for their lab report, students must describe a chemical reaction in words.
which of the following would represent the correct word equation for this equation?
cu(s) + agno₃(aq) → cu(no₃)₂(aq)+ag(s)
solid copper and silver nitrite, dissolved in water, react to form aqueous zinc nitrite and solid silver.
solid copper and silver (iii) nitrogen oxide, dissolved in water, react to form aqueous copper (ii) nitrate and solid silver.
solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver.
solid copper and silver nitrate, dissolved in water, react to form aqueous copper (ii) nitrate and solid silver.

4. choose the best answer.
the reaction between solid magnesium (mg) and atmospheric (gaseous) oxygen (o₂) is used in fireworks. this reaction creates the product magnesium oxide (mgo).
which equation shows the correct balanced equation for this reaction?
mg(g) + o₂(g) → 2mgo₂(s)
2mg(s) + o₂(l) → 2mgo(s)
2mg(s) + o₂(g) → 2mgo(s)
mg(g) + o(g) → mgo(s)

Question

for their lab report, students must describe a chemical reaction in words.
which of the following would represent the correct word equation for this equation?
cu(s) + agno₃(aq) → cu(no₃)₂(aq)+ag(s)
solid copper and silver nitrite, dissolved in water, react to form aqueous zinc nitrite and solid silver.
solid copper and silver (iii) nitrogen oxide, dissolved in water, react to form aqueous copper (ii) nitrate and solid silver.
solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver.
solid copper and silver nitrate, dissolved in water, react to form aqueous copper (ii) nitrate and solid silver.

4. choose the best answer.
the reaction between solid magnesium (mg) and atmospheric (gaseous) oxygen (o₂) is used in fireworks. this reaction creates the product magnesium oxide (mgo).
which equation shows the correct balanced equation for this reaction?
mg(g) + o₂(g) → 2mgo₂(s)
2mg(s) + o₂(l) → 2mgo(s)
2mg(s) + o₂(g) → 2mgo(s)
mg(g) + o(g) → mgo(s)

Accepted Answer

### Question 3 (Chemical Reaction Word Equation)
# Brief Explanations:
1. Analyze the chemical equation $ \text{Cu}(s) + \text{AgNO}_3(aq)
ightarrow \text{Cu(NO}_3\text{)}_2(aq) + \text{Ag}(s) $:
   - Reactants: Solid copper ($ \text{Cu}(s) $) and aqueous silver nitrate ($ \text{AgNO}_3(aq) $).
   - Products: Aqueous copper(II) nitrate ($ \text{Cu(NO}_3\text{)}_2(aq) $) and solid silver ($ \text{Ag}(s) $).
2. Evaluate the options:
   - Option 1: Incorrect reactant (silver nitrite instead of silver nitrate) and incorrect product (zinc nitrite instead of copper(II) nitrate).
   - Option 2: Incorrect nitrate type (nitrogen oxide is wrong, should be nitrate) and incorrect copper nitrate oxidation state (III instead of II).
   - Option 3: Correct reactants (solid copper and aqueous silver nitrate) and correct products (aqueous copper(II) nitrate and solid silver).
   - Option 4: Incorrect product (aqueous copper(II) nitrate is wrong, the product from the equation is aqueous copper(II) nitrate, but the description here is inconsistent with the equation's product formation logic? Wait, no—wait, the equation is $ \text{Cu} + \text{AgNO}_3
ightarrow \text{Cu(NO}_3\text{)}_2 + \text{Ag} $. So reactants: solid Cu and aqueous $ \text{AgNO}_3 $; products: aqueous $ \text{Cu(NO}_3\text{)}_2 $ and solid Ag. Option 3 says "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" (note: copper nitrate here is copper(II) nitrate, which is implied). Option 4 says "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver"—wait, maybe a typo in the image, but based on the equation, the correct word equation should match reactants (solid Cu, aqueous $ \text{AgNO}_3 $) and products (aqueous $ \text{Cu(NO}_3\text{)}_2 $, solid Ag). So the correct option is the one that matches: "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" (Option 3? Wait, the options as per the image: Let's recheck. The options are:

- Option 1: Solid copper and silver nitrite, dissolved in water, react to form aqueous zinc nitrite and solid silver. (Wrong: nitrite, zinc)
   - Option 2: Solid copper and silver (III) nitrogen oxide, dissolved in water, react to form aqueous copper (III) nitrate and solid silver. (Wrong: nitrogen oxide, III oxidation)
   - Option 3: Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver. (Correct: matches reactants and products)
   - Option 4: Solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver. (Also correct? Wait, the equation has $ \text{Cu(NO}_3\text{)}_2 $, which is copper(II) nitrate. But maybe the option 3 is written as "copper nitrate" (implying II) and option 4 specifies (II). But based on the equation, the correct word equation should have silver nitrate (not nitrite), copper nitrate (II), and products as aqueous copper(II) nitrate and solid silver. Wait, maybe the original options have a typo, but the best match is the one with silver nitrate, copper nitrate, and correct products. So the correct option is the one that says "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" (assuming option 3 or 4—wait, the image's option 3: "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" and option 4: "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver". Both are close, but the equation has $ \text{Cu(NO}_3\text{)}_2 $, which is copper(II) nitrate. However, maybe the intended correct option is the one with silver nitrate, copper nitrate (II), and solid silver. But based on the options, the correct one is the third or fourth? Wait, the equation is $ \text{Cu}(s) + \text{AgNO}_3(aq)
ightarrow \text{Cu(NO}_3\text{)}_2(aq) + \text{Ag}(s) $. So the word equation should be: Solid copper reacts with aqueous silver nitrate to form aqueous copper(II) nitrate and solid silver. So the option that matches is the one with solid copper, aqueous silver nitrate, aqueous copper(II) nitrate, and solid silver. So the correct option is the fourth one? Wait, the image's options: Let's parse again.

