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denis23 [38]
3 years ago
9

Isotopes are atoms with the SAME number of protons, but DIFFERENT numbers of neutrons. Question 8 options: True False

Chemistry
1 answer:
maxonik [38]3 years ago
5 0

Answer: The correct answer would be : True

I hope that this helps you !

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Question 4 Solve and report to correct number of significant figure 2.375 + 4.5​
DiKsa [7]

Answer:

6.9 (two sig figs)

Explanation:

2.375 + 4.5 = 6.875 = 6.9

When adding or subtracting, sig figs are determined by the least number of digits past the decimal point.

8 0
3 years ago
Helpppppppppppppppp?
Ivenika [448]

Answer: A

Explanation:

6 0
3 years ago
An isotope of carbon has 8 neutrons. What is the correct hyphenated symbol for this isotope?
Rom4ik [11]

Answer:

Carbon-14 or C-14

Explanation:

Since the isotope is a carbon isotope, it means the the atomic number of the isotope is 6.

The atomic number of an element is the proton number.

Therefore, the isotope has a proton number of 6

Now we need to obtain the mass number of isotope in order to write the symbol of the isotope. This is illustrated below:

Mass number = Proton +Neutron

Proton = 6

Neutron = 8

Mass number = 6 + 8

Mass number = 14

Therefore, the symbol of the isotope is carbon-14 or C-14

4 0
4 years ago
This is an riddle.
Lostsunrise [7]

Answer: The answer is Iceberg

7 0
3 years ago
Read 2 more answers
Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt
Jet001 [13]

Answer:  2.00 V

Explanation:

The balanced redox reaction is:

2Al+3Cu^{2+}\rightarrow 2Al^{3+}+3Cu

Here Al undergoes oxidation by loss of electrons, thus act as anode. Copper undergoes reduction by gain of electrons and thus act as cathode.

E^0=E^0_{cathode}- E^0_{anode}

Where both E^0 are standard reduction potentials.

Al^{3+}+3e^-\rightarrow Al E^0_{[Al^{3+}/Al]}=-1.66V

Cu^{2+}+2e^-\rightarrow Cu E^0_{[Cu^{2+}/Cu]}=0.340V

E^0=E^0_{[Cu^{2+}/Cu]}- E^0_{[Al^{3+}/Al]}

E^0=+0.34- (-1.66V)=2.00V

Thus the standard cell potential is 2.00 V

6 0
3 years ago
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