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
melisa1 [442]
3 years ago
9

Air is mainly a mixture of nitrogen and oxygen. Which gas is the main component?

Chemistry
2 answers:
NARA [144]3 years ago
8 0

Answer:

Nitrogen is the main component because it comprises 78% of total air while oxygen comprises 21%

.

Cloud [144]3 years ago
8 0

Answer:nitrogen

Explanation:

You might be interested in
25 g of a chemical is dissolved in 75 g of water. What is the percent by mass concentration of this chemical
Zanzabum

Answer:

300

Explanation:

4 0
2 years ago
The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol. How much energy is produced by burning 0.8210 g
bazaltina [42]

The energy produced by burning : -32.92 kJ

<h3>Further explanation</h3>

Delta H reaction (ΔH) is the amount of heat change between the system and its environment

(ΔH) can be positive (endothermic = requires heat) or negative (exothermic = releasing heat)

The enthalpy and heat(energy) can be formulated :

\tt \Delta H=\dfrac{Q}{n}\rightarrow n=mol

The enthalpy of combustion of naphthalene (MW = 128.17 g/mol) is -5139.6 kJ/mol.

The energy released for 0.8210 g of naphthalene :

\tt Q=\Delta H\times n\\\\Q=-5139.6~kJ/mol\times \dfrac{0.8210~g}{128.17~g/mol}~\\\\Q=-32.92~kJ

3 0
3 years ago
How to do balance chemical equiations
alex41 [277]
Hey, lovely! It's a pretty lengthy process but here is a pretty clear video on how to do it. Hope this helps ya!

https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/balancing-chemical-equat...

4 0
4 years ago
HELP WITH A THESIS STATEMENT
lina2011 [118]

The second thesis statement is perfect. It supports the claim and presents main idea.

4 0
3 years ago
80 POINTS!!! ALL PLATO USERS: asap!!!
Crank

This year course engages students in becoming skilled readers of prose written in a variety of periods, disciplines, and

rhetorical contexts and in becoming skilled writers who compose for a variety of purposes. More immediately, the course

prepares the students to perform satisfactorily on the A.P. Examination in Language and Composition given in the spring.

Both their writing and their reading should make students aware of the interactions among a writer’s purposes, audience

expectations, and subjects as well as the way generic conventions and the resources of language contribute to effectiveness

in writing. Students will learn and practice the expository, analytical, and argumentative writing that forms the basis of

academic and professional writing; they will learn to read complex texts with understanding and to write prose of

sufficient richness and complexity to communicate effectively with mature readers. Readings will be selected primarily,

but not exclusively, from American writers. Students who enroll in the class will take the AP examination.

4 0
3 years ago
Other questions:
  • Silver has two naturally occurring isotopes with the following isotopic masses: 47Ag 107 – 106.90509 47Ag 109 – 108.9047 The ave
    10·1 answer
  • Write a balanced equation for decomposition of H2CO3
    6·1 answer
  • Which one of the following is not a compound?
    5·2 answers
  • As a technician in a large pharmaceutical research firm, you need to produce 300. mL of 1.00 M a phosphate buffer solution of pH
    6·1 answer
  • Gaseous methane (CH₄) reacts with gaseous oxygen gas (O₂) to produce gaseous carbon dioxide (CO₂) and gaseous water (H₂O) If 0.3
    14·1 answer
  • Give me Investigating questions that have dependent variable independent variable and control variable
    7·1 answer
  • An element's ability to react with acid is an example of a
    15·1 answer
  • Lucky charms <br>A. Element <br>B. Compound <br>C.Homogeneous Solution D.Heterogeneous​
    12·1 answer
  • QUESTION 10
    6·2 answers
  • Which of these elements is the most ductile?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!