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
nika2105 [10]
3 years ago
5

The modern atomic model includes electrons orbiting the nucleus. which of the following parts of dalton's atomic model was dispr

oved by the discovery of the electron?
- atoms are tiny particles. - atoms cannot be divided into smaller parts . - atoms have specific mass and size. - atoms have specific chemical properties. i think its number 2?
Chemistry
1 answer:
lana66690 [7]3 years ago
7 0
Atom can never be divided into smaller particles is the answer was disproved
You might be interested in
The pKa of the α‑carboxyl group of serine is 2.21 , and the pKa of its α‑amino group is 9.15 . Calculate the average net charge
sleet_krkn [62]

Answer:

Net charge in serine at pH equal to 8.30 is "0"

Explanation:

  • At pH > pK_{a}, carboxyl group exists as -CO_{2}^{-} (charged)
  • At pH < pK_{a}, carboxyl group exists as -COOH (neutral)
  • At pH > pK_{a}, amino group exists as -NH_{2} (neutral)
  • At pH < pK_{a}, amino group exists as -NH_{3}^{+} (charged)
  • So, at pH = 8.30, both carboxyl and amino group exists in charged state.
  • Net charge in serine at pH equal to 8.30 is "0".
  • Structure of serine at pH equal to 8.30 has been shown below.

8 0
3 years ago
Which of the following is the best reference for more information regarding compounding?
stiks02 [169]

Compounding Corner on RxNet is the best reference for more information regarding compounding

<u>Explanation:</u>

RxNet is an open online community, consolidating scientists from the domains of chemistry, biochemistry and expanding industry of drug innovation and improvement. Compounding presents an innovative way for pharmacists to customize prescriptions to suit the requirements of their patients.

The art of compounding employs advanced medicine while still sticking to the roots of the profession of pharmacy. Compounding pharmacies can create unparalleled dosage forms based on patient preferences. Compounded medicines are usually reliable and sufficient for most victims who have spoken to their physician about their wellness.

6 0
3 years ago
What is electrolysis <br><br><br> What is alternating current
trapecia [35]
It is when you separate two substances using electricity of its molten state like aluminium oxide separates to aluminium and oxygen
4 0
3 years ago
a metal worker uses a cutting torch that operates by reacting acetylene gas, C2H2(g), with oxygen gas, O2(g), as shown in the un
harkovskaia [24]

Answer:

650 grams

Explanation:

Given that acetylene gas reacts with oxygen to produce caobon dioxide, water and heat and the unbalnced equation is

C_2H_2(g)+O_2(g) \rightarrow CO_2(g) + H_2O(g)+ heat

Gram-formula mass of C_2H_2= 26 g/mol

So, mass of 1 mole of acelylene is 26 grams

Therefore, mass of 25 moles of acelylene=25x26=650 grams

Hence, the mass of 25 moles of acelylene is 650 grams

8 0
3 years ago
Read 2 more answers
Which of the following elements will sulfur most readily react with in order to help it fill its outer shell with 8 electrons?
Gelneren [198K]

Answer:

Magnesium

Explanation:

Using the KLMN styled electronic configuration, the electronic configuration of sulphur with atomic number 16 is 2, 8,6

What this means is that it needs extra 2 electrons to fill into its M shell to attain the octet configuration.

Now let’s look at Magnesium, with atomic number 12, the electronic configuration it has is 2,8,2.

This means it has 2 extra electrons to give away so as to attain its own stability.

The sulphur atom will gladly accept the two electrons which the magnesium atom wants to give away. This makes it the perfect element to be reacted with sulphur to make it attain its octet configuration

5 0
3 years ago
Other questions:
  • Which of the following is similar among all living organisms on Earth?
    5·1 answer
  • Which group of elements is characterized as having little to no reactivity? Halogens
    14·2 answers
  • Explain why science is is you significant digits
    13·1 answer
  • 86.64 g LiBr mol LiBr
    8·2 answers
  • You place a ton of radioactive material into a lead box and close the box.
    6·1 answer
  • Picture below<br><br> need done by 2:30<br><br><br><br> thanks, God bless your week
    14·2 answers
  • Gallium has two naturally occurring isotopes. 69Ga (68.9257 amu) is the more abundant isotope, at 60.400%. If the atomic mass of
    10·1 answer
  • Does seeing a gas produced always mean a chemical reaction is occurring? Explain.
    8·2 answers
  • Emperical formula for Al³⁺
    5·1 answer
  • In which compound do the atoms have the greatest difference in electrongativity?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!