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andrew11 [14]
3 years ago
6

While following the Dumas method, a student assumes that the contents of the container are the same temperature as the water bat

h. If this is NOT true, and the material in the container is cooler, how will this influence the calculations?
A. The calculated Molar Mass will be smaller.

B. The calculated Molar Mass will not be affected.

C. The calculated Molar Mass will be larger.
Chemistry
1 answer:
Nataliya [291]3 years ago
5 0

Answer:

A

Explanation:

the Molar mass will be smaller as the content of the container is not directly proportional to the temperature of the water bath.

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10 pointss..******^^
Kisachek [45]

Answer:

close off completely

Explanation:

get wider

7 0
2 years ago
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15 mL of acid 2 M was added to 20 mL of base 2 M into a calorimeter at room temperature (24 oC). The reaction mixture reached a
erik [133]

Answer:

here:

Explanation:

The changes in temperature caused by a reaction, combined with the values of the specific heat and the mass of the reacting system, makes it possible to determine the heat of reaction.

Heat energy can be measured by observing how the temperature of a known mass of water (or other substance) changes when heat is added or removed. This is basically how most heats of reaction are determined. The reaction is carried out in some insulated container, where the heat absorbed or evolved by the reaction causes the temperature of the contents to change. This temperature change is measured and the amount of heat that caused the change is calculated by multiplying the temperature change by the heat capacity of the system.

The apparatus used to measure the temperature change for a reacting system is called a calorimeter (that is, a calorie meter). The science of using such a device and the data obtained with it is called calorimetry. The design of a calorimeter is not standard and different calorimeters are used for the amount of precision required. One very simple design used in many general chemistry labs is the styrofoam "coffee cup" calorimeter, which usually consists of two nested styrofoam cups.

When a reaction occurs at constant pressure inside a Styrofoam coffee-cup calorimeter, the enthalpy change involves heat, and little heat is lost to the lab (or gained from it). If the reaction evolves heat, for example, very nearly all of it stays inside the calorimeter, the amount of heat absorbed or evolved by the reaction is calculated.

8 0
3 years ago
SOMEONE HELP MEEEE
slavikrds [6]
These are not questions but the directions or guide to completing your assignment.

I will provide you will with a choice of concept maps you can use:

- tree map

- circle maps

-comparison map ( might be best)

Please vote my answer branliest! Thanks.
8 0
3 years ago
Read 2 more answers
Can someone help me please
Tanya [424]
I believe that the correct answer would be energy since you need energy for any kind of chemical change to occur. I hope this helped you with your question! If you have any questions please let me know and I might be able to further assist you.
6 0
3 years ago
When nad becomes nadh, it is being? oxidized and releasing chemical energy. reduced and gaining chemical energy. oxidized and ga
3241004551 [841]

When NAD becomes NADH, it is being reduced and gaining chemical energy.

Nicotinamide adenine dinucleotide (NAD), a coenzyme, can exist in two forms, NAD⁺ (oxidized) and NADH (reduced form).

Electrons and protons released in catabolism reactions are attached to NAD⁺. The conversion of NAD⁺ to NADH is important reaction for production of ATP during the cellular respiration.

Reduction is lowering oxidation number because element, ion or compound gain electrons.

Chemical equation for reaction of reduction of NAD⁺ (see picture below):

NAD⁺ + 2e⁻ + H⁺ → NADH

Nicotinamide adenine dinucleotide (NAD) is made of two nucleosides joined by pyrophosphate.

More about reduction :brainly.com/question/25334331

#SPJ4

8 0
1 year ago
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