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Alekssandra [29.7K]
3 years ago
15

What ion will be formed by the selenium atom shown below when it has a stable set of valence electrons?

Chemistry
1 answer:
irina1246 [14]3 years ago
6 0
What ion will be formed by the selenium atom shown below when it has a stable set of valence electrons?Selenium atom

D. Se2-


Which of the following is the best description of how electrons are transferred in an ionic bond?

A. A metal atom loses electrons and a nonmetal atom gains electrons.

A user is constructing an ionic bond between beryllium and chlorine and has reached the stage below. What should the user do next?
Beryllium and chlorine

A. Transfer an electron from the beryllium atom to the chlorine atom.


Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

B. 2

Lithium nitride has the chemical formula Li3N. Rubidium is in the same chemical family as lithium. What is the formula of rubidium nitride?

C. Rb3N

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What is the molarity of a solution containing 18.2 g of KCl in 215 mL of KCl solution?
bulgar [2K]

Answer:

The sum would be 69109.4944 ml if that's what you were asking

3 0
3 years ago
2Na+2HCI-H,+2Naci
White raven [17]

Answer:

Single Replacement reaction

Explanation:

Reaction Given:

            2Na + 2HCI ------> H₂ + 2NaCl

Type of reaction = ?

Solution:

Look at the reactants and products of the reaction to know the type of reaction

           2Na + 2HCI ------> H₂ + 2NaCl

In this reaction two reactant combine and give 2 products.

Reactant of the reaction

Na = Sodium

HCl = Hydrochloric acid

Product of the reaction

NaCl = sodium chloride

H₂ = hydrogen gas

So,

That sodium metal react with hydrochloric acid and produce salt and water gas

Type of Reaction:

This is a Single Replacement reaction, in which Sodium metal (Na) replace the Hydrogen (H) of the other compound and form Sodium Chloride salt (NaCl)  and hydrogen liberate in the form of gas.

5 0
3 years ago
An aluminum can weighing 10 g absorbs 106.8 J of heat and warms by 12 degrees C. What is the specific heat of the aluminum can?
Sladkaya [172]

Answer:

c_{Al} = 0.89\,\frac{J}{kg\cdot ^{\circ}C}

Explanation:

The heating process is modelled after the First Law of Thermodynamics:

Q = m \cdot c_{Al}\cdot \Delta T

The specific heat of the aluminium can is:

c_{Al} = \frac{Q}{m\cdot \Delta T}

c_{Al} = \frac{106.8\,J}{(10\,g)\cdot (12^{\circ}C)}

c_{Al} = 0.89\,\frac{J}{kg\cdot ^{\circ}C}

8 0
3 years ago
The smallest particle of a covalently bonded compound is a(n) ________.
vazorg [7]
The smallest particle of a covalently bonded compound is an atom.
8 0
3 years ago
Read 2 more answers
Write a nuclear equation for the beta decay of Promethium-165
padilas [110]

Answer:

see your answer in pic

Explanation:

4 0
3 years ago
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