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olga nikolaevna [1]
3 years ago
6

PLEASE HELP MEEEEEEEEEEEEEEEEEEE

Chemistry
2 answers:
qwelly [4]3 years ago
8 0
I think the answer is c
andriy [413]3 years ago
5 0
Silicon (Si). This is too reactive to be found in nature and is the most reactive in the list, followed by Chlorine (Cl), then Argon (Ar) then Helium (He) 
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5HCl what are the number of elements that 5HCl has ?
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Answer:

Penta hydrogen chlorine

Explanation:

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6 0
3 years ago
(1) In an experiment for determining the density of water, the following results
Angelina_Jolie [31]

Given parameters:

mass of an empty beaker = 65gm

mass of the beaker and water = 165gm

volume of water = 100cm³

Unknown:

Density of water  = ?

Solution:

Density is the mass per unit volume of a substance;

           Density  = \frac{mass}{volume}

To find the mass of the water ;

   Mass of water  = Mass of beaker and water - mass of an empty beaker

                            = 165g - 65g

                           = 100g

So input parameters and solve;

         Density  =  \frac{100g}{100cm^{3} }  

         Density of the water in the beaker  = 1g/cm³

4 0
4 years ago
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Aleksandr [31]

Answer:

A: Endoplasmic reticulum

B: Chroloplast

C: Mitochondrion

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Explanation:

8 0
3 years ago
Substance B was heated at first gently and then more strongly in a bunsen flame. Two gases were given off, one of them brown. A
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lolllllllllllllllllllllll

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Hlo good evening everyone​
goblinko [34]

Answer:

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4 0
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Read 2 more answers
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