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
Butoxors [25]
3 years ago
9

Use scientific notation to express the number 355000 to:

Chemistry
1 answer:
Juli2301 [7.4K]3 years ago
6 0
Six significant figures
You might be interested in
in 1912, chemist fritz haber developed a process that combined nitrogen from the air with hydrogen at high temperatures and pres
Virty [35]
Explain whether this is a chemical or physical change, and why. does it involve elements, compounds, mixtures, or pure substances?

If the process involves a chemical reaction then surely it is a chemical change where new bonds are being formed from the collision of the reactants.

Describe how many atoms are involved before and after. what do you notice about the number of atoms?

From the balanced chemical reaction, we see that we need 1 mol of N2 gas and 3 mol of H2 in order to form 2 mol of NH3.
3 0
3 years ago
An unknown compound displays singlets at δ 2.1 ppm and 2.56 ppm in the ratio of 3:2. what is the structure of the compound?
olasank [31]

1) As can be seen from any 1H NMR chemical shift ppm tables, hydrogens which have δ values from 2ppm to 2.3ppm are hydrogens from carbon which is bonded to a carbonyl group. From this, we can conclude that our hydrogens belong to the type, but from 2 different alkyl groups because of 2 different signals.

 

2) So, one alkyl group is CH3 and second one can be CH or CH2.

 

3) If we know that ratio between two types of hydrogens is 3:2, it can be concluded that second alkyl group is CH2. 


4) Finally, we don't have any other signals and it indicates that part of the compound which continues on CH2 is exactly the same as the first part.

The ratio remains the same, 3:2 ie 6:4

7 0
3 years ago
Which part of Earth most likely has the highest albedo value?
andre [41]
Uhhh pretty sure B


Happy New Years
3 0
3 years ago
Which of the following is a type of physical change.
trapecia [35]

Answer:

B. a change in their state or substance

Explanation:

A change of state consists of a physical process in which the structure of the substance changes, its appearance. EXAMPLE: in the merger, the solid state becomes liquid, changes the rearrangement of particles from being highly compacted to being less compact.

6 0
3 years ago
Which one is nonspecific defense of the body
lions [1.4K]
A. Skin
Hope it helps!
8 0
3 years ago
Other questions:
  • HELP
    10·2 answers
  • Calculate the average bond order for a p−o bond (such as the one shown in blue) in a phosphate ion. express your answer numerica
    15·1 answer
  • Calculate [OH−] for each solution.
    8·1 answer
  • A 2 L container contains 5 moles of helium gas at 0.5 atm. What is the<br> temperature of the gas?
    5·1 answer
  • When boiling a pot of water on the stove without a lid on the pot, the _____________. A energy and water molecules are free to e
    13·2 answers
  • Plz answer this i will mark brainly like and ratr
    15·1 answer
  • A rock climbing group reached the top of Mount Everest in the Himalayan mountains. Mount Everest is about 29,000 feet above sea
    5·1 answer
  • What is crucial in the formation of metamorphic rock?
    9·1 answer
  • Hurry i only have till today to finsh this!
    8·2 answers
  • Guys I know this is not an educational question, but guess what? &gt;.&gt;
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!