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avanturin [10]
2 years ago
13

Evaluate the following conversion. Will the answer be correct? Explain. If incorrect, how could you adjust one of the factors to

arrive at a rate?
rate=75 m1 s×60 s1 min×1 h60 m
Chemistry
1 answer:
elena55 [62]2 years ago
6 0

Given :

Rate = 75 m 1 s×60 s 1 min×1 h 60 m.

To Find :

Correct answer after conversion.

Solution :

We know, 1 min = 60 sec.

1 hour = 60 min = 60×60 sec = 3600 sec.

Putting value of min and hour in seconds , we get :

R=((75\times 60) + 1 )\times ( (60 + 1)\times 60 ) \times ( 3600+3600)\ s^3\\\\R=1.186\times 10^{11} \ s^3

Hence, this is the required solution.

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How many valence electrons are in chlorodifluoromethane
Elis [28]
<span>Well... first, let's recognize that the chemical formula for chlorodifluoromethane is CHClF2. Count out how many valence electrons there are. C = 4, H = 1, Cl = 7, F (X2) = 14. Total is 26. Let's put C as the central atom, and put the other elements surrounding it. Draw a pair of electrons beach each element and the central atom. Then fill the halogen elements with 3 pairs of electrons each to fill their octets. Count out how many dots you have. There should be 26, making this the correct lewis structure! Remember, hydrogen doesn't have a full octet, only a maximum of two electrons.</span>
7 0
2 years ago
In which of the following aqueous solutions would you expect AgI to have the highest solubility? In which of the following aqueo
telo118 [61]

Answer:

Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a given temperature. Such a solution is called saturated,it is calculated by dividing the mass of the compound by mass of the solvent then multiply by the molar concentration.

molar mass of solvent (Agl)= 107.8682 + 126.90447 = 234.77267g/mol

For 0.038M of Nal

molar mass of Nal compound= 22.99 + 126.90447 = 149.89447g/mol

solubility = [ 149.89447 / 234.77267] * 0.038 = 0.024

For 0.05M of AgNO3

molar mass of AgNO3 compound = 107.8682 + 14.01 + 3(16) = 169.8782g/mol

solubility = [169.8782 / 234.77267] * 0.05 = 0.036

For 0.025M of KI

molar mass of KI compound = 39.0983 + 253.8089 = 292.9072g/mol

solublity = [292.9072 / 234.77267] * 0.025 = 0.031

For 0.0125M of Lil

molar mass of Lil compound = 6.941 + 253.8089 = 260.7499g/mol

solubility = [260.7499 / 234.77267] * 0.0125 = 0.014

Therefore the solution with the highest solubility is 0.05M of AgNO3

5 0
2 years ago
Molar solubility of CuBr Ksp = 6.3 x 10-9
maksim [4K]
First, lets write the equation: CuBr--> Cu+2 + Br-
then, write the Ksp expression: Ksp= [Cu+2] [Br-]= 6.3 x 10-9
We let x be the concentration of Ksp that dissolved. Ksp= (x) (x)= 6.3 x 10-9.
Now we solve for x

X^2= 6.3x10-9
x= square root(6.3x10-9)
x= 7.94x10-5
6 0
2 years ago
. An aqueous solution ‘A’ turns phenolphthalein solution pink. On addition of an aqueous solution ‘B’ to ‘A’, the pink colour di
lara31 [8.8K]

Answer:

(iii) A has pH greater than 7 and B has pH less than 7

Explanation:

Phenolphthalein is a common indicator in acid base titrations. It turns pink in basic conditions and turns colorless in acidic conditions. Thus on addition of solution A it becomes pink so A should be basic having pH more than 7. On addition of B , it turn out to be colorless means that B is an acidic solution having pH less than 7.

8 0
2 years ago
Arranges the following molecules in order of increasing dipole moment: <br> H2O, H2S, H2Te, H2Se.
erastova [34]

Explanation:

Dipole moment is defined as the measurement of the separation of two opposite electrical charges.

H_{2}O is a bent shaped molecule with a dipole moment of 1.87.

H_{2}S is also a bent shaped molecule with a dipole moment of 1.10.

H_{2}Te is a also a bent shaped molecule and has a negligible dipole moment.

H_{2}Se has a dipole moment of 0.29.

Therefore, given molecules are arranged according to their increasing dipole moment as follows.

        H_{2}Te < H_{2}Se < H_{2}S < H_{2}O

7 0
2 years ago
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