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
Mariana [72]
3 years ago
6

Fossil fuels are clean-burning fuels. true or false

Chemistry
2 answers:
fiasKO [112]3 years ago
6 0

Answer:

false

Explanation:

Fossils fuels are actually polluting the atmosphere therefore, it can not be a clean-burning fuel.

ExtremeBDS [4]3 years ago
4 0

Answer:

Energy cannot be converted from one form to another.

You might be interested in
When 70.4 g of benzamide (C7H7NO) are dissolved in 850. g of a certain mystery liquid X, the freezing point of the solution is 2
Arlecino [84]

Answer:

1.62

Explanation:

From the given information:

number of moles of benzamide  =\dfrac{70.4 \ g}{121.14 \ g/mol}

= 0.58 mole

The molality = \dfrac{mass \ of \ solute (i.e. \ benzamide )}{mass \ of \ solvent  }

= \dfrac{0.58 }{0.85 }

= 0.6837

Using the formula:

\mathbf {dT  = l   \times  k_f  \times m}

where;

dT = freezing point = 27

l = Van't Hoff factor = 1

kf = freezing constant of the solvent

∴

2.7 °C = 1 × kf ×  0.6837 m

kf = 2.7 °C/ 0.6837m

kf = 3.949 °C/m

number of moles of NH4Cl = \dfrac{70.4 \ g}{53.491 \  g /mol}

= 1.316 mol

The molality = \dfrac{1.316 \ mol}{0.85 \ kg}

= 1.5484

Thus;

the above kf value is used in determining the  Van't Hoff factor for  NH4Cl

i.e.

9.9 = l × 3.949 × 1.5484 m

l = \dfrac{9.9}{3.949 \times 1.5484 \ m}

l = 1.62

5 0
2 years ago
A nuclear fission reaction has mass difference between the products and the reactants of 0.0284 amu. Calculate the
notsponge [240]

Answer:

C) 4.24 x 10^{-12}

Explanation:

E = Δmc^{2}

Δm = 0.0284 x 1.66 x 10^{-27} kg = 4.714x10^{-29}kg

putting value in above equation

E = 4.714x10^{-29}kg x (3x10^{8})^{2} = 4.24 x 10^{-12}

6 0
2 years ago
I will give brainliest (8th grade)
lesya [120]

Answer:

2.The cooling effects of more indirect sunlight cause autumn and winter. Because of the Earth's approximately 23.5º tilt, the seasons in the Northern and Southern Hemispheres are reversed, about six months apart from each other.

3.In North America, around June 21, Earth tilts on its axis toward the Sun. That means that at the northern summer solstice, North America will experience summer, and winter will start in in the Southern Hemisphere. Winter Solstice. Around December 21, the Northern Hemisphere tilts the farthest away from the Sun.

Explanation:

3 0
2 years ago
BRAINLIESTTT ASAP!!! PLEASE HELP ME :)
lapo4ka [179]

Steps/Answers:

Jot down the metal name.

Write the metal name ending in -idle.

Combine cation, annion names,

Hope This Helps!       Have A Nice Day!!

5 0
3 years ago
What is known about a reaction with a positive enthalpy?
MariettaO [177]

Answer: C

Explanation:

In endothermic reactions, enthalpy is positive, and in exothermic reactions, enthalpy is negative, So, if enthalpy is positive, then it is an endothermic reaction, and hence is required for the reaction to occur.

8 0
2 years ago
Other questions:
  • What invention helped to contribute to the start of the civil war
    13·2 answers
  • 10. Which of state of matter has no definite shape but does have a definite volume?
    6·1 answer
  • Why can tin (IV) sulfide and antimony (III) sulfide be separated from copper (II) sulfide and bismuth (III) sulfide by the addit
    11·1 answer
  • AlCl3 and NaNO3<br> Balanced Equation<br> Total Ionic Equation<br> Net Ionic Equation
    13·1 answer
  • "a compound containing only carbon and hydrogen and which has only single bonds between atoms is classified as an"
    11·1 answer
  • How did Mendeleev organize the elements to create a periodic table?
    14·1 answer
  • NaOH + X ----&gt; NaCH3COO + H2O
    10·1 answer
  • Fan blades would be an analogy for which atomic model?
    14·1 answer
  • Help me help me please
    12·2 answers
  • Please answer this question please brianlest
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!