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Colt1911 [192]
3 years ago
14

What causes a blue block to appear blue in the sunlight?

Chemistry
1 answer:
Vitek1552 [10]3 years ago
3 0

Answer:

sadgsddagd

Explanation:

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Please help me with chemistry!! with explanation so i can understand and further the knowledge
iren [92.7K]
Density= mass/volume aluminum can= 174 •g/ 4 • cm ^3. =2.76•g•cm ^-3
6 0
3 years ago
1. empirical formula for Cu2o4?
Wittaler [7]

We know that

1) empirical formula of a compound is the representation of a molecules with the elements in simplest mole ratio.

2) the molar mass is the actual proportion of moles of elements present in a molecule

3) there is a simple ratio between the molar mass and empirical mass a molecule

Now let us solve each problem

1) empirical formula of Cu_{2}O_{4} will be CuO_{2}

2) empirical formula of Zn_{3}(NO_{3})_{4} will be Zn_{3}(NO_{3})_{4}

3) empirical formula of Ti_{2}S_{2.5} will be Ti_{4}S_{5}

4) the molecular formula will be :

Ratio=\frac{molarmass}{empiricalformula}=\frac{112.04}{28.01}=4

the molecular formula = 4 X empirical formula = 4 X CO = C_{4}O_{4}

5) the mole ratio of Cl and Cr is \frac{1.90}{0.631}=3

empirical formula will be CrCl_{3}

6 0
3 years ago
How are ionic bonds formed?
lisov135 [29]

Answer:

D

Explanation:

It occurs when the outermost electrons are permanently transferred to another atom.

7 0
3 years ago
Pcl5 exist but ncl5 does not.why?
jeyben [28]
N is as electronegative as Cl is. So Cl doesnt react with O, N
6 0
3 years ago
Mr. Stein builds a model of a molecule out of wooden beads and pegs. He uses the model to explain the shape of the molecule. Mr.
ZanzabumX [31]

Answer:

A

Explanation: The real molecule is too small so had to build a model to make it viewable

5 0
3 years ago
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