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
kow [346]
2 years ago
5

Regulations on air pollutants in the United States and other countries since the 1970s have greatly reduced the amount of CO2 em

issions. True False
Chemistry
2 answers:
Lynna [10]2 years ago
7 0

True.

Because some people breathe less pollution and face lower risks of premature death and other serious health

Kisachek [45]2 years ago
4 0

Its false it increased by 75% in the 70s hope i helped

You might be interested in
A rock is found to have a mass of 200 g and a volume of 100 ml. what is the rock's density?
GaryK [48]
Mass over volume
200 over100
2
4 0
3 years ago
The region in which an electron is likely to be found is known as a(n) ____________.
Zinaida [17]

Answer:

orbital

Explanation:

electrons are found in an orbital

3 0
2 years ago
The first-order rearrangement of CH3NC is measured to have a rate constant of 3.61 x 10-15 s-1 at 298 K and a rate constant of 8
laiz [17]

Answer:

The correct answer is 160.37 KJ/mol.

Explanation:

To find the activation energy in the given case, there is a need to use the Arrhenius equation, which is,  

k = Ae^-Ea/RT

k1 = Ae^-Ea/RT1 and k2 = Ae^-Ea/RT2

k2/k1 = e^-Ea/R (1/T2-1/T1)

ln(k2/k1) = Ea/R (1/T1-1/T2)

The values of rate constant k1 and k2 are 3.61 * 10^-15 s^-1 and 8.66 * 10^-7 s^-1.  

The temperatures T1 and T2 are 298 K and 425 K respectively.  

Now by filling the values we get:  

ln (8.66*10^-7/3.61*10^-15) = Ea/R (1/298-1/425)

19.29 = Ea/R * 0.001

Ea = 160.37 KJ/mol

3 0
3 years ago
What types of reactions are these 3 chemical equations?-
IceJOKER [234]

Answer:

*2Kl+Pb(NO3)2=PbI2+2KNO3: double replacement.

*2Al+3CuSO4=Al2(SO4)3+3Cu: single replacement.

*C2H5OH+3O2=2CO2+3H2O: combustion.

Explanation:

Hello there!

In this case, according to the required, it turns out necessary for us to recall the five types of reactions, combination, decomposition, single and double replacement and combustion as shown on the attached figure.

In such a way, since the first reaction follows the pattern AB+CD-->AD+CB we infer it is double replacement; the second reaction follows the patter A+BC-->AC+B and therefore it is single replacement; and the last one follows the pattern of combustion reaction due to the presence of CO2 and H2O on the products side.

Regards!

3 0
3 years ago
if an unknown sample solution is prepared by diluting 10.00 ml of the original solution to a total volume of 100.0 ml with deion
Usimov [2.4K]

The dilution factor of the unknown sample is 10. The dilution factor of a solution refers to the ratio of the final volume of the now diluted solution to the initial volume of the of the initial concentrated solution.

Mathematically;

The dilution factor is given by the formula;

Dilution factor = Final volume of the now diluted solution/ Initial volume of more concentrated solution

Final volume of the now diluted solution = 100.0 ml

Initial volume of more concentrated solution = 10.00 ml

Dilution factor = 100.0 ml/10.00 ml

Dilution factor =  10

Learn more: brainly.com/question/20113402

6 0
2 years ago
Other questions:
  • If sodium sulfate was added to the mixture containing silver ions and the yellow precipitate, what might be observed after a sig
    15·1 answer
  • You probably already know the names of some molecules. Identify which compound (water, salt, carbon dioxide, or methane) corresp
    7·2 answers
  • The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of sodium azide, which produces
    12·1 answer
  • Which of the following statements is true?
    9·1 answer
  • How can two atoms of the same chemical element be different?
    8·1 answer
  • How does ph affect photosynthesis?
    8·1 answer
  • What type of bond is formed when atoms share electrons?
    7·1 answer
  • How many liters of oxygen are required to react completely with 1.2 liters of hydrogen to form water? 2H2(g) + O2(g) → 2H2(g)
    15·1 answer
  • How metals have been used thorough the ages PLS
    7·1 answer
  • Express the frequency in inverse seconds. n=5-->n=1
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!