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4 years ago

Can someone help me with the question in the image? if it is correct i will mark as brainliest

Chemistry

1 answer:

Debora [2.8K]4 years ago

5 0

Answer:

I would think the correct answer would be B and D.

Explanation:

The information the institutions gathered doesn't tell whether the temperature increased or decreased so it couldn't be A. And the data that is gathered by each institute is similar to one another, so it couldn't be C. Therefore, you're left with B and D.

I hope this helps!

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What is the scientific method _ and _

Anettt [7]

A Method of procedure that has characterized natural science in include systematic observation, measurement, and experiment
it also include the formation, testing, and modification of hypothesis

i hope it helps out

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3 years ago

What separation method collects vapor

NeTakaya

Answer:

evaporation and distilation

Explanation:

3 0

3 years ago

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Enter your answer in the provided box. To draw a Lewis structure, first add the number of outer (valence) electrons contributed

DIA [1.3K]

Answer:

14 is this value for a molecule of $CH_3Cl$ .

Explanation:

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

Number of total outer valence electrons is carbon = 4

Number of total outer valence electrons is hydrogen = 1

Number of total outer valence electrons is chlorine = 7

For total number of outer electrons is $CH_3Cl$

$=1\times 4+3\times 1+1\times 7=14$

14 is this value for a molecule of $CH_3Cl$ .

4 0

3 years ago

In some places there are deep cracks in earths crust called

Leona [35]

I think they are called Faults.

7 0

3 years ago

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Silver metal is expensive and should always be recycled. If your lab has 0.500 L of silver nitrate solution (2 .00 mol* L^ -1 )

Paladinen [302]

Mass of Copper : 63.5 g

<h3>Further explanation</h3>

Given

Reaction

Cu(s)+2AgNO₃ (aq) ⇒Cu(NO₃)₂ (aq)+2Ag(s)

Required

Mass of Copper

Solution

mol of Silver nitrate :

= M x V

= 2 mol/L x 0.5 L

= 1

From the equation, mol ratio of Cu : AgNO₃ = 1 : 2, so mol Cu = 1

Mass of Cu(Ar=63.5 g/mol) :

= mol x Ar

= 1 x 63.5

= 63.5 g

5 0

3 years ago