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
pshichka [43]
3 years ago
6

What is not represented by a balanced chemical equation?

Chemistry
1 answer:
astraxan [27]3 years ago
5 0

Answer is: 4) The same subscripts are on each side of the equation.

For example, balanced chemical reaction:

2Mg + O₂ → 2MgO.

1) The same number of atoms is on each side of the equation: two magnesium atoms and two oxgen atoms.

2) The formulas for all substances are correct: in magnesium oxide (MgO), magnesium has oxidation number +2 and oxygen -2, so formula is good, because compound must be neutral.

3) The same mass is represented on each side of the equation: because there is same number of atoms, the mass is the same.

4) The same subscripts are on each side of the equation: oxygen does not have same subscripts.

You might be interested in
Use enthalpies of formation to determine the ΔHreaction for the reaction
Daniel [21]

Answer:

The enthalpy is increased by the increased heat of the reaction.

Explanation:

In this reaction, as the transition from solid to liquid state, enthalpy increases, that is, the heat applied to change its state is greater and this increases, reaching a mayor disorder.

If the reaction increases its heat, and a liquid state passes, the enthalpy increases, therefore the disorder also and the entropy will also be increased.

5 0
3 years ago
Why must reagent bottles be closed when not in use?
Katen [24]

Answer to your question.

7 0
3 years ago
Using the reagents below, list in order (by letter, no period) those necessary to transform 1-chlorobutane into 1-butyne. Note:
Andru [333]

Answer:

gde

Explanation:

We are attempting to synthesize 1-butyne from 1-chlorobutane. Since 1-chlorobutane is a primary alkyl halide, 1-butene is formed when 1-chlorobutane is reacted with a bulky base such as t -BuOK or t -BuOH in presence of strong heat. This is an E2 reaction.

Secondly, the 1-butene is reacted with bromine in carbon tetrachloride. The vicinal dihalide (1,2-dibromobutane) is formed. This can now undergo further elimination reactions in the presence of sodamide and strong heat to yield 1-butyne which is the desired product. These reactions involve the elimination of the first HBr molecule to give an alkenyl bromide. A second elimination now gives the terminal alkyne.

3 0
3 years ago
Why isn't geothermal energy used more often?
lianna [129]

Geothermal energy is not used more often because it's hard to find geothermal energy sources that are close to the surface (Option A).

<h3>What is Geothermal energy?</h3>

Geothermal energy is a special type of sustainable renewable source of clean energy that emerges from thermal (temperature) differences on the Earth, e.g., within geysers and similar geological formations.

In conclusion, geothermal energy is not used more often because it's hard to find geothermal energy sources that are close to the surface (Option A).

Learn more about Geothermal energy here:

brainly.com/question/19666326

#SPJ1

5 0
1 year ago
The atomic mass of potassium is 39.1. What is the mass of 6.02 × 1023 atoms of potassium? . . A.. 39.1 mg. . . . . B.. 39.1 g. .
Sholpan [36]
Atomic mass of Potassium = Mass of 1 atom of Potassium = 39.1 amu
Then
Mass of 6.02 x 1023 atoms of potassium = 39.1 x 6.02 x 1023 amu
                                                                  = 
We already know that
1 mole = 6.02 x 1023 atoms
Also
Number of mole = mass in grams/ atomic mass
Then
Mass in gram = Number of mole x atomic mass
                       = (39.1 x 6.02 x 1023)/(6.02 x 1023)
                       = 39.1 g
The correct option among all the options that are given in the question is the third option or option "B".
6 0
3 years ago
Read 2 more answers
Other questions:
  • A solution is prepared by dissolving 10.0 g of NaBr and 10.0 g of Na2SO4 in water to make a 100.0 mL solution. This solution is
    6·1 answer
  • At room temperature, which of these are oxide minerals? Select all that apply.
    8·2 answers
  • How did agre use a simple osmosis experiment to prove the function of aquaporin?
    7·1 answer
  • Which of the following amino acids have more than one asymmetric center?
    13·1 answer
  • The enthalpy of vaporization of a certain liquid is found to be 14.4 kJ mol-1 at 180 K, its normal boiling point. The molar volu
    15·1 answer
  • If I have 2.5 moles of a gas at a pressure of 7.4 atm and volume of 8.2 liters. What is the temperature
    12·1 answer
  • In a few sentences, describe the molecular polarity and the intermolecular forces present in ammonium lauryl sulfate.
    12·1 answer
  • Which of the following would lose heat the fastest?
    11·1 answer
  • Which statement correctly describes gravity?
    15·2 answers
  • Determine the theoretical yield of PbCh2
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!