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kotegsom [21]
3 years ago
7

Terry heats two different masses of substance A to different temperatures, and measures the amounts of both carbon dioxide and w

ater produced. Which of the following is true about this experiment?
Chemistry
2 answers:
kotegsom [21]3 years ago
7 0

This experiment is uncontrolled because two different masses of substance A are used.

Explanation:

From the given options and the details of the experiment, it is easy to infer that the experiment is uncontrolled.

A controlled experiment is a specially designed experiment that is used to understand a single variable or set of variables.

  • The experiment above is not a controlled one.
  • The reaction used different masses.
  • The amount of heat supplied also varied
  • They were heated to the different temperatures.
  • There was nothing being controlled in the experiment.

learn more:

Experiment brainly.com/question/5096428

#learnwithBrainly

GaryK [48]3 years ago
5 0

Answer:

This experiment is uncontrolled because two different masses of substance A are used.

Explanation:

done the topic

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What is the correct measurement for solubility?
Montano1993 [528]
Other commonly used units include g/L (grams of solute per liter of solution) and m/L (moles of solute per liter of solution). Solubility units always express the maximum amount of solute that will dissolve in either a given amount of solvent, or a given amount of solution, at a specific temperature.
3 0
3 years ago
What mass of O2 is needed to completely react with 500 g of Fe
Zina [86]

Answer:

solution given:

Explanation:

4Fe +3O2------------>2Fe2O3

4mole. 3mole. 2 mole

224g. 96g. 320g

we have

224 g of fe needed to react completely with 96 g of O2

500g of fe needed to react completely with

96 ×500/224=214.3g of O2

214.3g of O2 is a required answer.

8 0
2 years ago
How do I solve this?
Xelga [282]

Answer:

Explanation:

When you divide exponentials, you subtract the powers. For the numbers infront, just use a basic calculator for.

7.95/6.02 = 1.32

10^22/10^23 = 10^-1

1.32 x 10^-1 is your answer

7 0
3 years ago
If a gas in a closed container is pressurized from 15.0 atmospheres to 16.0
Yuki888 [10]

Answer:

T₂ = 317.87 K

Explanation:

Given data:

Initial pressure = 15 atm

Final pressure = 16 atm

Initial temperature = 298 K

Final temperature = ?

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

15 atm / 298K = 16 atm/T₂

T₂ = 16atm × 298 K / 15 atm

T₂ = 4768 atm. K / 15 atm

T₂ = 317.87 K

4 0
3 years ago
How many grams of perchloric acid, HClO4, are contained in 39.1 g of 74.9 wt% aqueous perchloric acid
Leno4ka [110]

Answer:

29.3 g HClO₄

Explanation:

We have 39.1 grams of 74.9 wt% aqueous perchloric acid solution, that is, there are 74.9 grams of perchloric acid in 100 grams of perchloric acid solution. The mass, in grams, of perchloric acid contained in 39.1 grams of perchloric acid solution is:

39.1 g Solution × (74.9 g HClO₄/100 g Solution) = 29.3 g HClO₄

5 0
3 years ago
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