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HACTEHA [7]
3 years ago
5

Help mee please (I will give the person who answers this a brainlist)

Chemistry
2 answers:
Leokris [45]3 years ago
7 0
2 5 3 4 1 is the answers
Angelina_Jolie [31]3 years ago
5 0
Displacement is changing location
position is location
motion is your total motion no matter what direction your moving
reference point is how far you are from where you started
distance is using a object to compare your location
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1A: Consider these compounds:
Setler [38]

Solution :

Compound                      Ksp

$PbF_2$                               $3.3 \times 10^{-8}$

$Ni(CN)_2$                        $3 \times 10^{-23}$

FeS                                $8 \times 10^{-19}$

$CaSO_4$                           $4.93 \times 10^{-5}$

$Mg(OH)_2$                      $5.61 \times 10^{-12}$

Ksp of $Ni(CN)_2 and both compounds dissociate the same way. Hence $Mg(OH)_2$ is more soluble than $(B). \  Ni(CN)_2$

$Mg(OH)_2$  is less soluble than $(A). \ \ PbF_2 \ ()Ksp \  PbF_2 > Ksp \ \text{ of } \ Mg(OH)_2$

It is not possible to determine CD - $FeS \text{ or} \ CaSO_4$  is more or less soluble than $Mg(OH)_2$  as though they have a different Ksp values their molecular dissociation is also different and they may have a close solubility values.

$Ni(OH)_2$  can be directly compared with PbS, $AlPO_4, MnS$

$\text{For } \ Ni(OH)_2$

$AB_2(s) \rightarrow A^{2+} + 2B^{-}$

$Ni(OH)_2(s) \rightarrow Ni^{2+} + 2OH^-$

100

1-s s 2s

Ksp = [A2+][B-]^2 = s \times (2s)^2 = 4s^3

Hence they can be directly compared by Ksp values, smaller the Ksp, smaller the solubility.

For Silver Chloride

$AB(s) \rightarrow A^{x+}+B^{x-}$

$AgCl(s) \rightarrow Ag^+ + Cl^-$

1 0 0

1 - s s s

Ksp $=[A^{x+}][B^{x-}]=s \times s = s^2$

Hence, they can be directly compared by Ksp values, smaller the Ksp, smaller the solubility.

4 0
3 years ago
The image below shows a laser that has been shot into a solid block of transparent plastic from the far left end. Once inside th
OlgaM077 [116]

Answer:

A. Optical fibers transmit light signals in high-speed communications.  

Explanation:

You didn't include the image, but it probably showed light bouncing off the sides as in the diagram below.

It demonstrates how optical fibers transmit light signals in high-speed communications.

B is wrong. Satellites communicate by radio waves.

C is wrong. Solar cells convert light energy to  

D is wrong. Power plants transmit electrical energy to homes through copper wires.

7 0
3 years ago
Cobalt-59 is a stable isotope and cobalt-60 is an unstable or radioactive isotope. These two isotopes differ in the number of -
pogonyaev
Cobalt-59 and Cobalt-60 differ in that they have different mass number which means they have different number of neutrons. Isotopes are atoms of the same element with similar atomic number but different mass number. Cobalt-60, has a number of uses, which includes, being used to irradiate food sources as a method of preserving food, used in industrial radiography to detect structural flaws in metal parts among other uses. 
7 0
3 years ago
42.7 L to mililiters
marin [14]
42700 milliliters would be the answer...

Hope this helps!
3 0
3 years ago
Helppppppppppppppppppppppppp
Anestetic [448]

intrusive

intrusive rocks have larger crystals

7 0
3 years ago
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