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
kotegsom [21]
3 years ago
5

Hello I need help very bad!!!

Chemistry
1 answer:
Oksanka [162]3 years ago
6 0

D. Cell membrane: surrounds a cell and allows substances to pass in and out

You might be interested in
What is one wavelength?
Dmitry_Shevchenko [17]

Answer:

It is the distance between two compressions or two rarefactions.

Explanation:

7 0
4 years ago
A chemist combines ethane and chlorine with the goal of producing chloroethane which other product could be reasonably expected
lesya692 [45]
<span>So when the chemist combines Ethane (CH3CH3) and Chlorine (Cl2) with the intention of producing Chloroethane (CH3CH2Cl), the other product that's formed in this reaction is 1,2-dichloroethane (ClCH2CH2Cl) also called as Ethylene dichloride with molecular weight of 98.954 g/mol. This is a colorless oily flammable substance that weighs heaver when vaporized.</span>
5 0
3 years ago
Read 2 more answers
Can sedimentation and decantation be used for all types of mixtures? Explain
Bumek [7]

Explanation:

1. Sedimentation and decantation cannot be used for all types of mixtures.

Decantation is a separation technique in which is used to separate immiscible liquids or mixtures containing liquid and solids within them.

In decantation, gravity is used to bring the denser materials to settle at the bottom.

For homogenous mixtures, it is not possible to use decantation. A solution of sugar and water will not decant.

2. Yes, mass of an object reduces the settling time of such object in a mixture.

The higher the mass, the faster the rate of settling. Also, as we know, mass is directly proportional to density. A body with a high density will settle faster in solution.

4 0
3 years ago
A sample of oxygen gas occupies a volume of 250 mL at .8 atm of pressure. What volume will it occupy at 1.2 atm of pressure?
musickatia [10]
167 mL

P1V1 = P2V2
P1 = .8 atm
V1 = 250 mL
P2 = 1.2 atm

Solve for V2 —> V2 = P1V1/P2

V2 = (0.8 atm)(250 mL) / (1.2 atm) = 167 mL
7 0
3 years ago
The Percentage of salt-water vs. fresh-water:???%
I am Lyosha [343]

Answer:

<em><u>Over 96 percent is saline. Of total freshwater, over 68 percent is locked up in ice and glaciers. Another 30 percent of freshwater is in the ground.</u></em>

6 0
2 years ago
Other questions:
  • Help me i have the stupid if you get this right i will mark Brainliest
    9·1 answer
  • Organism with heterozygous alleles received how many alleles from each parent?
    9·1 answer
  • Which of the following would shift the following equilibrium system to the right? C2H2(g) + H2O(g) ⇌ CH3CHO(g) Removing H2O(g) f
    13·1 answer
  • The rate constant for this first‑order reaction is
    15·1 answer
  • What is the mass if the density is 2.7 g/ml and the volume is 11mL
    10·1 answer
  • PLEASE HELP ME IM GIVING 30 POINTS
    7·1 answer
  • 3500 g of 5.00°C water is heated until its temperature is 37.0°C. If the specific heat of
    8·1 answer
  • g The boiling of water is a Question 4 options: chemical and physical damage chemical change because a gas (steam) is given off
    8·1 answer
  • Can anyone please suggest me a good and easy project topic for physics and chemistry. For class nine or ten students.Please plea
    10·1 answer
  • What is the F-Xe angle in the molecule - F; Xe * F_{2} (Xe has three lone pairs of electrons )?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!