The compound with the chemical formula (NH4)2S is ammonium sulfide. This name signifies the presence of two ammonium ions and a single sulfide ion in the compound.
The compound with the chemical formula (NH4)2S is ammonium sulfide. In this compound, there are two ammonium ions (NH4) for every sulfide ion (S2-). The positive charge of the two ammonium ions balances the negative charge of the sulfide ion, forming a neutral compound. The prefixes and suffixes in the name of the compound indicate the elements present and their ratios.
#SPJ6
The changes shown are physicalchanges because when ice melts, it turns from solid to liquid.
Physical changes are when a substance changes in how it looks or acts without turning into something else. These changes can usually be undone, which means the substance can be brought back to how it was before.
When ice melts, it turns from solid to liquid. The tiny particles in the ice move around, but the stuff that makes up water stays the same. The process can go backwards, because the water that is a liquid can be turned back into ice.
When water gets really hot, it turns into gas called steam. The water molecules get enough energy to separate from each other and become vapor. Once again, the stuff that makes up water stays the same, and when steam cools down, it turns back into liquid water.
Learn more on physical changes on brainly.com/question/960225
#SPJ3
Answer:
Because physical change are reversible change. we can reverse into the orginal effect.
please mark me as a brainlist..
b.a nitrogen-nitrogen single bond
c.each nitrogen has one nonbinding electron pair
d.each nitrogen has two nonbinding electron pairs
e.each hydrogen has one nonbonding electron pair
The lewis structure of n2h2 shows
c. each nitrogen has one nonbinding electron pair
Lewis structures are diagrams that show the bonds between the atoms of a molecule and the lone pair of electrons that might exist in a molecule.
Lewis structures can be drawn for each covalently bonded molecule, as well as coordination compounds. The Lewis structure is named after Gilbert N. Lewis, who introduced in his 1916 article The Atom and the Molecule. The Lewis structure extends the concept of the electron point diagram by adding lines between atoms to represent pairs together in chemical bonds.
The Lewis structure shows each atom and its position in the molecular structure using its chemical symbol. Lines are drawn between atoms that are bound to one another (pairs of dots can be used instead of lines). The excess electrons that make up lonely pairs are represented as pairs of points and are placed next to the atom.
The number of electrons represented in the Lewis structure is equal to the number of valence electrons in each atom. Non-valence electrons are not represented in the Lewis structure.
In the case of Lewis structures, formal charges are used in the description, comparison, and assessment of the topological and resonant structures that might occur by determining the apparent electron charge of each atom, based on the structure of the electron points, assuming exclusive covalence or non-polar bonds. Formal charges have been used in determining possible electron reconfigurations when referring to reaction mechanisms, and often produce the same sign as the partial charge of atoms, with the exception.
Learn More
Lewis structures brainly.com/question/9736616
Atom/Electron brainly.com/question/9736616
Details
Class: High School
Subject: Chemistry
Keyword: lewis, Structure, electron
B. lower than 7 is considered basic.
C. higher than 7 is considered an acid.
D. of 6 is considered neutral.
Answer:
close to 14 is considered a strong base.
Explanation:
Answer:
engineering
Explanation:
when you think about the advancements in engineering over the years vs the advancements in science, engineering fits the "fast, better, cheaper" a lot more. Cars, for example, are engineered and over the years cars have been getting faster, more reliable/safe, and more affordable.
Science can also be focused on being better/more reliable/efficient, but this is mainly for things like medicine, and not science as a whole. How can "faster, better, cheaper" apply to a biologist, who studies nature?