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Nataly [62]
2 years ago
6

Porcentaje en masa formula y unidad​

Chemistry
1 answer:
elena-14-01-66 [18.8K]2 years ago
6 0

Explanation:

Expresa los gramos de soluto por cada 100 gramos de disolución. Porcentaje masa = masa de soluto___ x 100 masa de la disolución Cuando trabajamos con la masa, podemos sumar el soluto y el disolvente para obtener la disolución.

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What determines the strength of a dipole-dipole force?
7nadin3 [17]

Answer:

hope this helps you :)

Explanation:

Dipole-dipole forces occur between molecules with permanent dipoles (i.e., polar molecules). For molecules of similar size and mass, the strength of these forces increases with increasing polarity. Polar molecules can also induce dipoles in nonpolar molecules, resulting in dipole-induced dipole forces.

3 0
3 years ago
What element breaks down into yttrium-90?
atroni [7]

The correct answer is Strontium-90.

Strontium-90 breaks down into yttrium-90.

Strontium-90  is a radioactive isotope of strontium. It undergoes β− decay into yttrium-90. A decay energy of 0.546 MeV is also released.

⁹⁰₃₈Sr   -> ⁰₋₁e + ⁹⁰₃₉Yr

Beta particle has the charge and mass of an electron. Upon the release of a beta particle, the mass number of Sr remains unchanged but the atomic number of Sr increases by 1. As a result both Sr and Yt have mass number 90, however, Sr and Yt have atomic numbers 38 and 39 respectively.

8 0
3 years ago
Describe, in detail, nuclear fission and nuclear fusion. Include what happens in each reaction, the types of atoms involved, the
amm1812

Nuclear Fusion is when two atoms (usually Hydrogen and helium because they are very light and abundant) are smashed together to form heavier elements and in the process releases massive amounts of energy. Nuclear Fission on the other hand is when a heavier atom is split apart at the nucleus and releases large amounts of energy and free neutrons and photons. (in the form of gamma rays)

5 0
3 years ago
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What quantity in moles of LiBr are in 66.1 grams of LiBr?
anygoal [31]

Molar mass of LiBr

  • 7+80=87g/mol

\\ \sf\hookrightarrow No\:of\;moles=\dfrac{Given\:mass}{Molar\:mass}

\\ \sf\hookrightarrow No\:of\:moles=\dfrac{66.1}{87}

\\ \sf\hookrightarrow No\:of\:moles=0.75mol

5 0
1 year ago
Can someone help me out? can't seem to chose between A or D
Stolb23 [73]
It definitely isn't c so I think u should go with choice a
8 0
2 years ago
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