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
Alexeev081 [22]
2 years ago
10

When the mixture was moved from room temperature to a higher temperature, the mixture turned darker brown. Which of the followin

g conclusions about the mixture is true?
The forward reaction is exothermic.
The backward reaction has a negative net enthalpy.
The colorless gas has a higher enthalpy than the brown gas.
The equilibrium between the two forms of the gas is disturbed at high temperatures.
Chemistry
1 answer:
Wittaler [7]2 years ago
7 0

Answer:

The equilibrium between the two forms of the gas is disturbed at high temperatures.

You might be interested in
How many valence electrons do transition metals have?
alukav5142 [94]
The group/family number is the same number of valance electrons.
4 0
3 years ago
A student with a body temperature of 37°C holds a piece of
Alika [10]

Answer:

D i think. Not sure.

Explanation:

I mean i just did it myself, and i dont really do chemistry, but I would say D sorrry if i made you get it wrong!!

6 0
2 years ago
Read 2 more answers
What is the percent by mass of water in Na S04.10H20?
dalvyx [7]

Answer:

                    Percent by mass of water is 56%

Explanation:

                    First of all calculate the mass of hydrated compound as,

Mass of Sodium = Na × 2 = 22.99 × 1 = 45.98 g

Mass of Sulfur = S × 1 = 32.06 × 1 = 32.06 g

Mass of Oxygen = O × 14 = 16 × 14 = 224 g

Mass of Hydrogen = H × 20 = 1.01 × 20 = 20.2 g

Mass of Na₂S0₄.10H₂O = 322.24 g

Secondly, calculate mass of water present in hydrated compound. For this one should look for the coefficient present before H₂O in molecular formula of hydrated compound. In this case the coefficient is 10, so the mass of water is...

Mass of water = 10 × 18.02

Mass of water = 180.2 g

Now, we will apply following formula to find percent of water in hydrated compound,

           %H₂O  =  Mass of H₂O / Mass of Hydrated Compound × 100

Putting values,

                                      %H₂O  = 180.2 g / 322.24 g × 100

                                           %H₂O =  55.92 % ≈ 56%

3 0
3 years ago
1. Classify each of the following as a homogeneous or heterogeneous substance.
Olegator [25]

a. iron ore  - heterogeneous substance

(it contains a mixture of iron oxides)

b. quartz  - homogeneous substance

(it is the crystalline silicon dioxide SiO₂, which is a very pure form of SiO₂)

c. granite  - heterogeneous substance

(it as mixture of different oxides, mainly aluminium and silicon oxides)

d. energy drink  - heterogeneous substance

(a mixture of water, sugar, carbon dioxide and different substances that may boost concentration, like caffeine)

e. oil-and-vinegar salad dressing  - heterogeneous substance

(this salad dressing of oil and vinegar is composed of unsaturated triglycerides, acetic acid and water)

f. salt  - homogeneous substance

(sodium chloride NaCl)

g. rainwater  - homogeneous substance

(assuming the the atmosphere is clean, it is just pure water H₂O)

h. nitrogen - homogeneous substance

(it is the main component of air and it is a diatomic molecule N₂)

7 0
3 years ago
Read 2 more answers
What are the four types of biological molecules and their main function in the human body?
Flauer [41]

Answer:

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids)

Explanation:

There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. ... Biological macromolecules are organic, meaning that they contain carbon.

7 0
3 years ago
Other questions:
  • The deployment of airbags during a car accident results from a chemical reaction that, until the 1990s, involved sodium azide, N
    5·1 answer
  • Which of the following describes a spontaneous reaction?
    13·1 answer
  • 3500 J of energy are added to a 0.5 mol sample of iron at 293 K. What is the final temperature of the iron in kelvins? The molar
    11·2 answers
  • Which best describes the molecules of an ideal gas?
    11·1 answer
  • a few drops of perfume were spilt on the floor a few minutes later ghe perfume could be smelt a few meters away what 2 processes
    15·1 answer
  • What is the molar mass of CH 4 ? (C = 12.01g / m * o * l, H = 1.008g / m * o * l)
    5·2 answers
  • PLS HELP OUTTTT PLSSSS . What seismic graph used for?"
    15·1 answer
  • ANSWER ASAP GIVING BRAINIEST FIVE STARS AND HEART!
    7·2 answers
  • Name the producer in the food chain? <br>​
    11·1 answer
  • In the laboratory you dissolve 12.2 g of iron(II) iodide in a volumetric flask and add water to a total volume of 500 mL.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!