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seropon [69]
3 years ago
10

What pH did you estimate for ammonia using the pHydrion paper?

Biology
1 answer:
klio [65]3 years ago
6 0

Answer: Between 8 and 14

Explanation: Ammonia is an inorganic compound of formula NH₃. Also known as ammonium hydroxide, it behaves as a weak base.

pHydrion paper is a chemical test indicator, i.e., it indicates the pH of a substance.

If inserted in Ammonia, pHydrion will indicate a range of 8 to 14 because in pH scale, indication of base is over 8 and up to 14. The exact number depends on the hydrogen ion concentration of the substance.

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Why is it important that the location of fossils found in the ground is recorded?
Eddi Din [679]

Answer:

The fossil record helps paleontologists, archaeologists, and geologists place important events and species in the appropriate geologic era.

Explanation:

It is based on the Law of Superposition which states that in undisturbed rock sequences the bottom layers are older than the top layers.

3 0
2 years ago
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Whats the relationship between an owl and mice could be described as?
Ksenya-84 [330]
The relationship is, the owl is the predator, and the mouse is prey.
6 0
3 years ago
A student melts 50.0 grams of ice using 16650 j of energy. what is the heat of fusion of ice?
mojhsa [17]
The heat of fusion of the ice is the amount of energy that is required in order to melt one gram of ice. In this item, in order to solve for the heat of fusion, we simply have to divide the given energy by the mass. 
                     heat of fusion = 16650 J / 50 g = 333 J/g
Thus, the heat of fusion of the ice is 333 J/g. 

5 0
3 years ago
Smita observed the onion peel under microscope and noted the following observations. Lalitha marked the incorrect one. What is i
Ganezh [65]

Answer:

C

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Irregular shape

5 0
3 years ago
The output region is the site of ______________________.
tester [92]

Answer:

The correct answer is option C (voltage gated Na+ channels).

Explanation:

Output region or axon terminal is the structure of neuron which transmits the signals to other nerve cells.

The signal is transferred via action potential generated by the dendrite cell which moves along the axon and reaches the synaptic junction.  

At the synaptic junction, voltage-gated channel (Na+) channels located in the membrane of the axon terminal cell opens due to the changes in the electric membrane potential which play important role in returning the depolarized cell to a resting state.

Thus, option C (voltage-gated Na+ channels) is the correct answer.

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