1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rudik [331]
3 years ago
13

Which of these equations is balanced?

Chemistry
2 answers:
aev [14]3 years ago
6 0
B is the answer. For an equation to be balanced there must be the same amount of each element on the two sides. The only one where this is the case is B.
mixas84 [53]3 years ago
6 0
The Correct Answer is B

B) 2NaCl + H2SO4 ----> Na2SO4 + 2HCl
              
You might be interested in
When a white powder is added to a liquid in a beaker at room temperature, the beaker becomes too hot to touch. What kind of reac
Varvara68 [4.7K]
<span>C. an exothermic reaction
</span>
6 0
3 years ago
Read 2 more answers
Why do gasses condense when cooled
Darya [45]
Gassed condense because molecules decrease inside
6 0
2 years ago
What does covalent and ionic bond have to do with chemical bond?
krok68 [10]
Covalent and ionic bonds are two different types of chemical bonding.  Covalent bonds involve the sharing of electrons between 2 atoms while ionic bonds involve the complete transferring of electrons from one atom to another.  Covalent bonds usually form between two nonmetals while ionic bonds usually form between a metal and a nonmetal.   
I hope this helps.  Let me know if anything is unclear.  
5 0
2 years ago
Calculate the molarity of an HCl solution if 23.88 mL of it reacts with 6.5287 grams of sodium carbonate (106 g/mol) according t
Ivanshal [37]

Answer:

5.158 mol/L

Explanation:

To find the molarity, you need to use the formula:

Molarity (M) = moles / volume (L)

You have been grams sodium carbonate. You need to (1) convert grams Na₂CO₃ to moles (via molar mass), then (2) convert moles Na₂CO₃ to moles HCl (via mole-to-mole ratio from equation), then (3) convert mL to L (by dividing by 1,000), and then (4) use the molarity equation.

<u>Steps 1 - 2:</u>

2 HCl + 1 Na₂CO₃ ----> 2 NaCl + H₂O + CO₂

6.5287 g Na₂CO₃         1 mole            2 moles HCl
--------------------------  x  -------------  x  -------------------------  =  0.12318 mole HCl
                                      106 g           1 mole Na₂CO₃

<u>Step 3:</u>

23.88 mL / 1,000 = 0.02388 L

<u>Step 4:</u>

Molarity = moles / volume

Molarity = 0.12318 mole / 0.02388 L

Molarity = 5.158 mole/L

**mole/L is equal to M**

7 0
1 year ago
The goal of this lesson:
mote1985 [20]

Answer:

1. The concentration of N₂O₄ decrease as the temperature of the system increased.

2. The formation of products was favored by the addition of heat.

3. The reaction going from right to left is exothermic.

4. N₂O₄ → 2NO₂; HR = +14 kcal.

Explanation:

Equation of the reaction is as follows: N₂O₄ ⇄ 2NO₂

The forward reaction proceeds with an increase in temperature. As the temperature of the reaction was increased, more of the N₂O₄ decomposed to form NO₂. Therefore, the concentration of N₂O₄ deceased.

2. The formation of products, that is the forward reaction leading to formation of NO₂ was favored by the addition of heat. Thus, with increase in temperature, the concentration of NO₂ increased.

3. An endothermic reaction is a type of reaction which requires energy input in the form of heat in order to proceed.

From the observations during the reaction, an increase in temperature by the addition of heat resulted in an increase in the forward reaction, therefore, the forward reaction is endothermic and the backward reaction is exothermic. Thus, the reaction in which colorless N₂O₄ is produced, is an exothermic reaction.

4. The change in enthalpy of a reaction is the difference in the heat content of reactants and products. For exothermic reactions, enthalpy change is negative, whereas for endothermic reactions, enthalpy change is positive.

The decomposition of  N₂O₄ to NO₂ is an endothermic reaction. Hence, the correct chemical equation is: N₂O₄ → 2NO₂; HR = +14 kcal.

7 0
3 years ago
Other questions:
  • Two systems of monotonic ideal gas are separated by a diathermal wall. In system A there are 2 moles initially at 175 K, in syst
    6·1 answer
  • In the structure shown, each vertices is a carbon atom. for example, the ring has six carbon atoms and the chain has three carbo
    5·2 answers
  • In a combustion reaction, ethanol (C2H5OH) is burned in the presence of oxygen (O2), producing carbon dioxide (CO2) and water (H
    13·1 answer
  • Let the ED50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. If the
    6·1 answer
  • PLSSS HELP MEE<br><br><br>CH3COOH + Mg<br>CH3-COOH+MgO<br>CH3 -COOH + Mg(OH)2<br>CH3-COOH + MgCO3​
    11·1 answer
  • Enter a balanced nuclear equation for the production of lead-212, used in the treatment of some cancers, from the beta decay of
    6·1 answer
  • Which one of these terms represents the chemistry definition and why are the other three wrong? Please help
    12·1 answer
  • In the following structure, carbons (I),(2),(3) and (4) are classified respectively as
    8·1 answer
  • The Big Bang theory is used to explain the origins of the universe. Why is this called a theory and NOT a law?
    9·2 answers
  • Identify the Brønsted–Lowry acid and the Brønsted–Lowry
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!