Answer:
NiBr₃ + Al₂S₃ ⇒ NiS₃ + Al₂Br₃
Explanation:
A double replacement reaction is a reaction in which the cations switch anions.
In the reaction, the two cations are Al and Ni. The cations are Br and S.
Put each cation with the opposite anion: Ni with S and Al with Br.
The products would be NiS₃ and Al₂Br₃.
The full reaction is NiBr₃ + Al₂S₃ ⇒ NiS₃ + Al₂Br₃.
Hope that helps.
Answer:
The letters are a one- or two-letter symbol assigned to each. element. ... The letters represent the name of the element when it was. discovered
Explanation:
What do the letters in the boxes of the periodic table represent?
A. The letters stand for the names commonly used for the elements.
O
C. The letters are an abbreviation of the element's name in English.
O
n chemistry, a symbol is an abbreviation for a chemical element. Symbols for chemical elements normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.
Earlier symbols for chemical elements stem from classical Latin and Greek vocabulary. For some elements, this is because the material was known in ancient times, while for others, the name is a more recent invention. For example, Pb is the symbol for lead (plumbum in Latin); Hg is the symbol for mercury (hydrargyrum in Greek); and He is the symbol for helium (a new Latin name) because helium was not known in ancient Roman times. Some symbols come from other sources, like W for tungsten (Wolfram in German) which was not known in Roman times.d
Answer:
C. 100
Explanation:
Biochemical researches and studies have found out that an average health hotdog has a calorie of between 100 and 150 which is usually dependent on the additives.
Since the nutrition label on the back of a package of hotdogs (purchased within the US) indicates that one hotdog contains 100 calories then it truly contains such amount of calories. The standard number of calories present in a hotdog is independent of the amount eaten by individuals.
Their positive charge is located in a small region that is called the nucleus.
Explanation:
Ernest Rutherford in his gold foil experiment was able to demonstrate that the nucleus is made up of positive charges which occupies a small and tiny nucleus.
Rutherford bombarded a thin gold foil with alpha particles from a radioactive source.
- He observed that all the particles passed through but a small portion was deflected back.
- This led to his proposition of the nuclear model the atom.
learn more:
Ernest Rutherford brainly.com/question/1859083
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Bonds formed between atoms can be classified as ionic and covalent
Ionic bonds are formed between atoms that have a high difference in the electronegativity values.
In contrast, bonds formed between atoms that have a difference in electronegativity lower than the ionic counterparts are polar covalent bonds. If the atoms have very similar electronegativities, they form non-polar covalent bonds.
In H2S, the S atom is bonded to 2 H atoms. The electronegativity of H = 2.2 and S= 2.56. Since the difference is not high the bond formed will be covalent (polar covalent).
