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
ddd [48]
2 years ago
14

Fast pls..,.,,..,,.,.,.

Chemistry
2 answers:
NeX [460]2 years ago
7 0
The answer is D) gills. Gills are how fish breath.
OLga [1]2 years ago
4 0
I believe the answer is gills

Fish's use gills to breathe, so tadpoles should use gills too

hope this helps

(got the info from a documentary i watched a couple years ago)
You might be interested in
Quantitative was to measure light intensity
Fofino [41]
One candela per steradian is termed a lumen, which is the measure of light intensity people are most familiar with One foot candle is equivalent to one lumen per square foot
7 0
2 years ago
Read 2 more answers
9.86 x 10²⁸ O-atoms require what volume (L) N₂O₂ at STP?
jolli1 [7]
First, we use avogadro's number to convert atoms into moles. Then, relate the number of moles from elemental to the compound. Lastly, we use conditions at STP to calculate the volume. We do as follows:

<span>9.86 x 10²⁸ O-atoms ( 1 mol / 6.022x10^23 atoms O) ( 1 mol N2O2 / 2 mol O ) ( 22.4 L / 1 mol ) = 1833809.37 L needed</span>
8 0
2 years ago
Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He.
Goryan [66]

Answer:

This can be solved using Dalton's Law of Partial pressures. This law states that the total pressure exerted by a gas mixture is equal to the sum of the partial pressure of each gas in the mixture as if it exist alone in a container. In order to solve, we need the partial pressures of the gases given. Calculations are as follows:

Explanation:

P = 3.00 atm + 2.80 atm + 0.25 atm + 0.15 atm

P = 6.8 atm

3.5 atm = x (6.8 atm)

x = 0.51

8 0
3 years ago
Read 2 more answers
What are metalloids?
goldenfox [79]

A metalloid is a type of chemical element which has a preponderance of properties in between, or that are a mixture of, those of metals and nonmetals.

3 0
2 years ago
Read 2 more answers
A 29.0-g sample of water at 290. K is mixed with 51.0 g water at 300. K. Calculate the final temperature of the mixture assuming
zubka84 [21]
Let me conduct my research
5 0
2 years ago
Read 2 more answers
Other questions:
  • Decomposition reaction of Ag3N
    9·1 answer
  • Answer these 2 questions FAST PLEASEE!!! I WILL GIVE BRAINLIEST AND GIVE EXTRA POINTS
    14·1 answer
  • Stable electron configurations are likely to contain ____.
    14·2 answers
  • 6. Why are ionic substances not known as molecules?
    6·2 answers
  • Please help with chemistry work
    15·1 answer
  • When 0.110 mol of aluminum are allowed to react with an excess of chlorine gas, Cl2, how many moles of aluminum chloride are pro
    5·1 answer
  • Based on your lab report, provide the chemical reaction that occurs in Benedict's test for the following molecule.​
    15·1 answer
  • Determine the energy released when an electrons transitions from n =3 to n = 2
    8·1 answer
  • What is the pOH of a solution that has a pH of 2
    5·1 answer
  • Describe and explain the trend in atomic a.radius within the group.Explain the difference between the size of b.the atoms and th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!