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Snezhnost [94]
3 years ago
14

If two object come in contact with each other and one object is warmer than the other object what happens

Chemistry
1 answer:
Pie3 years ago
6 0

D is the answer to the question.

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Which ion can be most easily reduced cu2+ Zn2+ Ni2+ ca2+
Norma-Jean [14]
The answer is A. Cu ^2+
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Plasma occurs in electrical sparks. These sparks contain A) free protons. B) free molecules. C) ions and electrons. D) neutrons
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I looked it up and i saw tht it was ions and electrons.
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A newly discovered element, Z, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267
kirill115 [55]
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4 0
3 years ago
A solution with a volume of 1.00 l is 0.450 m in ch 3 cooh(aq) and 0.550 m in ch 3 coona(aq). what will the ph be after 0.0800 m
Semenov [28]
Before addition of HCl,

conc. of CH3COOH = 0.450 M
conc. of CH3COONa = 0.550 M

After addition of 0.08 M HCl, following reaction occurs in system:
HCl + CH3COONa ↔  CH3COOH + NaCl

Thus, in reaction system conc. of CH3COOH will increase to 0.53 M (0.08M + 0.450M)
And, conc to CH3COONa will reduce to 0.47 M (0.550M - 0.08M)

Now, conc. of H+ ions = ka \frac{[acid]}{[conjugated base]}
where ka = dissociation constant for acid = 10^-5 for Ch3COOH

∴ conc. of H+ ions = \frac{0.53}{0.47}
                              = 1.1277 x 10^-5

Now, pH = -log [H+] = -log (1.1227 x 10^-5) = 4.94
4 0
3 years ago
__________ electrons are the most important electrons to an atom.
Pie

Answer:

Valence electrons are the most important electrons to an atom.

Explanation:

They will determine many of the atoms traits since they are involved in bonding with other atoms.

7 0
4 years ago
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