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notka56 [123]
3 years ago
9

The Law of Superposition states

Chemistry
1 answer:
lora16 [44]3 years ago
8 0
In an undisturbed sequence of layers of rocks, the younger layers lie on top of the older layers
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Half-reactions can be written to represent all
kobusy [5.1K]
Answer=4

<span>oxidation and reduction reactions
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3 years ago
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A 0.9182 g sample of CaBr2 is dissolved in enough water to give 500 ml of solution. what is the calcium ion concentration in thi
Nataly_w [17]

First calculate the number of moles of CaBr2 given the molar mass of 199.89 g/mol.

moles CaBr2 = 0.9182 g / (199.89 g / mol) = 4.60 x 10^-3 mol

 

We see that each CaBr2 contains only 1 mole of Ca, so the moles of Ca is also:

moles Ca+ = 4.60 x 10^-3 mol

 

So the molarity of this is:

Molarity Ca+ = 4.60 x 10^-3 mol / 0.500 L

<span>Molarity Ca+ = 9.19 x 10^-3 M</span>

5 0
3 years ago
Although objects can go through physical and changes, the amount of matter in those objects remains the same. This is known as t
Liula [17]
The question above is incomplete, the options attached tot he question are given below:
A. A structure made of building blocks.

 The blocks of the same structure bundled in a pile.

B.  A snowman.

 The melted remains of the same snowman.

C. A lump of clay.

The same lump broken into three pieces.

D. 1 cup of water and one gram of salt, separated.

 The same cup of water with one gram of salt mixed in.

E. One apple.

 The same apple cut into slices.

ANSWER:

The correct options are these:

B. A Snowman and the melted remain of the same snowman.

C. Lump of clay and the same clay broken into three pieces.

E. One apple and the same apple cut into slices.

For all the three answers listed above, the mass of the pairs will remain the same because nothing has been taken out of them and nothing is added to them, they were just changed from one form to another. The other options are wrong because, something got added to the original material. 

 

 


4 0
3 years ago
Complete the following analogy:
Citrus2011 [14]
The answer of the question is C. Magnetic fields
7 0
3 years ago
Plz help me and I promise I will make you he brainiest
a_sh-v [17]

Answer:

2

Explanation:

1 is definitely wrong

density must be lower to atop another liquid

in 3 ,I consider the example of water and oil whi has a lower boiling point

6 0
3 years ago
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