The options (from the image):

- Option 1: Solid copper and silver nitrite, dissolved in water, react to form aqueous zinc nitrite and solid silver. (Incorrect)
   - Option 2: Solid copper and silver (III) nitrogen oxide, dissolved in water, react to form aqueous copper (III) nitrate and solid silver. (Incorrect)
   - Option 3: Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver. (Correct, as it matches reactants and products, with copper nitrate being copper(II) nitrate implicitly)
   - Option 4: Solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver. (Also correct, but maybe the question considers "copper nitrate" as copper(II) nitrate, so both 3 and 4? Wait, no—maybe a typo in the image, but based on the equation, the correct word equation is "Solid copper reacts with aqueous silver nitrate to produce aqueous copper(II) nitrate and solid silver". So the correct option is the one that says that. Assuming option 3 or 4, but based on the standard, the correct option is the one with silver nitrate, solid copper, aqueous copper(II) nitrate, and solid silver. So the answer is the option: "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" (or the one with (II) if that's present). But based on the image, the correct option is likely the third or fourth, but let's check the equation again. The equation is $ \text{Cu} + \text{AgNO}_3
ightarrow \text{Cu(NO}_3\text{)}_2 + \text{Ag} $. So reactants: Cu(s) and AgNO₃(aq); products: Cu(NO₃)₂(aq) and Ag(s). So the word equation should be: Solid copper and aqueous silver nitrate react to form aqueous copper(II) nitrate and solid silver. So the correct option is the one that matches this. So the answer is the option with "solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver" (if that's an option) or the one with "copper nitrate" (implicitly II). So the correct option is the one that correctly identifies reactants (solid Cu, aqueous AgNO₃) and products (aqueous Cu(NO₃)₂, solid Ag).

# Answer:
The correct option is the one that states: "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" (or the one with (II) if present; based on the equation, the correct option is the third or fourth, but likely the third or fourth—assuming the third option is "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper nitrate and solid silver" (Option 3) or the fourth as "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver" (Option 4). However, based on the equation, the correct word equation is "Solid copper reacts with aqueous silver nitrate to produce aqueous copper(II) nitrate and solid silver", so the correct option is the one that matches this, e.g., "Solid copper and silver nitrate, dissolved in water, react to form aqueous copper (II) nitrate and solid silver" (if that's an option) or the one with "copper nitrate" (implicitly II).

### Question 4 (Balanced Chemical Equation for Mg + O₂)
# Explanation:
## Step 1: Identify Reactants and Products
Reactants: Solid magnesium ($ \text{Mg}(s) $) and gaseous oxygen ($ \text{O}_2(g) $).
Product: Solid magnesium oxide ($ \text{MgO}(s) $).

## Step 2: Write Unbalanced Equation
$ \text{Mg}(s) + \text{O}_2(g)
ightarrow \text{MgO}(s) $.

## Step 3: Balance the Equation
- **Magnesium (Mg):** 1 Mg on left, 1 Mg on right (temporarily).
- **Oxygen (O):** 2 O on left, 1 O on right. Multiply $ \text{MgO} $ by 2:
  $ \text{Mg}(s) + \text{O}_2(g)
ightarrow 2\text{MgO}(s) $.
- Now, Mg is unbalanced (1 left, 2 right). Multiply $ \text{Mg} $ by 2:
  $ 2\text{Mg}(s) + \text{O}_2(g)
ightarrow 2\text{MgO}(s) $.

## Step 4: Evaluate the Options
- Option 1: $ \text{Mg}(g) + \text{O}_2(g)
ightarrow \text{MgO}(s) $ (Unbalanced, wrong state for Mg: Mg is solid, not gas).
- Option 2: $ 2\text{Mg}(s) + \text{O}_3(g)
ightarrow 2\text{MgO}(s) $ (Wrong reactant: $ \text{O}_3 $ instead of $ \text{O}_2 $).
- Option 3: $ 2\text{Mg}(s) + \text{O}_2(l)
ightarrow 2\text{MgO}(s) $ (Wrong state for $ \text{O}_2 $: $ \text{O}_2 $ is gas, not liquid).
- Option 4: $ 2\text{Mg}(s) + \text{O}_2(g)
ightarrow 2\text{MgO}(s) $ (Balanced, correct states: $ \text{Mg}(s) $, $ \text{O}_2(g) $, $ \text{MgO}(s) $).

# Answer:
The correct equation is $ \boldsymbol{2\text{Mg}(s) + \text{O}_2(g)
ightarrow 2\text{MgO}(s)} $ (corresponding to the option with $ 2\text{Mg}(s) + \text{O}_2(g)
ightarrow 2\text{MgO}(s) $).

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Question 3 (Chemical Reaction Word Equation)

Step 1: Identify Reactants and Products

Step 2: Write Unbalanced Equation

Step 3: Balance the Equation

Step 4: Evaluate the Options

Answer:

Question 4 (Balanced Chemical Equation for Mg + O₂)