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vlada-n [284]
3 years ago
7

Suppose that you are a scientist who studies climate changes. While examining the rings of tree trunks, you notice several very

large tree rings. What can you conclude about the climate during those years?
Chemistry
2 answers:
alexandr1967 [171]3 years ago
8 0

Answer:

The climate was wet and cold

Explanation:

ValentinkaMS [17]3 years ago
7 0

Answer:

The large tree rings allow you to conclude that the climate was either very warm or wet during those growing seasons, because greater than normal growth occurred.

Explanation: It is the edge sample response

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a propane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. which condition of the gas
earnstyle [38]

Answer:

The pressure remains constant

Explanation:

this is an example in charles law where as the temperature increases so does the volume.

5 0
3 years ago
Read 2 more answers
In an electrolytic cell, the magnitude of the standard cell potential is the:______
melamori03 [73]

Answer:

a. minimum voltage that must be supplied for a redox reaction to occur

c. always equal to Eanode - Ecathode

Explanation:

In an electrolytic cell;  The electromotive force(the maximum standard potential difference) of the cell formed by the system is defined as the standard electrode potential of the right handed electrode minus the standard electrode potential of the left hand electrode. (i.e \mathbf{E^{\theta}_{cell}=E_{anode} - E_{cathode}} )

As we all known that the process by which chemical energy is being converted to electrical energy is called the Electrochemical cell. It consists of two half cells , an oxidation half cell reaction and a reduction half-cell reaction.The overall redox reaction results in a flow of electrons in an electric current which is produced by a minimum voltage.

Therefore, option a and c are both correct.

6 0
4 years ago
Without doing any calculations, match the following thermodynamic properties with their appropriate numerical sign for the follo
siniylev [52]

Answer:

∆H > 0

∆Srxn <0

∆G >0

∆Suniverse <0

Explanation:

We are informed that the reaction is endothermic. An endothermic reaction is one in which energy is absorbed hence ∆H is positive at all temperatures.

Similarly, absorption of energy leads to a decrease in entropy of the reaction system. Hence the change in entropy of the reaction ∆Sreaction is negative at all temperatures.

The change in free energy for the reaction is positive at all temperatures since ∆S reaction is negative then from ∆G= ∆H - T∆S, we see that given the positive value of ∆H, ∆G must always return a positive value at all temperatures.

Since entropy of the surrounding= - ∆H/T, given that ∆H is positive, ∆S surrounding will be negative at all temperatures. This is so because an endothermic reaction causes the surrounding to cool down.

3 0
3 years ago
PLEASE HELP!! EXPLAIN YOUR ANSWER PLEASE! :)
GaryK [48]
The formula for force is F=ma. Because weight is a measure of force, then we can substitute the weight of the meteor, 3204 N, for F in the the equation for force. We also know that the acceleration of gravity on Earth is 9.8 m/s^2. To find the mass, simply divide both sides of the equation by the value of acceleration to get
m =   \frac{f}{a}  =  \frac{3204}{9.8}  = 326.9
Therefore, the value of the mass of the meteor is 326.9 kg.
8 0
4 years ago
Pls help I will give brainpower to who ever. Helps
trasher [3.6K]

Answer:

Their identity changes in both Reaction A and Reaction B.

4 0
3 years ago
Read 2 more answers
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