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Scorpion4ik [409]
3 years ago
12

Please help and thank you

Chemistry
1 answer:
leonid [27]3 years ago
6 0
The answer is C . Hope it helps
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Complete and balance each of the following equations for gas evolution reactions HCl(aq)+ZnS(s)>
DENIUS [597]

2HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)

<h3>Further explanation  </h3>

Equalization of chemical reactions can be done using variables. Steps in equalizing the reaction equation:  

  • 1. gives a coefficient on substances involved in the equation of reaction such as a, b, or c, etc.  
  • 2. make an equation based on the similarity of the number of atoms where the number of atoms = coefficient × index (subscript) between reactant and product  
  • 3. Select the coefficient of the substance with the most complex chemical formula equal to 1  

Reaction

HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)

1. give equation

aHCl(aq) + bZnS(s) ⇒ ZnCl₂(aq) + cH₂S(g)

2. make an equation

H, left=a, right=2c⇒a=2c(eq 1)

Cl, left=a, right=2⇒a=2⇒c=1(from eq 1)

Zn, left=b, right=1⇒b=1

So the equation :

2HCl(aq) + ZnS(s) ⇒ ZnCl₂(aq) + H₂S(g)

4 0
3 years ago
which of the following is a product formed whrb NO2 and H2O react together A O2 B HNO3 C H2 D P(OH)2
marshall27 [118]
The answer to your question is HNO3
8 0
3 years ago
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How many carbon atoms are represented by the model below<br><br> A) 0<br> B) 3<br> C) 2<br> D) 1
Bogdan [553]

Answer:

Option (B) 3.

Explanation:

In the model represented above, the two extreme represent carbon atoms since no other group are attached to it. The joint at the middle also represent carbon atom.

Thus, we can write a more simplify illustration for the model above as

C—C—C

From the above illustration, we can see that the model contains 3 carbon atom.

5 0
3 years ago
Please help me with this friends.​
Radda [10]
Where is the picture to this?
3 0
3 years ago
True or false(Internal forces act on the outside of an object, and external forces act within an object.)
kkurt [141]
False I’m not sure exactly
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