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posledela
4 years ago
5

What does the the release or absorption of energy indicate?

Chemistry
1 answer:
Colt1911 [192]4 years ago
8 0
C.physical and chemical changes.
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Okay im clueless and over thinking this question can someone please help me out
Crank

A cookie made from flour, eggs, sugar, butter, and chocolate chips is an example of a heterogeneous mixture.

Also, mixing the sugar flavoring in water, since you're mixing two different states of matter.

6 0
3 years ago
Do you expect to find an atom with 26 protons and mass number of 52 in nature
PilotLPTM [1.2K]
Yes, i expect to find an atom with 26 protons and mass number of 52, because if it has different number of neutrons it could be a type of isotope. As if there is different number of neutrons in an atom, they make an isotopes of that atom and if we add the number of neutrons and number of  protons we will find the mass number of that atom.
6 0
3 years ago
Which of the following causes a substance to change its state of matter from a solid to a liquid?
Sati [7]

Answer:

C) Increases the pressure

Explanation:

Increasing the pressure might result in the change of temperature of the substance, which would change its state of matter.

6 0
3 years ago
Read 2 more answers
7. When solid carbon reacts with oxygen gas to produce carbon dioxide gas, woul the triangle H value be on the reactant or produ
garik1379 [7]

When solid carbon reacts with oxygen gas to produce carbon dioxide gas. the deltaH (enthalpy change ) value is negative .DeltaH would be on the product side of the equation.

<h3>What is enthalpy change? </h3>

In a thermodynamic system, energy is measured by enthalpy. Enthalpy is a measure of a system's overall heat content and is equal to the system's internal energy plus the sum of its volume and pressure.

Knowing whether q is endothermic or exothermic allows one to characterise the relationship between q and H. An endothermic reaction is one that absorbs heat and demonstrates that heat from the environment is used in the reaction, hence q>0 (positive). For the aforementioned equation, under constant pressure and temperature, if q is positive, then H will also be positive. In a similar manner, heat is transferred to the environment when it is released during an exothermic reaction. Thus, q=0 (negative). Therefore, if q is negative, H will also be negative.

Learn more about enthalpy change here :

brainly.com/question/1445358

#SPJ13

7 0
1 year ago
Is trimming a bush because it grows too tall a chemical or physical change
professor190 [17]

Answer:

Physical Change

Explanation:

The bush is changing shapes, not changing what it is.

8 0
4 years ago
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