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Shkiper50 [21]
3 years ago
5

List three possible results of a double replacement reaction

Chemistry
1 answer:
Naddik [55]3 years ago
8 0
1. two compounds form
2. precipitate forms
3. ions exchanged between the two reactants
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What are deltaTb and deltaTf for an aqueous solution that is 1.5g nacl in 0.250kg h2o? Given Kb=0.51 C/m and kr=1.86 C/m
bulgar [2K]

Answer:

T_f for given question is 2.79 and T_b is 0.52

\Delta T_b = I \times K_b \times m {i- vant hoff’s constant ; Kb- constant ; m molarity }

M = no. of moles of the solute present in one kg of solution

Let the weight of amount of solute be “w” and its molecular mass be “M”

Let the mass of the solvent in the given question be “x”

\Delta T_b = I \times K_b \times (w/M)/ x

\Delta T_b = I \times K_b \times w/Mx

\Delta T_b = 1 \times 0.51 \times1.5/(0.250 \times 58.44) = 0.052

\Delta T_f = M \times K_f = 1.86 \times 1.5 = 2.79

4 0
3 years ago
Identifying Characteristics of Atoms
Anon25 [30]

Explanation:

The number of protons in an atom is the atomic number.

Mass number is the number of protons plus neutrons in an atom.

  Mass number  = number of protons + number of neutrons

Atomic number  = number of protons

Atomic number gives the symbol of the element

Number        Number      Atomic      Mass          Symbol

 Protons       neutrons     Number    Number

     A                    7                 B              15                C

     D                   E                 26             56               F

A, number of protons  = B

 Mass number  = protons + neutrons

          15  = protons + 7

          Protons  = 15 - 7  = 8

Atomic number 8 is for oxygen = C

Atomic number  = number of protons  = D = 26

Number of neutrons ;

          E =    Neutrons  = mass number - protons  = 56  - 26  = 30

Atomic number 26 is for Iron = F

8 0
2 years ago
Which material cannot be made into a magnet ?
bogdanovich [222]
<span>Its b.aluminum 

I hope this helps and sorry if I am wrong </span>
7 0
2 years ago
Read 2 more answers
Please help me! I will fail science if I don’t finish this test :(
Tasya [4]

Answer:

<h2>A. Mercury's orbit is shorter than Earth</h2>
6 0
3 years ago
A student combines 34 grams of one chemical and an unknown amount of another chemical in a closed system. A chemical reaction oc
Stells [14]
Answer:

82 grams

Step by step:

116-34=82
6 0
2 years ago
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