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
Rashid [163]
3 years ago
9

What part of Dalton’s atomic theory was later proved to be incorrect?

Chemistry
2 answers:
Dahasolnce [82]3 years ago
6 0

Answer:

D

Explanation:

It was later identified that atoms of the same element can be different. This is mostly seen in elements with different isotopes. An example is carbon-14 and carbon-12 that have different masses due to differences in neutrons numbers in their nuclei.

Atoms are also divisible into subatomic particles. Today, atoms can be smashed apart into neutrons, protons and electrons particles. This also occurs naturally in radioactive decay.

lapo4ka [179]3 years ago
6 0

answer:is D

Explanation: explanation i just take the test APEX

You might be interested in
Which sample would have the same number of molecules as 11.2L of He (g) at 273K and 202kPa?
bazaltina [42]

Answer: 11.2 L of CH_4(g) at 273K and 202kPa

Explanation:

According to ideal gas equation:

PV=nRT

P = pressure of gas = 202 kPa = 1.99 atm  ( 1kPa= 0.0098 atm)

V = Volume of gas = 11.2 L

n = number of moles = ?

R = gas constant =0.0821Latm/Kmol

T =temperature =273K

n=\frac{PV}{RT}

n=\frac{1.99\times 11.2}{0.0821 L atm/K mol\times 273K}=0.99moles

According to avogadro's law, equal number of moles occupy equal volumes and contain equal number of molecules at same temperature and pressure conditions.

As 11.2 L of CH_4(g) at 273K and 202kPa will have same moles as 11.2L of He (g) at 273K and 202kPa, thus they have same number of molecules.

8 0
3 years ago
Explain, in full sentences, in terms of heat transfer (what type of heat transfer /how do you know?) AND specific heat (why copp
Hatshy [7]
Yes copper and the data in the table
5 0
3 years ago
Which is a way that biotechnology has Not helped society? Bacteria is used to grow vaccines in large quantities. Drugs can be de
fenix001 [56]
Well, you just have to look for the one that does not have any positive/benefit.

1. is not the answer, since vaccines prevent countless people from disease and death. 

2. is not the answer since animal abuse is not okay and the statement shows that science has become more efficient, therefore helping society become more efficient

3. is definitely not a positive effect that biotech has had on society. antibiotic-resistant bacteria endangers everyone. Therefore, this is the answer :)

4. is not the answer because helping people with diabetes be able to afford their medication is very helpful.


8 0
4 years ago
Read 2 more answers
DNA transcription-to-translation # 1 Homework Unanswered Due in 4 days Given the following sequence of the coding strand, writte
uysha [10]

Explanation:

Translation is the process by which a polypeptide is polymerized from genetic information.

Firstly we have to make a transcription from the coding DNA strand to a single RNA strand (mRNA). RNA pol reads from 5' to 3' of the template strand and nucleotides are added by complementarity ( Adenine with Uracil, Thymine with Adenine and Cytosine with Guanine, Guanine with Cytosine).

DNA:  5'-  CGTTATGTGGACTCTCTGGTATGACTCACCTTAT -3'

mRNA: 5'-GCAAUACACCUGAGAGACCAUACUGAGUGGAAUA -3'

mRNA goes to the ribosomes where translation takes place. The enzyme will read every three letters (codon) starting at the start codon sequence (TAC in DNA, AUG in mRNA). According to codons tRNA carrying the amino acids will place it (by complementary to their anticodon) and the enzyme will join it to the nascent polypeptide or protein.

In order to do this we need to look up the genetic code and assign the proper amino acids.

Unfortunately the given strand does not have a start codon TAC codifying for initial methionine.

3 0
3 years ago
(1)List three things you know about<br> an atom? (2) What is matter created of?
kicyunya [14]

Answer:

Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).

Explanation:

8 0
3 years ago
Other questions:
  • NaOH, KOH, and Ca(OH)2 are examples of (4 points)
    6·1 answer
  • ___in Earth’s___ is the up and down movements of plastic-like material within that layer.
    14·1 answer
  • Under laboratory conditions of 25.0 degrees C and 99.5 kPa, what is the maximum number of liters of ammonia that could be produc
    11·1 answer
  • Which of the following compounds would have a linear molecular geometry? 1. N2 2. H2S 3. CO2 a. 1 and 3 only b.1 and 2 only c.2
    15·1 answer
  • What is the Noble gas notation for mercury (Hg)?.
    13·1 answer
  • You need to decontaminate water cans previously used for nonpotable water. You calculate that five gallons of disinfecting solut
    6·1 answer
  • Photosynthesis needs water and carbon dioxide to happen. These 2 ingredients are called _______.
    5·1 answer
  • Covalently bonded compounds differ from ionically bonded compounds because:
    10·1 answer
  • A The birthrate is higher than the death rate.
    5·1 answer
  • Why it is important for humans to conserve freshwater?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!