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
Tcecarenko [31]
3 years ago
11

What is the name of the renewable fuel use in Brazil that help to conserve petroleum resources

Chemistry
1 answer:
julia-pushkina [17]3 years ago
4 0

the answer you're looking for is...

d) ethanol

You might be interested in
The difference in hydrogen ion concentration between solutions with ph4 and ph5 is
jonny [76]
I think the answer is tenfold

hope this helps :)
4 0
3 years ago
A molecule that oxidized gains electrons and energy. true or false
quester [9]
I suppose it false, since the oxidation involves the loss or removal of the electrons such forth it does not gain electrons.
5 0
4 years ago
What structure is found in some but not all plant cells
AlekseyPX
The chloroplasts i believe is the answer
5 0
3 years ago
Read 2 more answers
The reaction of Pb+4 and O-2 produces the compound of
vovikov84 [41]

Answer:

Pb₂O₄

                               

Explanation:

The given species are:

        Pb⁴⁺               O²⁻  

Now, to solve this problem, we use the combining powers which corresponds to the number of electrons usually lost or gained or shared by atoms during the course of a chemical combination.

                                          Pb⁴⁺               O²⁻  

Combining power               4                    2

Exchange of valencies        2                    4

Now the molecular formula is  Pb₂O₄

                               

4 0
3 years ago
A compound with molecular formula C6H15N exhibits a singlet at d 0.9 ppm (1H), a triplet at 1.10 ppm (3H), a singlet at 1.15 ppm
Triss [41]

Answer:

CH3 - CH2 - NH - C(CH3)3

Explanation:

The 1HNMR is the acronym for Proton nuclear magnetic resonance and it is used in chemistry or Chemical laboratory for the analysis and identification of compounds.

In order to be able to answer the question accurately you have to have the tables containing all the values for chemical shift. The Chemical shift is measured in ppm and it occur due to Resonance frequency variation.

From the table, a singlet at 1.15 ppm (9H) is - C(CH3)3.

A singlet at d 0.9 ppm (1H) shows the presence of a secondary amine group, that is -R2NH group.

A triplet at 1.10 ppm (3H) shows that we have;

CH3- CH2-

A quartet at 2.6 ppm (2H) shows that we have;

-CH2 - CH3.

Therefore, joining all together we have;

CH3 - CH2 - NH - C(CH3)3.

Kindly check attached file for the picture of the structure.

5 0
3 years ago
Other questions:
  • Properties of group 7 (aka. The Halogens)?
    6·1 answer
  • Calculate the volume in milliliters of a 5.55-g sample of a solid with a density of 3.03 g/mL
    13·1 answer
  • Why is a ylid a stable nucleophile? Select all that apply. Group of answer choices The proximity of the positively charged phosp
    6·1 answer
  • Histamines are an important chemical in the body . what is their purpose in the immune system
    10·1 answer
  • What would happen if they had no sunlight???
    5·2 answers
  • A chemical reaction was carried out by mixing 25 g of pure CaCO3 and 0.75 mole of pure HCl to give CaCl2, H2O and CO2. a. Which
    11·1 answer
  • Which reaction will most likely take place based on the activity series? Li > K Ba CaNa > Mn > Zn > Cr> Fe> Cd
    5·1 answer
  • 15. An increase in atomic number is related to an increase in atomic mass because
    8·1 answer
  • Where do molecules humans need come from
    12·1 answer
  • Can someone help me please. Will mark brainliest!<br> Which equation shows an increase in entropy?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!