Consider the incomplete chemical equation

Answers

There would have to be three nitrogen atoms in the products. The law of conservation of matter states that the amount of substance before a reaction occurs should be the same as the amount of substance after the reaction.

Explanation:

There are three nitrogen atoms in the products. The law of conservation of mass states that the amount of substance should be the same before and after a reaction.

Explanation:

The coefficients are: 2,1,1,2 (Option 3)

Explanation:

Step 1: Unbalanced equation

HCl + Na2CO3 → H2CO3 + NaCl

Step 2 : Balancing the equation

On the right side we have 2x H (in H2CO3), on the left side we have 1x H (in HCl). To balance the amount of H, we have to multiply HCl, on the left side, by 2.

2 HCl  + Na2CO3  →  H2CO3 + NaCl

On the left side we have 2x Na (in Na2CO3), on the right side, we have 1x Na (in NaCl). To balance the amount of Na, we have to multiply NaCl, on the right side, by 2. Now the equation is balanced.

2 HCl  + Na2CO3  →  H2CO3 + 2NaCl

The coefficients are: 2,1,1,2 (Option 3)

The answer to your question is the coefficients are 2, 1, 1, 2

Explanation:

Chemical Reaction                            

                              HCl  +   Na₂CO₃   ⇒    H₂CO₃   +   NaCl

                       Reactants            Elements             Products

                               1                         Cl                          1

                               2                         Na                        1

                                1                         C                          1

                                1                         H                         2

                                3                        O                          3

This reaction is unbalanced

                            2 HCl  +   Na₂CO₃   ⇒    H₂CO₃   +   2 NaCl

                       Reactants            Elements             Products

                               1                         Cl                          1

                               2                         Na                        2

                               2                         C                          2

                               2                         H                          2

                               3                        O                          3

Now, the reaction is balanced.

The answer to this question is C. I just had this question.

She has to multiplying the number from her equation to answer the question

Explanation:

She can conclude that the reaction started with three nitrogen atoms because she can be based in the law of conservation of matter which states that the amount of matter in a system is conserved: there were three atoms of nitrogen in the reactants and they produced three atoms of nitrogen.

Explanation:

In science, a law is a general statement that explains a large number of observations. One law that provides the foundation for understanding in chemistry is the law of conservation of matter: it states that in any given system that is closed to the transfer of matter (in and out), the amount of matter in the system stays constant, or in other words, the amount of matter in a system is conserved.

So, in this case, for Marcia to conclude that the reaction started with three nitrogen atoms, she can be based in the law of conservation of matter, and because the matter of that system is conserved, there were three atoms of nitrogen in the reactants and they produced three atoms of nitrogen.

If the products contain 3 nitrogen atoms, then so did the reactants since overall mass is conserved in a chemical reaction.

Explanation:

a) ZnCl₂; Zn + 2HCl ⟶ ZnCl₂ + H₂

b) MgO;  2Mg + O₂ ⟶ 2MgO

c) Al₂O₃; 4Al + 3O₂ ⟶ 2Al₂O₃

Explanation:

a) Zn + HCl

(i) Identify the missing compound

Zn + HCl ⟶ a +H₂

We have Zn and Cl on the left but not on the right.

a = ZnCl₂

(ii) Write the balanced equation

Zn + 2HCl ⟶ ZnCl₂ + H₂

b) 2Mg

(i) Identify the missing element

2Mg + b ⟶ 2MgO

We have O on the right but not on the left.

b = O₂

(ii) Write the balanced equation

2Mg + O₂ ⟶ 2MgO

c) 4Al + 3O₂

(i) Identify the missing compound

4Al + 3O₂ ⟶ c

We have Al and O on the left but not on the right.

The missing substance must be a compound of Al and O₂.

c = Al₂O₃

(ii) Write the balanced equation

4Al + 3O₂ ⟶ 2Al₂O₃

There would have to be three nitrogen atoms in the products. The law of conservation of matter states that the amount of substance before a reaction occurs  should be the same as the amount of substance after the reaction.

Explanation: This is the EXACT sample answer from the test, just reword it if you want. ^



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