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astra-53 [7]
3 years ago
8

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

ater produced.
Which statement is true about this experiment?

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

This experiment is well controlled because only the mass of substance A is varied.

This experiment is uncontrolled because two gaseous products are measured.

This experiment is well controlled because the masses of substance A and the products are varied.
Chemistry
2 answers:
Naddika [18.5K]3 years ago
5 0

Answer:

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

Explanation:

A controlled experiment is a structured experiment aimed at testing a particular observation or observations. The setup of a controlled experiment helps to determine the reason why a particular observation occurs and what must have led to it.

In the experiment highlighted above, different masses of a substance were used, they were heated to different temperatures. The set up does not show any correlation between the masses of substances heated and the temperatures. It is even difficult to try to predict the hypothesis for this kind of experimental set up. All the variables in play can best be assumed to be independent of one another.

Svetach [21]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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Question 4(Multiple Choice Worth 4 points)
vitfil [10]

Answer:

The quantum number that describes the orientation of an orbital within a sublevel is the magnetic quantum number.

Explanation:

There are four quantum numbers in chemistry. These are the principal quantum number, the angular momentum quantum number, the magnetic quantum number, and the spin quantum number. These all follow these three foundational rules in chemistry.

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Hund's rule states that if an orbital does not have an electron, an electron will need to fill it first before any of the other orbitals can have two electrons of differing spins.

The Aufbau principle states that all electrons will fill orbitals in an orderly fashion based on the quantum numbers.  An attachment is included of this fill order for your reference.

The four quantum numbers for chemistry are:

The principal quantum number describes the sublevel in which the orbital is located. This occurs at n = 1, 2, 3, etc. all the way to 7.

The angular momentum quantum number describes the orbital that an electron fills. It will refer to the shape and the type of orbital.  

The magnetic quantum number refers to the orientation of an orbital. Based on the angular momentum quantum number, there can be 1, 3, 5, or 7 orientations.

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Therefore, because the magnetic quantum number is the one that refers to <u>the orientation of the orbital</u>, this is our answer.

5 0
3 years ago
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Since you already found the pH for this (in #4), you subtract #4's answer from 14.
14 - (pH) = pOH
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