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mojhsa [17]
3 years ago
14

Desiré was investigating a chemical reaction.When she heated it up, she found that sulfuric acid changed into water. She made th

e following atomic-scale model to show what she thinks happened. Do you think this is a complete model of what happened during the chemical reaction?

Chemistry
1 answer:
pochemuha3 years ago
3 0

Answer:

no it is not a complete model

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When maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas write the balanved equati
babunello [35]

Answer: When maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas then balanced equation is MnO_{2} + 4HCl \rightarrow 2H_{2}O + MnCl_{2} + Cl_{2}.

Explanation:

The word equation is given as maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas.

Now, in terms of chemical formulae this reaction equation will be as follows.

MnO_{2} + HCl \rightarrow H_{2}O + MnCl_{2} + Cl_{2}

Here, number of atoms on reactant side are as follows.

  • Mn = 1
  • O = 2
  • H = 1
  • Cl = 1

Number of atoms on product side are as follows.

  • Mn = 1
  • O = 1
  • H = 2
  • Cl = 4

To balance this equation, multiply HCl by 4 on reactant side and multiply H_{2}O by 2 on product side. Therefore, the equation can be rewritten as follows.

MnO_{2} + 4HCl \rightarrow 2H_{2}O + MnCl_{2} + Cl_{2}

Hence, number of atoms on reactant side are as follows.

  • Mn = 1
  • O = 2
  • H = 4
  • Cl = 4

Number of atoms on product side are as follows.

  • Mn = 1
  • O = 2
  • H = 4
  • Cl = 4

Since, this equation contains same number of atoms on both reactant and product side. Therefore, this equation is now balanced equation.

Thus, we can conclude that when maganese dioxide is added to hydrogen chloride you get water maganese dichloride and chlorine gas then balanced equation is MnO_{2} + 4HCl \rightarrow 2H_{2}O + MnCl_{2} + Cl_{2}.

6 0
3 years ago
19. This type of bond involves the bonding of two ions of opposite charges
hammer [34]

Answer:

Covalent bond is a type of bond involves the bonding of two ions of opposite charges.

<h3><u>PLEASE</u><u> MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
7 0
2 years ago
A 7th grade science class placed three large grade A eggs into beakers and recorded the mass. They then filled one beaker with v
lisov135 [29]
Independent- The vinegar,corn syrup, distilled water
Dependent- The mass of the egg
Constant- the egg and the beaker 


3 0
2 years ago
Is Li has 7 valence electrons
jeka94
This is false. The amount of electrons in lithium (Li) is not 7, it is 3. There are 3 electrons in lithium.
3 0
3 years ago
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What quantity measures the amount of space an object occupies?
mylen [45]
The answer would be volume
3 0
1 year ago
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