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
Finger [1]
3 years ago
12

ASAP HELP

Chemistry
2 answers:
jeyben [28]3 years ago
7 0

Answer:

the answer is 2.75 but since that isn't an option I'd go with 1 because I just took a test with this question and it was the right answer.. hopefully that helps

BabaBlast [244]3 years ago
6 0

Answer:

2.75

Explanation:

You might be interested in
The freezing point of ethanol, CH3CH2OH, is -117.300 °C at 1 atmosphere. Kf(ethanol) = 1.99 °C/m
MAXImum [283]

Answer : The molecular weight of this compound is 891.10 g/mol

Explanation :  Given,

Mass of compound = 12.70 g

Mass of ethanol = 216.5 g

Formula used :  

\Delta T_f=i\times K_f\times m\\\\T_f^o-T_f=i\times T_f\times\frac{\text{Mass of compound}\times 1000}{\text{Molar mass of compound}\times \text{Mass of ethanol}}

where,

\Delta T_f = change in freezing point

T_f^o = temperature of pure ethanol = -117.300^oC

T_f = temperature of solution = -117.431^oC

K_f = freezing point constant of ethanol = 1.99^oC/m

i = van't hoff factor = 1   (for non-electrolyte)

m = molality

Now put all the given values in this formula, we get

(-117.300)-(-117.431)=1\times 1.99^oC/m\times \frac{12.70g\times 1000}{\text{Molar mass of compound}\times 216.5g}

\text{Molar mass of compound}=891.10g/mol

Therefore, the molecular weight of this compound is 891.10 g/mol

7 0
3 years ago
Evaluate this dimensional analysis setup. A paperclip is 3.2 cm long. How many paperclips would fit in
Alika [10]

Answer:

100 yard = 9144 centimeters

9144 / 3.2 = 2,8575 round off

= 2,858 paperclips

Explanation:

3 0
3 years ago
Read 2 more answers
Help! The question is in the picture
Ronch [10]

Answer:

little l big l big l little l

Explanation:

can you help me Complete the following sentence: After we explained why we needed her in the play, she and joined our rehearsal A quaffed B. acquiesced C vengeance D. wreaked

4 0
3 years ago
Chromatography and fractional distillation can be used to separate compounds.
Finger [1]

Answer:

fractionao distillation of two colourless liquids

3 0
2 years ago
To calculate the density of a sample of matter,you must divide it_____ by its______.
Ymorist [56]
I think it is voulume and total mass
8 0
3 years ago
Other questions:
  • Explain why the lattice energy of CaSe is approximately 4 times as large as that of KBr. Check all that apply. Check all that ap
    14·1 answer
  • CNC NaCl HCL are all classified as
    15·1 answer
  • if a solution measured with the miscalibrated meter (above) gave a reading of 6.50 at 20oC, what should be the true pH (give 2 d
    13·1 answer
  • What type of base is defined as a substance that forms hydroxide ions (OH-) in water?
    11·2 answers
  • Name the following ester molecule:
    9·1 answer
  • Can u pls help me with this question ​
    10·2 answers
  • 5 meters
    5·1 answer
  • Is selenium tetrafluoride an ionic or covalent bond?
    13·1 answer
  • Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. An industrial ch
    15·1 answer
  • Help please, please,please. ....​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!