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eimsori [14]
2 years ago
13

Please help me with chemistry!! with explanation so i can understand and further the knowledge

Chemistry
1 answer:
iren [92.7K]2 years ago
6 0
Density= mass/volume aluminum can= 174 •g/ 4 • cm ^3. =2.76•g•cm ^-3
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According to Hess’s law, if a series of intermediate reactions are combined, the enthalpy change of the overall reaction is
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I think the answer is B. the sum of the enthalpy changes of the intermidiate reactions
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How to calculate the frequency of an ion
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solution:

You need to find the frequency, and they have already given you the wavelength. And since you already know the speed of light, you can use formula (2) to answer this problem. Remember to convert the nano meters to meters because the speed of light is in meters. (1 nm = 1.0 x 10^{-9} m)

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3 years ago
Describe the characteristics of the moon and the Earth for each phase of the
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Before we describe the phases of the Moon, let's describe what they're not. Some people mistakenly believe the phases come from Earth's shadow cast on the Moon. Others think that the Moon changes shape due to clouds. These are common misconceptions, but they're not true. Instead, the Moon's phase depends only on its position relative to Earth and the Sun.

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3 years ago
HELP ASAP !!!!!!Can someone tell me easy one line definitions of atomic number, mass number, and isotopes
rusak2 [61]

Answer:

Fundamental properties of atoms including atomic number and atomic mass. The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.

Explanation:

Fundamental properties of atoms including atomic number and atomic mass. The atomic number is the number of protons in an atom, and isotopes have the same atomic number but differ in the number of neutrons.

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Snezhnost [94]

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