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xeze [42]
3 years ago
11

Balanced equation including phases for the reaction of hydroiodic acid and lithium hydrosulfite

Chemistry
1 answer:
leva [86]3 years ago
3 0
And so what are you trying to ask or are you making a statement??????????????!☺☺☺
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Which element has 13 protons and 8 neutrons?
WINSTONCH [101]

Answer:

only thing close I can see would be aluminun

Explanation:

atomic number of 13 and 8 2nd electrons in its shell.

5 0
3 years ago
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Which of the following is the correct formula for Ca2+ reacting with NO2??
mariarad [96]

Answer:

B. Ca(NO2)2

Explanation:

Ions (charged atoms) combine with one another to form stable ionic compounds. In this case, calicium ion (Ca2+) is said to react with NO2, which has a charge of -1 i.e. +1-1(2) = 1-2 = -1.

This means that calcium has a charge of +2 while nitrite ion has charge of -1, hence, when they combine, they exchange their charges, which become their subscript as follows:

Ca2+ + NO2- → Ca(NO2)2

Ca(NO2)2 is a stable ionic compound called calcium nitrite. Notice that it takes two atoms of NO2- to react with one atom of Ca2+.

5 0
3 years ago
Which of these molecular electron configurations describe an excited state?
kherson [118]
<span>We have ground strate configurations of electrons,if electrons are filled in order of increasing energy. When there are electrons are in higher orbitals, we have an atom in an excited state. B, and C are excited states. In B, 2 electrons can fit in the 4s orbital, and that should fill fully before the 4p orbitals. In C, the same is true for 5s and 5p In D, this is not an excited state because 4s fills before 3d</span>
4 0
3 years ago
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How can naphthalene be separated from a mixture of kbr and sand?
Dmitriy789 [7]

Put it in a beaker. Use a smaller beaker filled half way with ice and water and place in the larger one. It should be about an inch or two above the mixture. Heat over a Bunsen burner and the naphthalene will deposit on the bottom of smaller beaker.

And in this way, nephthalene be separated from the mixture of KBR and sand.

7 0
3 years ago
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An atom has 5 protons and 7 neutrons. What is its mass number?
lisabon 2012 [21]
Mass number = protons + neutrons
mass number = 5 + 7
mass number = 12
3 0
3 years ago
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