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
katrin [286]
3 years ago
11

A student prepares two solutions as shown. The dots represent solute particles. The student wants to test the conductivity of ea

ch solution. Prior to carrying out the investigation, the student needs to identify the variables being controlled and the variables being changed between the two solutions.
A.
The volume of the solution and the number of solute particles are being changed between the two solutions, but the concentration of the solution is being held constant.

B.
The number of solute particles and the concentration of the solution are being changed between the two solutions, but the volume is being held constant.

C.
The number of solute particles is being changed between the two solutions, but the volume and concentration of the solution is being held constant.

D.
The volume of the solution and the concentration of the solution are being changed between the two solutions, but the number of solute particles is being held constant.
Chemistry
1 answer:
stealth61 [152]3 years ago
3 0

Answer:

I think its D

Explanation:

It cant be B or C bc the solute particles arent changing. And  its not A because the concentration isnt constant

You might be interested in
Calculate the mass of water produced when 7.26 g of butane reacts with excess oxygen
MaRussiya [10]

Answer:

11.3 g.

Explanation:

Hello there!

In this case, since the combustion of butane is:

C_4H_{10}+\frac{13}{2} O_2\rightarrow 4CO_2+5H_2O

Thus, since there is a 1:5 mole ratio between butane and water, we obtain the following mass of water:

m_{H_2O}=7.26gC_4H_{10}*\frac{1molC_4H_{10}}{58.14gC_4H_{10}}*\frac{5molH_2O}{1molC_4H_{10}}  *\frac{18.02gH_2O}{1molH_2O}

Therefore, the resulting mass of water is:

m_{H_2O}=11.3gH_2O

Best regards!

4 0
3 years ago
An inherited behavior or physical characteristics that helps an organism survive and reproduce Natural selection Predation Adapt
KiRa [710]

Answer:

it's natural selection

Explanation:

adaptation is when you adapt to some situation

7 0
3 years ago
What is one thing people can do to reduce the amount of carbon in the
Nimfa-mama [501]

Answer:

B

Explanation:

Planting trees sequesters CO2

  all of the other choices produce more CO2 in the atmosphere

8 0
2 years ago
A 32.8 g sample of gas occupies 22.414 L at STP. What is the molecular weight of this gas?
olasank [31]

Answer:

32.8g/mole

Explanation:

Given parameters:

Mass of sample of gas = 32.8g

Volume  = 22.4L

Unknown:

Molecular weight  = ?

Solution:

To solve this problem we must understand that at rtp;

             1 mole of gas occupies a volume of 22.4L

 

Number of mole of the gas  = 1 mole

 Now;

   Mass  = number of moles x molecular weight

    molecular weight  = \frac{mass}{molecular weight}    = \frac{32.8g}{1mole }      = 32.8g/mole

8 0
3 years ago
How many protons, electrons, and neutrons? ANSWEN
Step2247 [10]

Answer:

maybe 20 butvam not sure ooo

5 0
3 years ago
Other questions:
  • Anatomy+ Chemistry List the 8 common ions in the human body and their charge. Identify each as a cation or anion.
    5·1 answer
  • 78PTS! PLEASE HELP ASAP!
    14·1 answer
  • The wavelength of some yellow light is 580.0 nm. What is the frequency of this yellow light?
    15·2 answers
  • All of the following conditions of STP are true except A. 101.3 kPa B. 273.15 K C. 22.4 L D. 3.81 kPa
    10·1 answer
  • Which element would you expect to behave the most like carbon (c)? apex?
    6·2 answers
  • The lock-and-key mechanism refers to
    11·2 answers
  • Question 1 (1 point)
    15·1 answer
  • Energía necesaria para arrancar un electrón de un átomo neutro​
    14·1 answer
  • What is a function of the backbone in animals?
    10·1 answer
  • How many neutrons does an atom of Uranium 240?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!