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Zina [86]
3 years ago
9

The quantity of energy released or absorbed as heat during a chemical reaction is called the 28. a. temperature. c. entropy d. f

ree energy enthalpy of reaction.
Chemistry
1 answer:
Tatiana [17]3 years ago
5 0

Answer: enthalpy of reaction.

Explanation:

Temperature of the gas is defined as the degree of hotness or coldness of a body. It is expressed in units like ^0C and K

Entropy is the measure of randomness or disorder of a system. If a system moves from  an ordered arrangement to a disordered arrangement, the entropy is said to decrease and vice versa.

Free energy is the amount of energy that can be converted into useful work.

Enthalpy of the reaction is the difference between the energy of products and the energy of reactants. it is either the heat released or absorbed during the reaction. It is either positive or negative.

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Hurry I need the answer asap
kifflom [539]

Answer:

its solid

Explanation:

hope it helps u

3 0
3 years ago
PLEASE HELP!!!!!
Blababa [14]
It would be water. Since the body is 60-75% water, it is important in chemical reactions within the body.
4 0
3 years ago
If an atom has 15 protons, 14 neutrons, and 16 electrons, what is the atom's electrical charge? A. -2 B. +1 C. +3 D. -1
Amiraneli [1.4K]

The electrical charge of an atom having 15 proton, 14 neutrons and 16 electrons is -1. The correct option is D.

What is an atom?

An atom is the smallest unit of any matter which comprises of central nucleus and electrons revolving around the nucleus in definite energy shells. The atom is made up of protons, neutrons and electrons.

The electrical charge of an atom can be calculated as,

Charge of an atom = number of protons - number of electrons

Charge = 15 - 16 = -1.

The neutrons are neutral and do not contribute to the charge, the protons are positively charged and electrons are negatively charged in an atom.

Therefore, the charge of an atom with 15 protons, 14 neutrons and 16 electrons is -1. The correct answer is option D.

To learn more about atom click on the given link brainly.com/question/6258301

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3 0
1 year ago
Calcium cyanamide, CaCN2, reacts with water to form calcium carbonate and ammonia. CaCN2(s)+3H2O(l)→CaCO3(s)+2NH3(g). How many g
Norma-Jean [14]

298 g of calcium carbonate CaCO₃

Explanation:

We have the following chemical reaction:

CaCN₂ (s) + 3 H₂O (l) → CaCO₃ (s)+ 2 NH₃ (g)

number of moles = mass / molar weight

number of moles of H₂O = 161 / 18 = 8.94 moles

Knowing the chemical reaction we devise the following reasoning:

if        3 moles of H₂O produces 1 mole of CaCO₃

then  8.94 moles of H₂O produces X moles of CaCO₃

X = (8.94 × 1) / 3 = 2.98 moles of CaCO₃

mass =  number of moles × molar weight

mass of CaCO₃ = 2.98 × 100 = 298 g

Learn more about:

number of moles

brainly.com/question/1445383

brainly.com/question/516702

#learnwithBrainly

7 0
3 years ago
Peter and Jessica are both forensic scientists. Peter visits crime scenes to pr
ratelena [41]

Answer: Peter is a Field Officer and Jessica is a Lab Officer

Explanation:

For Plato it should be, Peter is a "Field officer" because he's going into the fiend of the crime scene to find his evidence

And Jessica is a "Lab officer" because she stay's in the lab to analyze the evidence brought to her by Peter  

8 0
3 years ago
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