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kari74 [83]
3 years ago
7

1

Chemistry
1 answer:
kiruha [24]3 years ago
4 0
You can conclude that your substance is a solid because of the slow moving particles and their being little space for those particles to be moving around.
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How many valence electrons are contained in N, O, and F, respectively? 5, 6, 7 7, 8, 9 3, 2, 1 14, 15, 18
trapecia [35]
Nitogen - 5
Oxygen - 6
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7 0
3 years ago
Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions:
cupoosta [38]
MgO
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4 0
3 years ago
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It is possible for a particular element to have various numbers of neutrons. True False
umka2103 [35]

Answer:

  • <em><u>True</u></em>

Explanation:

Every element is constituted by atoms with the same atomic number, which is the number of protons in their nuclei. So, all the atoms of a same element have the same number of protons.

For instance, the element sodium has atomic number 11, and all its atoms have 11 protons.

The atomic number identifies uniquely every element.

In the atomic nuclei there are protons and neutrons. Neutrons can vary from one atom of a particular element to another atom of the same element. That is what the term isotope accounts for. Isotopes are atoms with the same atomic number and different number of neutrons.

Most elements have different isotopes. The atomic mass of fifferent isotopes of a particular element will differ among them, because the neutrons account for the mass.

7 0
3 years ago
Pls help! I don’t have time I have an exam really soon
sergiy2304 [10]
1.) Machines, which separate by shape, remove barley, oats and small seeds. Gravity separation removes stones and, throughout the cleaning process, air currents lift off dust and chaff.




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5 0
3 years ago
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If a body were a car glucose would be?
Elden [556K]
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