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Dennis_Churaev [7]
3 years ago
16

Which statement is true for a heating curve?

Chemistry
2 answers:
Jlenok [28]3 years ago
6 0

The correct option is B.

A heating curve refers to a graphical representation of how the temperature of a compound change when heat is added to it. The graph shows the phase transition that a substance undergoes as heat is added to it. The plateaus on the curve represent the critical temperature points where phase changes actually occur. The curve has two axes, the vertical and the horizontal axes. The temperature of the substance is typically plotted on the vertical axis while the time during which heat is applied is plotted on the horizontal axis.

lions [1.4K]3 years ago
3 0
I think it shows how the temperature of a substance changes when heated
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What happens to the concentration of the reactants and products during the course of a forward chemical reaction
chubhunter [2.5K]
Hello!

The concentration of the reactants decreases and the concentration of products increases during the course of a forward chemical reaction.

A chemical reaction is a thermodynamical process in which two or more substances (called reagents) undergo transformation by the breaking and rearrangement of their chemical bonds to form another substance(s), called products. In a forward chemical reaction, the reagents are being consumed, so their concentration will decrease, increasing the concentration of products as they are the result of the reaction. 

The study of how concentration changes with time in a chemical reaction is called reaction kinetics. 

Have a nice day!


3 0
3 years ago
How many molecules of Ca are found in a sample with 0.2 mols?
DochEvi [55]

Answer:

\boxed{1.2 \times 10^{23}\text{ atoms}}

Explanation:

6.023 × 10²³ atoms of Ca are in 1 mol of Ca

\text{No. of atoms} = \text{0.2 mol} \times \dfrac{6.023 \times 10^{23}\text{atoms }}{\text{1 mol }} = \mathbf{1.2 \times 10^{23}} \textbf{ atoms}}\\\\\text{There are }\boxed{\mathbf{1.2 \times 10^{23}} \textbf{ atoms}} \text{ atoms in 0.20 mol of Ca}

6 0
3 years ago
Which is occurring when work is being done?
Lena [83]
When the work is being done, it is likely that there is an energy being enforced and when the energy is being enforced, it is likely that the energy present is being transferred in order for the work to be able to be able to be exterted upon
6 0
3 years ago
(3.20x10^4)(0.2402) express your answer in appropriate significant figures.
yKpoI14uk [10]
7686.4 is the awnser
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3 years ago
What does this picture represent?​
Shtirlitz [24]

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Explanation:

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