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Pavlova-9 [17]
2 years ago
5

Calculate: (7.0 x 10^5) + (2.5 x 10^4) =

Chemistry
1 answer:
Serjik [45]2 years ago
8 0

Answer:

725000

Explanation:

hope you find this helpfull

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Both the freezing temperature and the melting temperature of water are the same(0°C). Explain why a substance like water freezes
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It is approximately 0. It could be barley higher or lower for both. You have to take the altitude into consideration. 
5 0
3 years ago
Robin and Alex are discussing how water molecules form when hydrogen and oxygen atoms combine. Robin writes the following chemic
anygoal [31]
I’m pretty sure it’s B
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3 years ago
List the three requirements for a correctly written chemical equation.2. Give one example of a word equation, one example of a f
erma4kov [3.2K]

Answer:

Requirements for a correctly written chemical equation are reactants and products, their formula and valency

Explanation:

Formula of the given compound are -

1 - Potassium Hydroxide - KOH

2 - Calcium Nitrate - Ca(NO_3)_2

The requirements for a correctly written chemical equation are -

  • Identifying reactants and products
  • Formula of reactants and products
  • Valency of elements

Example of word equation, formula equation, and chemical equation is as follows -

Aluminium + iron9(III)oxide ⇒ aluminium oxide + iron (word equation)

Al_(_s_)  + Fe_2O_3_(_s_)    ⇒   Al_2O_3_(_s_)  + Fe_(s) (formula equation)              

2Al_(_s_) + Fe_2O_3_(_s_)    ⇒   Al_2O_3_(_s_)   + 2Fe_(_s_) (chemical equation)

8 0
3 years ago
Which reaction can be used to make 2,3 dichloropentane?
lina2011 [118]

Answer:

B) substitution

Explanation:

2,3 dichloropentane is a hydrocarbon that contains two chlorine atoms in its chain. It has a chemical formula: C_{5} H_{10} Cl_{2}. In the compound, two hydrogen atoms has been substituted by two chlorine atoms.

A substitution reaction is a process by which an atom of a compound is being replaced by another atom to form a new compound due to a chemical reaction. This is one of the general properties of alkanes.

4 0
3 years ago
Imagine that instead of balls, you were rolling positively charged ions of the same element).
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The ion with a +3 charge would be deflected the most by the magnet because it has the strongest positive charge therefore it will be the one being the most repelled. and the ion that would be deflected the least would be the ion with a +1 charge because it has the least amount of charge so the magnet will still repel it but just not as much as it will repel the ion with a +3 charge.

hope that helps
8 0
2 years ago
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