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
laiz [17]
4 years ago
9

Write a balanced combustion reaction for C2H2 (acetylene). How did you know which products should be formed? Explain your reason

ing.
Chemistry
1 answer:
lesya [120]4 years ago
8 0
Most of the organic compunds burn to give CO2 and H2O

2C2H2 + 5O2 =  4CO2+ 2H2O

:)
You might be interested in
In a thin layer chromatography experiment, a plate of length 9.3 cm was used and a horizontal line was made at 1.45 cm above the
dezoksy [38]

Answer: The R_f value is 0.664

Explanation:

Distance travelled by solvent front = (7.7-1.45)cm = 6.25 cm

Distance travelled by unknown = (5.6-1.45) cm = 4.15 cm

 The retention factor or the R_f value is defined as the ratio of distance traveled by the unknown to the distance traveled by the solvent front.

R_f=\frac{\text {distance travelled by unknown}}{\text {distance travelled by solvent}}

R_f=\frac{4.15}{6.25}=0.664

Thus the R_f value is 0.664

6 0
3 years ago
The decay of a living things allows chemical elements to be lost.
Lelu [443]

Answer: is is true

Explanation:

8 0
2 years ago
A fossil was analyzed and determined to have a carbon-14 level that is 70 % that of living organisms. The half-life of C-14 is 5
Citrus2011 [14]

Answer: 2948

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

t_{\frac{1}{2}}=\frac{0.693}{k}

k=\frac{0.69}{t_{\frac{1}{2}}}=\frac{0.693}{5730}=1.21\times 10^{-4}years^{-1}

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 1.21\times 10^{-4}years^{-1}

t = age of sample  = ?

a = let initial amount of the reactant  = 100

a - x = amount left after decay process = \frac{70}{100}\times 100=70

t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{70}

t=2948years

Thus the fossil is 2948 years old.

5 0
3 years ago
Copper can be shaped into wires because it is
Lelechka [254]

.ANSWER:Copper is a ductile metal

EXPLAIN :This means that it can easily be shaped into pipes and drawn into wires. Copper pipes are lightweight because they can have thin walls. They don't corrode and they can be bent to fit around corners.

7 0
3 years ago
Molar mass is measured in units of
blsea [12.9K]
D. grams/ mole.
........
5 0
3 years ago
Other questions:
  • The slant of the earth is called what
    11·2 answers
  • 1. The reaction below describes cellular respiration. Which compounds are the reactants and which are the
    5·1 answer
  • Which force is a noncontact force
    14·1 answer
  • A student states that an exothermic chemical reaction can transfer its heat only by convection and conduction. Which disproves t
    5·2 answers
  • Which planet has more gravitational pull
    15·1 answer
  • Which of the following week s NOT an organic molecule CH4, C6H12O6, HCI, C3H7CI
    15·1 answer
  • If a 28.0 L balloon with a temperature of
    15·1 answer
  • Can anyone explain this to me?
    14·1 answer
  • The a-helices and b- sheets in protein make up its
    15·1 answer
  • Write down the procedure for the test of presence of nitrogen in organic compound
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!