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
GenaCL600 [577]
3 years ago
15

When humans burn fuel or cut down trees, they ( increased or decrease) levels

Chemistry
1 answer:
Sedbober [7]3 years ago
6 0
Its b it decreases u lose more u lose more fuel and u r hurting the environment when u cut down trees
You might be interested in
Which of the following is not an indication of a chemical reaction?
lakkis [162]
A substance freezes.  
8 0
3 years ago
Read 2 more answers
Please help quickly!
9966 [12]
Answer: c
that is the answer
5 0
2 years ago
What is the percent yield if 107.50 g NH3 reacts with excess O2 according to the
Maksim231197 [3]

Answer:

81.59%

Explanation:

  • 4NH₃ + 5O₂ → 4NO + 6H₂O

First we <u>convert 107.50 g of NH₃ into moles</u>, using its <em>molar mass</em>:

  • 107.50 g NH₃ ÷ 17 g/mol = 6.32 mol NH₃

Now we <u>calculate how many moles of NO would have been formed by the complete reaction of 6.32 moles of NH₃</u>:

  • 6.32 mol NH₃ * \frac{4molNO}{4molNH_3} = 6.32 mol NO

Then we <u>convert 6.32 moles of NO to grams</u>, using its <em>molar mass</em>:

  • 6.32 mol NO * 30 g/mol = 189.60 g NO

Finally we <u>calculate the percent yield</u>:

  • 154.70 g / 189.60 g * 100% = 81.59%

8 0
3 years ago
Within the nuclear us of individual Adams of the same element, the proton number
AnnyKZ [126]

the same

Explanation:

Within the nucleus of individual atoms of the same element, the proton number is the same.

All atoms of the same kind from the same element have the same number of protons.

The number of protons does not change, it remains fixed after a chemical reaction.

Different elements have different number of protons that typifies and makes them unique.

But atoms of the same element have the same number of protons in them.

learn more;

Atomic number brainly.com/question/5425825

#learnwithBrainly

4 0
3 years ago
Which description of salt is a physical property? (2 points)
jarptica [38.1K]

Product of mixing acids and bases describes salt is a physical property.

Product of mixing acids and bases

<u>Explanation:</u>

When an acid and a base are put together, they respond to kill the corrosive and base properties, creating a salt which portrays the physical property. The physical properties of table salt will be: Salt is a white cubic gem. At the point when the salt is unadulterated it clear.

It likewise shows up in white, dim or caramel shading relying on immaculateness. It is unscented yet has a solid salty taste. Fundamental salts contain the conjugate base of a feeble corrosive, so when they break down in the water, they respond with water to yield an answer with a pH more than 7.0.

8 0
3 years ago
Other questions:
  • Write briefly how oxygen gas is prepared in the industry​
    6·1 answer
  • How fast do you think the air particles in this room are moving compared to a car going 50 mph (about 22m/s)? Put your answer is
    11·1 answer
  • Name the element in the fourth period of the periodic table with six 4p electrons.
    12·1 answer
  • What is the speed of the silver sphere at the moment it hits the ground? (Assume that energy is conserved during the fall and th
    12·1 answer
  • What is one observation you can make aboit venus​
    8·1 answer
  • The pressure of sulfur dioxide in a container is 159 kpa. what is this pressure in atmospheres?
    9·1 answer
  • What is the difference between an acid and a base? Give an example of each.
    11·1 answer
  • What is a derived lipid
    9·2 answers
  • Define the terms (a) sedimentation ( b )decantation​
    8·2 answers
  • What can you determine about the feasibility of a reaction if the enthalpy is positive and
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!