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
s344n2d4d5 [400]
2 years ago
6

Match each of Earth's spheres with its definition.

Chemistry
1 answer:
Lelechka [254]2 years ago
4 0

Answer:

First box: 4

Second box: 2

Third box: 3

Fourth box: 1

Explanation:

You might be interested in
A compound has a molar mass of 90. grams per mole and the empirical formula CH2O. What is the molecular formula of this compound
Elanso [62]
The molecular formula of this compound is C3H603 XD
8 0
3 years ago
Why does it generally take more enthalpy to ignite a solid than a gas or liquid?
Anuta_ua [19.1K]

Answer:

It is due to the nature of the reactants

Explanation:

To ignite a solid, we require more heat component compared to liquids and gases. For ignition to occur, oxygen gas combines with a reactant in most cases.

Some factors affect the rate rate at which a chemical proceeds. One of the factors is the nature of reactants.

The solid phase is very slow while the gaseous phase is rapid and fast.

            solid phase < liquid phase <  gas phase

Gases are free and the molecules move in all direction. They easily combine and react very fast.

6 0
3 years ago
A gas occupies 3.5L at 2.5 kPa pressure. What is the volume at 100 mmHg at the same temperature? Be sure to
nasty-shy [4]

The volume at 100 mmHg : 0.656 L

<h3>Further explanation</h3>

Boyle's Law  

<em>At a constant temperature, the gas volume is inversely proportional to the pressure applied  </em>

\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}

V₁=3.5 L

P₁=2.5 kPa=18,7515 mmHg

P₂=100 mmHg

\tt \dfrac{18.7515}{100}=\dfrac{V_2}{3.5}\\\\V_2=\dfrac{18.7515\times 3.5}{100}=0.656~L

4 0
2 years ago
4Fe + 3O2 → 2Fe2O3
dsp73
The correct answer is A.
5 0
2 years ago
Honestly reporting experimental findings is an example of using good
GaryK [48]
I would say that honestly reporting experimental findings is an example of using good science because science is definitely about honesty in accepting experimental findings and realizing that one has to face up to the consequences and develop things from there rather than wishing the outcome was different. 
4 0
2 years ago
Other questions:
  • Which of the following is true about the frequencies of electromagnetic radiation
    11·1 answer
  • 10 points
    15·1 answer
  • Referring to the ground state orbital diagram of Fe and Fe3+, explain why iron is considered a ferromagnetic element.
    10·1 answer
  • What is the difference between Na and Na+
    9·1 answer
  • D. potassium + iodine →
    15·1 answer
  • Difference between compound and bond? (Ex. Ionic Compound vs Bond)
    6·1 answer
  • Which of the following best explains velocity?
    8·1 answer
  • The ion with a +3 charge 28 electrons and mass number of 71
    5·2 answers
  • Which star is the dimmest HELP PLEASE
    14·2 answers
  • If 0.400 moles CO and 0.400 moles O2 completely react how many grams of CO2 are produces?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!