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
Yanka [14]
2 years ago
15

The percentage of carbon dioxide in the atmosphere has increased in the last century and is a concern for the environment as it

increases the greenhouse effect. Give one possible explanation for the increase of carbon dioxide in the atmosphere
Chemistry
1 answer:
erma4kov [3.2K]2 years ago
5 0
When fossil fuels are burned for energy, carbon that was sequestered underground is being released again into the atmosphere.
You might be interested in
Why does earth have uranium
Rainbow [258]
The isotope U-235 is important because under certain conditions it can readily be split, yielding a lot of energy. It is therefore said to be 'fissile' and we use the expression 'nuclear fission'. Meanwhile, like all radioactive isotopes, they decay.
5 0
3 years ago
Read 2 more answers
3. If you start with 8x1025 molecules of Cl, and 25 grams of KI, how many grams of KCl would
miskamm [114]

Answer:

Percent yield = 89.1%

Explanation:

Based on the equation:

Cl₂ + 2KI → 2KCl + I₂

<em>1 mole of Cl₂ reacts with 2 moles of KI to produce to moles of KCl</em>

<em />

To solve this quesiton we must find the moles of each reactant in order to find the limiting reactant. With the limiting reactant we can find the moles of KCl and the mass:

<em>Moles Cl₂:</em>

8x10²⁵ molecules * (1mol / 6.022x10²³ molecules) = 133 moles

<em>Moles KI -Molar mass: 166.0028g/mol-</em>

25g * (1mol / 166.0028g) = 0.15 moles

Here, clarely, the KI is the limiting reactant

As 2 moles of KI produce 2 moles of KCl, the moles of KCl produced are 0.15 moles. The theoretical mass is:

0.15 moles * (74.5513g / mol) =

11.2g KCl

Percent yield is: Actual yield (10.0g) / Theoretical yield (11.2g) * 100

<h3>Percent yield = 89.1%</h3>
3 0
3 years ago
Chem help<br>calculate the wavelength of an electromagnetic wave with a frequency of (in pic)​
olchik [2.2K]

we have,

wavelenght=c/f

where c= 3×10^8 m/s

f=6.3×10^12 s^-1

so wavelength=(3×10^8)/(6.3×10^12)

=0.476×10^-4 m

4 0
3 years ago
What is the mass of a ink pen with triple beam balance
Gnesinka [82]
The mass of an ink pen with a triple beam balance if all the weights positioned to the right would be a maximum of 610 grams which sounds rather heavy for an ink pen but in the absence of necessary information it seems that that would have to be the answer.
7 0
3 years ago
Is 0.297 cg the same as 2.97 milligrams
satela [25.4K]
Yes, they are the same. They are equivalent.
4 0
3 years ago
Other questions:
  • The neutralization reactions always produced which compound?
    5·1 answer
  • What is the molarity of an H2SO4 solution if 49.0 mL are titrated by 68.4 mL of a .333 M NaOH solution
    12·1 answer
  • The longer the reaction time is, the the reaction rate is. Reaction time is to reaction rate.
    10·2 answers
  • What is the pH of a bleach solution that has a [OH−]=1.3×10−4 M?
    14·1 answer
  • CHEMISTRY HELP! Lewis structure rules<br><br> Please help, is this correct?
    7·1 answer
  • Is Boiling water a chemical or physical change?
    13·1 answer
  • sedimentary rocks that are formed from physical/chemical process within the earth are given the general name of
    9·2 answers
  • g The following equation is given for the dissociation of the complex ion Ag(NH3) 2. The dissociation constant, Kd, is the equil
    8·1 answer
  • Element X is in group 2, and element Y is in group 7, of the periodic table. which ions will be present in the compound formed w
    11·1 answer
  • Predict the products of the reaction below
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!