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
makvit [3.9K]
3 years ago
14

In the mid-1900s, most scientists used the Bohr atomic model to study atoms. In the Bohr model, electrons move in set paths arou

nd the atom's nucleus.
In current atomic models, electron clouds are shown around the atom's nucleus. Electron clouds are regions where electrons are likely to be found.

What is a limitation of current atomic models as compared to the Bohr atomic model?

A. Current atomic models do not indicate the position of the nucleus within the atom's structure.

B. Current atomic models do not show how many electrons an atom has.

C. Current atomic models do not show where the electron is but only where the electron is likely to be.
Chemistry
2 answers:
patriot [66]3 years ago
7 0

Answer:

The answer is C.

Explanation:

Novosadov [1.4K]3 years ago
5 0
The answer is c beca it true
You might be interested in
Ssdfdjfdngndfdjggjxgjnxdòò
AveGali [126]

Answer:

ok

Explanation:

5 0
2 years ago
Please help with an easy percentage yield question ASAP!!! Would really appreciate!
Brut [27]

Answer:

The mass percentage yield is 85%

Explanation:

<u>Step 1: </u>The balanced equation

2 C7H6O3 +  (CH3CO)2CO → 2 C9H8O4 + H20

<u>Step 2</u>: Given data

mass of salicylic acid = 1.03 grams

Volume of acetic anhydride = 2.00 mL = 2*10^-3 L

The product is 1.16 g aspirin synthesized

Molar mass of salicylic acid = 138.12 g/mole

Molar mass of aspirin = 180.16 g/mole

Density of acetic anhydride = 1.0820 g/mL

<u>Step 3</u>: Calculated moles of salicylic acid

Number of moles of salicylic acid = mass of salicylic acid / Molar mass of salicylic acid

Number of moles of salicylic acid = 1.03 grams / 138.12 g/mole

Number of moles of salicylic acid =0.0075 moles

Step 4: Calculated mass acetic anhydride

mass of acetic anhydride = 1.0820 g/mL * 2 mL = 2.164 grams

Step 5: Calculate number of moles of acetic anhydride

Number of moles = 2.164 grams / 102.09 g/moles

Number of moles = 0.0212 moles

<u>Step 6</u>: Find amount of reacting moles

C7H6O3 is the limiting reactant, there will react 0.0075 moles

Since for 2 moles C7H6O3 consumed, we need 1 mole of (CH3CO)2CO to produce 2 moles of C9H804

So for 0.0075 moles C7H6O3 consumed, we produce 0.0075 moles of C9H8O4

<u>Step 7</u>: Calculate mass of aspirin

mass of aspirin = 0.0075 moles * 180 g/mole = 1.35 grams

<u>Step 8:</u> Calculate the mass percentage yield

(1.16 grams / 1.35 grams) * 100% = 85 %

The mass percentage yield is 85%

7 0
3 years ago
H e l p,,, ill give brainliest :)
mote1985 [20]

Hi there! :)

Both are compounds.

CO_{2} contains 1 carbon (C) atom and 2 oxygen (O)  atoms.

It contains two different elements, so it is a COMPOUND.

Na_{2} O is an IONIC compound with elements Sodium (Na) and Oxygen (O), which are different elements. Therefore, it is also a COMPOUND.

6 0
2 years ago
What is the answer to-6 + 1 = -5/
Jlenok [28]
-6+1= -5
-5 is the true answer
4 0
3 years ago
The part in the middle with a coil of wire wrapped around a metal shaft is part of an electric motor. What is it?
evablogger [386]

Answer:

  rotor

Explanation:

The part of the motor being pointed to is called the <em>rotor</em>.

4 0
3 years ago
Read 2 more answers
Other questions:
  • A box is resting on a table. If an applied is _____ the frictional force, the box Will move sideways along the table
    15·1 answer
  • The length of a copper wire is 1.6 centimeters (cm). What is the length of this wire in meters (m)?
    12·1 answer
  • According to cell theory, what do these four organisms have in common? A) They are made of one or more cells. B) They must under
    12·1 answer
  • How are baby’s produced.
    10·2 answers
  • Can someone help me
    8·2 answers
  • I have a question, what does a man have to do to get the love of his life.
    6·1 answer
  • Which chemical equation represents a precipitation reaction?
    6·1 answer
  • The electronegativities of carbon and sulfur are almost the same. Both elements form covalently bonded compounds with hydrogen.
    12·1 answer
  • If you have a sample of a solid with a mass of 48.2 g and a density of 14.3 g/cm3, what would the volume be? (round you answer t
    5·1 answer
  • El agua de lluvia tiene un pH de 4,00. Calcule su concentración de ion hidrógeno en mol/litro. Explique por qué el agua es ácida
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!