reactant
6co₂ + 6h₂o → c₆h₁₂o₆ + 6o₂
subscript coefficient compound element
use the chemical equation below to answer questions 1-2. label the reactants and products
reactant product
c₂h₅oh + 3o₂ → 2co₂ + 3h₂o
1 what elements are involved in this chemical equation? carbon
oxygen hydrogen
2 how many compounds can be found on the reactants side of the equation?
1

use the chemical equation below to answer questions 9-10. label the reactants and products.
reactant product
nh₃ + hno₃ → nh₄no₃ + h₂
9. complete the table below. identify the elements and number of atoms for each element in the table below.
reactants products
element # of atoms # of atoms element
n 2 2 n
h 4 6 h
o 3 3 o
10. does the chemical equation follow the law of conservation of mass? explain your answer. no because there is two more hydrogen on the products

use the chemical equation below to determine if the statements below are true. place a checkmark in the space if the statement is correct and place an x if the statement is incorrect. label the reactants and products.
reactant products
zn + h₂so₄ → znso₄ + h₂
correct or incorrect statement
11. 4 sulfur atoms are on the reactants side, and 1 sulfur atom is on the products side.
12. there are 4 different elements involved in this chemical equation.
13. 2 hydrogen atoms are on the reactants side, and 2 hydrogen atoms are on the products side.
14. only one new substance is formed on the products side.

Question

reactant
6co₂ + 6h₂o → c₆h₁₂o₆ + 6o₂
subscript coefficient compound element
use the chemical equation below to answer questions 1-2. label the reactants and products
reactant product
c₂h₅oh + 3o₂ → 2co₂ + 3h₂o
1 what elements are involved in this chemical equation? carbon
oxygen hydrogen
2 how many compounds can be found on the reactants side of the equation?
1

use the chemical equation below to answer questions 9-10. label the reactants and products.
reactant product
nh₃ + hno₃ → nh₄no₃ + h₂
9. complete the table below. identify the elements and number of atoms for each element in the table below.
reactants products
element # of atoms # of atoms element
n 2 2 n
h 4 6 h
o 3 3 o
10. does the chemical equation follow the law of conservation of mass? explain your answer. no because there is two more hydrogen on the products

use the chemical equation below to determine if the statements below are true. place a checkmark in the space if the statement is correct and place an x if the statement is incorrect. label the reactants and products.
reactant products
zn + h₂so₄ → znso₄ + h₂
correct or incorrect statement
11. 4 sulfur atoms are on the reactants side, and 1 sulfur atom is on the products side.
12. there are 4 different elements involved in this chemical equation.
13. 2 hydrogen atoms are on the reactants side, and 2 hydrogen atoms are on the products side.
14. only one new substance is formed on the products side.

Accepted Answer

### Question 1: What elements are involved in the chemical equation $\boldsymbol{\ce{C2H5OH + 3O2 -> 2CO2 + 3H2O}}$?
# Explanation:
## Step 1: Identify elements in each compound
- In $\ce{C2H5OH}$: Elements are Carbon (C), Hydrogen (H), Oxygen (O).
- In $\ce{O2}$: Element is Oxygen (O).
- In $\ce{CO2}$: Elements are Carbon (C), Oxygen (O).
- In $\ce{H2O}$: Elements are Hydrogen (H), Oxygen (O).

## Step 2: Collect unique elements
Combine all elements and remove duplicates. The unique elements are Carbon (C), Hydrogen (H), and Oxygen (O).

# Answer: Carbon (C), Hydrogen (H), Oxygen (O)

### Question 2: How many compounds are on the reactants side of $\boldsymbol{\ce{C2H5OH + 3O2 -> 2CO2 + 3H2O}}$?
# Explanation:
## Step 1: Define "compound" and "element"
A compound is a substance with two or more different elements. An element (in elemental form) has only one type of atom (e.g., $\ce{O2}$ is an element, $\ce{C2H5OH}$ is a compound).

## Step 2: Analyze reactants
Reactants: $\ce{C2H5OH}$ (compound, 3 elements) and $\ce{3O2}$ (element, 1 type of atom). So only $\ce{C2H5OH}$ is a compound on the reactants side.

# Answer: 1

### Question 9: Complete the table for $\boldsymbol{\ce{NH3 + HNO3 -> NH4NO3 + H2}}$ (Reactants: $\ce{NH3, HNO3}$; Products: $\ce{NH4NO3, H2}$)
#### Reactants (Left Side):
- **Nitrogen (N):** $\ce{NH3}$ has 1 N, $\ce{HNO3}$ has 1 N. Total: $1 + 1 = 2$.
- **Hydrogen (H):** $\ce{NH3}$ has 3 H, $\ce{HNO3}$ has 1 H. Total: $3 + 1 = 4$.
- **Oxygen (O):** $\ce{HNO3}$ has 3 O. Total: $3$.

