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Arturiano [62]
3 years ago
10

In order to be sure that your results are accurate, you must be able to ______ your experiment.

Chemistry
1 answer:
mina [271]3 years ago
7 0
The answer is A, you must repeat your experiment to ensure you results are accurate. That is the best way to know for sure and it is what you must do to every experiment.  
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What do you predict will happen to the volume inside a container when pressure & temperature remains constant but the number
Pani-rosa [81]

Answer:

<u>increase</u>

Explanation:

<u>The Ideal Gas Equation</u>

  • PV = nRT
  • V = nRT/P
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The volume of a gas is directly proportional to the number of moles it contains. Hence, if the number of particles is increased, then the volume inside the container will <u>increase</u>

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An atom has 8 electrons and a mass of 17. What would the correct symbol be?
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I believe the answer is A.
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A sample of sulfur hexafluoride gas occupies a volume of 5.10 L at 198 ºC. Assuming that the pressure remains constant, what tem
Ludmilka [50]

Answer:

When the volume will be reduced to 2.50 L, the temperature will be reduced to a temperature of 230.9K

Explanation:

Step 1: Data given

A sample of sulfur hexafluoride gas occupies a volume of 5.10 L

Temperature = 198 °C = 471 K

The volume will be reduced to 2.50 L

Step 2 Calculate the new temperature via Charles' law

V1/T2 = V2/T2

⇒with V1 = the initial volume of sulfur hexafluoride gas = 5.10 L

⇒with T1 = the initial temperature of sulfur hexafluoride gas = 471 K

⇒with V2 = the reduced volume of the gas = 2.50 L

⇒with T2 = the new temperature = TO BE DETERMINED

5.10 L / 471 K = 2.50 L / T2

T2 = 2.50 L / (5.10 L / 471 K)

T2 = 230.9 K = -42.1

When the volume will be reduced to 2.50 L, the temperature will be reduced to a temperature of 230.9K

8 0
3 years ago
How to convert ethane to chloroethane? ​
Zigmanuir [339]

Answer:

C2H6 + Cl2 ---> CH3CH2Cl + HCl

Ethane can be converted to chloroethane via a clorination reaction. When Ethane reacts with chlorine, we get chloroethane and hydrochloric acid. When Cl2 is passed through ethane, one Cl atom displaces one of the H atoms from CH4 and ethane turns into chloroethane.

Explanation:

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List 4 observations that suggest a chemical change is occurring
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<span>1. The evolution of energy
2. the production of a gas
3. the formation of a precipitate
4. color change
</span>
4 0
4 years ago
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