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Natasha2012 [34]
3 years ago
6

Substance that undergoes a change in a chemical reaction is

Chemistry
1 answer:
topjm [15]3 years ago
4 0
Substance that undergoes a change in a chemical reaction is
c. A reactant
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Why do atoms tend to be bonded to other atoms?
Aleks04 [339]

Answer:

Atoms are often more stable when bonded to other atoms

Explanation:

Like for example let's say ionic bonds..... Since one atom has to lose specific electrons to be stable and the other needs the electrons from the other atom to be stable.....

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ambot unsa ang answr kay kamo ra naka sabot

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216 j of energy is required to raise the temperature of aluminum from 15o to 35oc. calculate the mass of aluminum. (specific hea
kotykmax [81]
Energy is supplied to aluminium to raise the temperature of aluminium.
we can use the following equation to calculate the mass of aluminium
H = mcΔt
H - heat energy supplied 
m - mass of material 
c - specific heat capacity of aluminium
Δt - change in temperature - 35 °C - 15 °C = 20 °C
substituting the values in the equation 
216 J = m x 0.90 J°C⁻¹g⁻¹ x 20 °C
m = 12 g
mass of aluminium is 12 g
3 0
3 years ago
In which of the following sets do all species have the same number of protons?
Ipatiy [6.2K]

Among the given options, Option (D) that is O, O^2^-,O^2^+  will have the same number of protons. Hence option (D) is correct.

<h3>What are protons ?</h3>

A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron.

In option (D), All the three species (O, O^2^-,O^2^+ ) bears 8 protons but the number of electrons varies.

In any Ion, there will be no change in number of protons among the same atoms but number of electrons varies.

Therefore, Option (D)  has same atoms but different ions.

Hence, it has same number of protons. Thus the correct answer is option (D)

Learn more about Protons here ;

brainly.com/question/12535409

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How is heat transferred when a person holds an ice pack?
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I’m pretty sure it’s b.
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