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
VashaNatasha [74]
3 years ago
5

12. Which of the following is a combustion reaction?

Chemistry
1 answer:
DochEvi [55]3 years ago
5 0

Answer:

A. CH4 + 202

+ CO2 + 2H2O

Explanation:

You might be interested in
How many significant numbers are there in 40.00
muminat

The answer to this is 4.

3 0
3 years ago
Read 2 more answers
A man walked 1560 meters in 16000 seconds what is the speed at which he walked
Maslowich
In what meters? miles an hour? i can’t answer unless i know that
5 0
2 years ago
A hot air balloon is filled with 15 moles helium gas and 5 moles nitrogen gas. What is the volume of the balloon at 1.01 atm and
kvasek [131]

<u>Given:</u>

Moles of He = 15

Moles of N2 = 5

Pressure (P) = 1.01 atm

Temperature (T) = 300 K

<u>To determine:</u>

The volume (V) of the balloon

<u>Explanation:</u>

From the ideal gas law:

PV = nRT

where P = pressure of the gas

V = volume

n = number of moles of the gas

T = temperature

R = gas constant = 0.0821 L-atm/mol-K

In this case we have:-

n(total) = 15 + 5 = 20 moles

P = 1.01 atm and T = 300K

V = nRT/P = 20 moles * 0.0821 L-atm/mol-K * 300 K/1.01 atm = 487.7 L

Ans: Volume of the balloon is around 488 L


3 0
3 years ago
Which of these statement(s) is/are true about a balloon filled with 1.00 mol N2 (g) at STP?
lara [203]

Answer:

I. The balloon has a volume of 22.4L

III. The balloon contains 6.022x10^23 molecules.

Explanation:

At stp, it has been proven that 1mole of a gas occupy 22.4L.

Therefore, option (i) is correct.

The molar mass N2 = 14.01 x 2 = 28.02g/mol

Number of mole of N2 = 1 mole

Mass of N2 =..?

Mass = mole x molar Mass

Mass of N2 = 1 x 28.02 = 28.02g.

The mass content of the balloon is 28.02g, therefore, option (ii) is wrong.

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02x10^23 molecules. This implies that 1 mole of N2 also contains 6.02x10^23 molecules

Therefore, option (iii) is correct.

The correct options to the question are:

Option i and option iii

7 0
3 years ago
Read 2 more answers
7). Which material has the highest melting point? A. ammonia B. methane C. sodium chloride D. water .with explanation every opti
Arte-miy333 [17]

Answer:

sodium chloride

Explanation:

Because of the strong ionic bonds it possesses

8 0
2 years ago
Other questions:
  • What type of mixture is 100 ml of water with a little bit of salt?
    8·1 answer
  • What is the meaning of the following metric prefixes kilo,deco,centi,milli,micro and nono
    11·1 answer
  • Carbon-14 emits beta radiation and decays with a half-life (t ) of 5730 years. Assume that you start with a mass of 6.00 × 10^–1
    6·2 answers
  • Name three differences between a rock and a mineral
    13·2 answers
  • if you could place a piece of solid silver into a container of liquid silver, would it float or sink? Explain your answer
    9·2 answers
  • The reduction of iron(III) oxide (Fe203) to pure iron during the first step of steelmaking,
    7·1 answer
  • Is an element with 6 elecrons, 6 protons and 6 neutroms an atom, ion or isotope​
    9·2 answers
  • What type of atmospheric conditions does weather describes
    11·1 answer
  • When an object such a a stone is dropped into water, it disturbs the surface of the water. Waves form at the surface of the wate
    12·1 answer
  • What is the name of the anion in sodium carbonate?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!