What metal forms an ionic compound with nitrogen with the general formula X3N?
Answers
Answer:
B. Lithium (Li)
Explanation:
Lithium forms an ionic compound with nitrogen with the general formula X₃N. When lithium and nitrogen react, they form a nitride called lithium nitride.
The Lithium nitride is actually prepared by the direct combination of elemental lithium with nitrogen gas. Below is the reaction equation:
6Li + N₂ → 2Li₃N
The reaction can occur when a solution of lithium in liquid sodium metal is treated with N₂. When the Lithium nitride reacts with water, it does that violently and produces ammonia.
Related Questions
The most common fuel for nuclear fission reactors is:a) coal b) krypton c) uranium-235 d) none of the above
How many atoms of carbon are in 24 grams of carbon?a) 1.2 x 10²⁴ atoms b) 1.7 x 10²⁶ atoms c) 1.2 x 10²⁵ atoms d) 3.0 x 10²⁴ atoms e) 3.0 x 10²³ atoms Can anyone explain this one?
Which answer best describes the potential energy diagram for a reaction that takes place in water, if the temperature of the surrounding water is lowered? a. the potential energy of the reactants is low; the potential energy increases gradually; it peaks, then decreases slightly. b.the potential energy of the reactants is high; the potential energy decreases gradually; then increases slightly. c. the potential energy of the reactants is low; the potential energy remains low; rapidly peaks, then rapidly falls. d. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.
What is the name of cells that have the ability to develop into differentkinds of cells?
Answers
Explanation:
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An Arrhenius acid is a substance that, when dissolved, forms stainless hydrogen (H +)
An Arrhenius base is a substance that when dissolved produces oxhydryl ions (OH-).
For example:
hydrochloric acid: HCl
Nitric Acid: HNO3
Final answer:
An Arrhenius acid is a substance that releases hydrogen ions when dissolved in water. Examples can range from strong acids, like hydrochloric acid, to weak acids like vinegar. The concept was formulated by Svante Arrhenius, underlining the importance of hydrogen in the definition of acids.
Explanation:
An Arrhenius acid is specifically defined as a substance which, when dissolved in water, releases hydrogen ions (or protons). This includes strong acids like hydrochloric acid (HCl), which releases all of their hydrogen ions in solution, thereby becoming completely ionized. However, this also includes weak acids like vinegar, or acetic acid, which do not ionize completely and still leave some hydrogen ions within the compound.
These properties of acids were formulated by Svante Arrhenius in the late 19th century, underlining the importance of hydrogen in defining acids. The ability of acids to release hydrogen cations led to their definition as acid substances.
Thus, if a substance releases hydrogen ions into a solution when dissolved in water, it can be described as an Arrhenius acid.
Learn more about Arrhenius acid here:
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The length measurement in kilometers will be -
92.25 x 10⁻³ Kilometers.
We have length measurement of 92.25 m.
We have to determine the number of kilometers in this much length.
How many maters are there in one kilometer ?
In 1 km there are 1000m
According to the question -
Length measurement = L = 1 meter
In kilometers, the length will be = 1 /1000 x 92.25 =
92.25 x 10⁻³ Kilometers.
Therefore, the length measurement in kilometers will be -
92.25 x 10⁻³ Kilometers.
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92.25m= ?
We cross multiply
92.25/1000
= 0.09225
Therefore, 92.25m = 0.09225km
Answers
Answer:
B. adding a hydroxyl group C. adding a carboxyl group
Explanation:
Solubility in water is due to the polar interactions or the hydrogen bonding.
Methyl group and benzene ring are both polar and hydrophobic in nature and thus will not improve water solubility.
Increasing size of drug will make more insoluble as more size of the solute is being added.
Adding hydroxyl or carboxyl group can improve water solubility as both the groups are highly hydrophilic and polar. These groups can form hydrogen bond with the water molecules and make drug more soluble in the water.
Answers
Answer is: A. test and determine the pH values of unknown solutions.
Acid-base indicators are usually weak acids or bases and they are chemical detectors for hydrogen or hydronium cations (pH or pOH values).
Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄). Phenolphthalein is colorless in acidic solutions and pink in basic solutions.
Another example is methyl orange. It is red colour in acidic solutions and yellow colour in basic solutions.
Answer: The correct answer is option A.
Explanation:
An indicator is a substance which changes color to show any chemical change happening in the reaction. It gives the visible sign of any change.
Hence, main role of indicators from the given options is to determine the pH values of unknown solutions.
pH is the scale which shows the acidity and basicity of the solutions. It is the negative logarithmic value of hydrogen ion concentration of the solution. More the hydrogen ion concentration, less will be the pH and more acidic will be the solution.
The scale ranges from 0 to 14.
The value ranging from 0 to 6.9 are acidic solutions.
The value ranging from 7.1 to 14 are basic solutions.
The value having pH = 7 is neutral solution.
Indicator used to determine the pH of the solution is pH-paper which is shown in the image.
(2) spiral path traveled by an electron toward the nucleus
(3) region of the most probable proton location
(4) region of the most probable electron location
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Answer : Option 4) Region of the most probable electron location.
Explanation : As per the electron cloud model of the atom, an orbital is a region where the probability of finding an electron is highest. According to this model which was used to identify the probable location of the electrons when they go around the nucleus of an atom.
This electron cloud model was different from the older Bohr atomic model by Niels Bohr.