#### Products (Right Side):
- **Nitrogen (N):** $\ce{NH4NO3}$ has 2 N (1 from $\ce{NH4^+}$, 1 from $\ce{NO3^-}$). $\ce{H2}$ has 0 N. Total: $2$.
- **Hydrogen (H):** $\ce{NH4NO3}$ has 4 H, $\ce{H2}$ has 2 H. Total: $4 + 2 = 6$. Wait, no—wait, the original equation is unbalanced. Wait, the user’s table has some handwritten numbers, but let's recalculate correctly. Wait, the equation as written is $\ce{NH3 + HNO3 -> NH4NO3 + H2}$. Let's count atoms:

Reactants:
- N: 1 (from $\ce{NH3}$) + 1 (from $\ce{HNO3}$) = 2
- H: 3 (from $\ce{NH3}$) + 1 (from $\ce{HNO3}$) = 4
- O: 3 (from $\ce{HNO3}$)

Products:
- N: 2 (from $\ce{NH4NO3}$)
- H: 4 (from $\ce{NH4NO3}$) + 2 (from $\ce{H2}$) = 6
- O: 3 (from $\ce{NH4NO3}$)

So the table should be:

| Reactants (Element) | # of Atoms | Products (Element) | # of Atoms |
|---------------------|------------|---------------------|------------|
| N                   | 2          | N                   | 2          |
| H                   | 4          | H                   | 6          |
| O                   | 3          | O                   | 3          |

(Note: The handwritten table in the image has errors, likely due to miscalculating H in products. The correct counts are above.)

### Question 10: Does $\boldsymbol{\ce{NH3 + HNO3 -> NH4NO3 + H2}}$ follow the law of conservation of mass?
# Explanation:
## Step 1: Recall the law
The law of conservation of mass states that the number of atoms of each element must be equal on both sides (reactants and products) in a balanced chemical equation.

## Step 2: Compare atom counts
- **Nitrogen (N):** 2 (reactants) vs. 2 (products) → balanced.
- **Oxygen (O):** 3 (reactants) vs. 3 (products) → balanced.
- **Hydrogen (H):** 4 (reactants: 3 from $\ce{NH3}$, 1 from $\ce{HNO3}$) vs. 6 (products: 4 from $\ce{NH4NO3}$, 2 from $\ce{H2}$) → unbalanced (4 ≠ 6).

Since the number of H atoms is not equal, the equation does not follow the law of conservation of mass (it is unbalanced).

# Answer: No. The number of hydrogen atoms is not equal on both sides (4 in reactants vs. 6 in products), so mass is not conserved.

### Question 11: "4 Sulfur atoms are on the reactants side, and 1 Sulfur atom is on the products side" (Equation: $\boldsymbol{\ce{Zn + H2SO4 -> ZnSO4 + H2}}$)
# Explanation:
## Step 1: Count S atoms in reactants
Reactants: $\ce{H2SO4}$ has 1 S atom (subscript 1 for S in $\ce{H2SO4}$). So reactants have 1 S atom, not 4.

## Step 2: Count S atoms in products
Products: $\ce{ZnSO4}$ has 1 S atom. So products have 1 S atom.

The statement claims 4 S in reactants and 1 in products, which is false.

# Answer: Incorrect (X)

### Question 12: "There are 4 different elements involved in this chemical equation" (Equation: $\boldsymbol{\ce{Zn + H2SO4 -> ZnSO4 + H2}}$)
# Explanation:
## Step 1: Identify elements
Elements in the equation: Zinc (Zn), Hydrogen (H), Sulfur (S), Oxygen (O). That’s 4 elements.

The statement says "4 different elements," which matches.

# Answer: Correct (✓)

### Question 13: "2 Hydrogen atoms are on the reactants side, and 2 hydrogen atoms are on the products side" (Equation: $\boldsymbol{\ce{Zn + H2SO4 -> ZnSO4 + H2}}$)
# Explanation:
## Step 1: Count H in reactants
Reactants: $\ce{H2SO4}$ has 2 H atoms (subscript 2 for H). So reactants have 2 H.

## Step 2: Count H in products
Products: $\ce{H2}$ has 2 H atoms. So products have 2 H.

The counts are equal (2 = 2), so the statement is true.

# Answer: Correct (✓)

### Question 14: "Only one new substance is formed on the products side" (Equation: $\boldsymbol{\ce{Zn + H2SO4 -> ZnSO4 + H2}}$)
# Explanation:
## Step 1: Identify products
Products: $\ce{ZnSO4}$ (zinc sulfate) and $\ce{H2}$ (hydrogen gas). These are two distinct new substances (different from reactants: $\ce{Zn}$ and $\ce{H2SO4}$).

The statement claims "only one," which is false.

# Answer: Incorrect (X)

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Question 1: What elements are involved in the chemical equation $\boldsymbol{\ce{C2H5OH + 3O2 -> 2CO2 + 3H2O}}$?

Step 1: Identify elements in each compound

Step 2: Collect unique elements

Step 1: Define "compound" and "element"

Step 2: Analyze reactants

Step 1: Recall the law

Step 2: Compare atom counts

Answer:

Question 2: How many compounds are on the reactants side of $\boldsymbol{\ce{C2H5OH + 3O2 -> 2CO2 + 3H2O}}$?