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
lidiya [134]
2 years ago
11

Which model best represents an element?

Chemistry
1 answer:
Kobotan [32]2 years ago
7 0
Answer:

c. gold marbles because they have one type of atom


an element is a substance that is entirely made from one type of atom.
You might be interested in
Many enzymes are inhibited irreversibly by heavy metal ions such as Hg2+ , Cu2+ , or Ag+ , which can react with essential sulfhy
3241004551 [841]

Answer:

The minimum molecular weight of the enzyme is 29.82 g/mol

Explanation:

<u>Step 1:</u> Given data

The volume of the solution = 10 ml = 10*10^-3L

Molarity of the solution = 1.3 mg/ml

moles of AgNO3 added = 0.436 µmol = 0.436 * 10^-3 mmol

<u>Step 2:</u> Calculate the mass

Density = mass/ volume

1.3mg/mL = mass/ 10.0 mL

mass = 1.3mg/mL *10.0 mL = 13mg

<u>Step 3:</u> Calculate minimum molecular weight

Molecular weight = mass of the enzyme / number of moles

Molecular weight of the enzyme = 13mg/ 0.436 * 10^-3 mmol

Molecular weight = 29.82 g/mole

The minimum molecular weight of the enzyme is 29.82 g/mol

7 0
3 years ago
Which of the following mixtures may be act as a buffer solution?
lions [1.4K]

Answer:

B) HF, NaF

Explanation:

  • A buffer solution is made up of a weak acid and its conjugate base.
  • In this case, HF is a weak acid and NaF is the conjugate base, therefore the mixture of HF,  and NaF would make a perfect buffer solution.
  • The buffer would have the weak acid HF and its conjugate base, F- which comes from the soluble salt NaF.
4 0
3 years ago
.) What happens when Carbon dioxide gas is Collected down ward of water ? ​
Free_Kalibri [48]

when carbon dioxide gas is collected down ward of water wet gas is collected by the downward displacement of water . This is used for gases that are not very soluble in water . ... In water , carbon dioxide produces a weakly acidic solution , carbonic acid .

8 0
3 years ago
Describe a Mesosaurus. ​
ElenaW [278]

Mesosaurus lived in freshwater lakes and ponds. Elongated and slim, it measured about 3.3 feet long. The skull and tail were both long and narrow, and the animal probably undulated through the water as it fed on small crustaceans and other prey with its jaws, which were full of long, thin, pointed teeth.

5 0
2 years ago
For a hydrogen atom, which electronic transition would result in the emission of a photon with the highest energy? for a hydroge
vagabundo [1.1K]

The transitions which fall to the lowest principle position release the greatest energies. In this case, this would be the transition from the 5p to the 3s orbital (a Paschen transition).

Hope this helps!

6 0
3 years ago
Read 2 more answers
Other questions:
  • Which is more metallic<br> a) Gold<br><br> b) Bismuth
    11·1 answer
  • What would you predict is worse based on your knowledge of quantum theory - a weak beam of ultraviolet light, or an intense beam
    7·2 answers
  • Which of the following is a compound machine?
    14·2 answers
  • The greenhouse effect traps the sun's energy on Earth similar to
    7·2 answers
  • Which bond pair does not have a polar covalent bond? P – Cl O – H S – Cl H – Cl Cl – Cl
    15·1 answer
  • What is the concentration of a solution formed by diluting 25.0 ml of a 3.2 M NaCl solution to 135.0 ml?
    5·2 answers
  • Identify the solute and the solvent in each of the following solutions
    12·1 answer
  • I will give u 14 points if u get this right​
    9·1 answer
  • What is accretion?????
    9·2 answers
  • Can you treat a sulfuric acid burn with sodium hydroxide
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!