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
leva [86]
3 years ago
12

1 How is the density of a substance calculated? 

Chemistry
1 answer:
user100 [1]3 years ago
4 0
Sorry for the scribbles lol

You might be interested in
Label the signals due to ha, hb, and hc in the 1h nmr spectra.
trapecia [35]
Structure along with ¹H-NMR is shown below.

Signal for Hₐ;
                     Based on multiplicity of of the peak, a Singlet peak (the only singlet peak present in spectrum) at 2.2 ppm was assigned to Hₐ. As the methyl group in not coupling with any other proton so it gave a singlet peak.

Signal for Hb;
                     Based on multiplicity of of the peak, a Quartet peak (the only quartet peak present in spectrum) at 2.4 ppm was assigned to Hb. As the methylene group in coupling with methyl group having three protons so it gave a Quartet peak.

Signal for Hc;
                     Based on multiplicity of of the peak, a Triplet peak (the only triplet peak present in spectrum) at 1.1 ppm was assigned to Hc. As the methyle group in coupling with methylene group having two protons so it gave a Triplet peak.

3 0
3 years ago
5 Which two elements are combined in magnesium oxide?
Vitek1552 [10]

Answer:

magnesium and oxygen

Explanation:

6 0
3 years ago
Fusion reactions constitute the fundamental energy source of stars, including the Sun. Hydrogen “burning” initiates the fusion e
AfilCa [17]

Answer:

C)  The most efficient fusion reactors would use heavier forms of hydrogen.

Explanation:

From the information presented to us in the question, the third sentence reveals that heavier forms of hydrogen produces larger amount of energy and most importantly reacts more efficiently when fusion occurs.

<em>In fact, the </em><u><em>heavy isotopes of hydrogen—deuterium and tritium—react more efficiently</em></u><em> with each other, and, when they do undergo fusion, they yield more energy per reaction than do two hydrogen nuclei. </em>

3 0
3 years ago
Pls predict and balance the following Chemical equations 30points (5 per question)
maria [59]

Answer:

1. Na2SO4 + Ba(NO3)2 → NaNO3 + BaSO4

2. NaNO3 + NH4Cl → NaCl + NH4NO3

4. Sorry, I don't know

5. Refer to the attachment..

6. NaC2H3O2(aq) + AgNO3(aq) = NaNO3(aq) + AgC2H3O2

<h3>Hope it can help you and please mark me as a brainlist... </h3>

\huge{\blue{Thank  \: you}}

5 0
3 years ago
Read 2 more answers
BRAINLIEST IF CORRECT
PSYCHO15rus [73]

Answer:

D) All Of The Above

Explanation:

There are five main modes of seed dispersal: gravity, wind, ballistic, water, and by animals.

Some plants are serotinous and only disperse their seeds in response to an environmental stimulus.

MARK THIS ANSWER AS THE BRAINLIEST PLEASE ❤️

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following theories provides information concerning both molecular shape and molecular bonding?
    9·1 answer
  • Polyesters are formed from the reaction of __________.
    13·1 answer
  • Predict the mass of iron (III) sulfide produced when 3.0 g of iron filings react completely with 2.5 g of yellow sulfur solid, S
    14·2 answers
  • 15 POINTS!!!!!!
    10·2 answers
  • When the volume of a gas is changed from 11.5 cm3 to ?cm the temperature will change from 415 K to 200 K
    9·1 answer
  • What is the [OH-] of a substance that has a pH of 11?
    5·1 answer
  • During the process of nuclear decay what form of energy is released?
    15·1 answer
  • Select the correct statement.
    8·1 answer
  • Need help ASAP!
    6·1 answer
  • What is the force that holds atoms together
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!