupies 100 mL at 150. kPa. Find its volume at 200. kPa. You must show all your work to receive credit. Be sure to identi
PtichkaEL [24]

The Boyle-Mariotte's law or Boyle's law is one of the laws of gases that <u>relates the volume (V) and pressure (P) of a certain amount of gas maintained at constant temperature</u>, as follows:

PV = k

where k is a constant.

We can relate the state of a gas at a specific pressure and volume to another state in which the same gas is at different P and V since the product of both variables is equal to a constant, according to the Boyle's law, which will be the same regardless of the state of the gas. In this way,

P₁V₁ = P₂V₂

Where P₁ and V₁ is the pressure and volume of the gas to a state 1 and P₂ and V₂ is the pressure and volume of the same gas in a state 2.

In this case, in the state 1 the gas occupies a volume V₁ = 100 mL at a pressure of P₁ = 150 kPa. Then, in the state 2 the gas occupies a volume V₂ (that we must calculate through the boyle's law) at a pressure of P₂ = 200 kPa.  Substituting these values in the previous equation and clearing V₂, we have,

P₁V₁ = P₂V₂ → V₂ = \frac{P1V1}{P2}  

→ V₂ = \frac{100 mL x 150 kPa}{200 kPa}

→ V₂ = 75 mL

Then, the volume occupied by the gas at 200 kPa is V₂ = 75 mL

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Electron Identify the type of charge of the following particles in an
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Answer:

Electron charge: -1

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Proton charge: +1

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