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
Alina [70]
2 years ago
7

Which best defines a pioneer species?

Chemistry
2 answers:
Juli2301 [7.4K]2 years ago
8 0

Answer: C (The first species to populate an uninhabited area)

Explanation:

uysha [10]2 years ago
3 0

Answer:

i think the best answer is d

Explanation:

sorry of im wrong have a great day

You might be interested in
Classify these bonds as ionic, polar covalent, or nonpolar covalent. You are currently in a sorting module.
Makovka662 [10]

Answer:

C-O: polar covalent

Mg-F: ionic

Cl-Cl: nonpolar covalent

Explanation:

Ionic bonds are formed between an atom of a metallic element and another atom of a non-metallic element. Thus, Mg-F is an ionic bond, in which Mg is the metal and F is the nonmetal.

Covalent bonds are formed between two non-metallic elements. So, C-O and Cl-Cl are covalent bonds, because C, O, and Cl are nonmetals.

In C-O, the atom of oxygen (O) has more electronegativity than the atom of carbon (C). Thus, O will attract the electrons with more strength and a difference in charge will be established between the two bonded atoms. So, this covalent bond is polar.

In Cl-Cl, both atoms have the same electronegativity because they are from the same chemical element (Cl). Thus, this bond is nonpolar.

7 0
3 years ago
Three radioisotopes are being discussed in a chemistry class. Technetium-99m has a half-life of 6 hours. Rubidium-87 has a half-
8_murik_8 [283]
A likely application of a radioactive isotope with a short half-life such as Technetium-99 will be as a medical tracer. It will likely be used by a doctor to check the movement of substances within a person's body.

A radioactive isotope with such a long half-life like Rubidium-87 is likely used in the determination of the age of fossils and artifacts found by archaeologists.<span />
5 0
3 years ago
Read 2 more answers
A)Completaţi ecuaţiile chimice următoare cu formulele chimice şi coeficienţii adecvaţi:
Scilla [17]

Answer:co2

Explanation:because of the oxygen levels

6 0
3 years ago
Is the bond C=O polar or non polar
rewona [7]

Answer:

Non Polar

Explanation:

Non Polar molecule because of its linear symmetric shape

6 0
3 years ago
If object A is placed on the pH scale at pH = 3 and object B is placed at pH = 8, which of the following must not be true?
ss7ja [257]
I believe the correct answer is D. Because object A on the pH scale reads pH=3. Which means it is more acidic in nature and thus possess a greater hydrogen or hydronium ion concentration than object B, which has a higher value on the pH scale. Object B would thus have a lower hydronium ion concentration than Object A.
8 0
2 years ago
Other questions:
  • a test done under standard conditions is referred to as what in chemistry? A. STP B. Control C. Rate Constant D. Kinetics E. Non
    12·1 answer
  • A chemist needs 40.0 g of concentrated sulfuric acid for an experiment. the density of concentrated sulfuric acid at room temper
    6·1 answer
  • Write a balanced equation for double replacement of KOH+ZnCl2
    5·1 answer
  • Which elements are part of the halogens group?
    15·1 answer
  • (50 POINTS AND WILL GIVE BRAINLY!) which actions will help a package of hot chocolate powder to dissolve more quickly?
    15·1 answer
  • McCray, Shy'Anne
    11·1 answer
  • Michelle and john are walking down the street deep in conversation
    8·1 answer
  • A block of aluminum weighs 50.0g it's density is 2.70 g/cm3 what is the volume of a block
    14·1 answer
  • If a fish tank holds 6912 cubic inches of water, how many cubic feet of water are there in a fish tank.
    9·1 answer
  • The overall flow of energy through an ecosystem is from
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!