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
SashulF [63]
3 years ago
15

How to seperate sand and water

Chemistry
2 answers:
strojnjashka [21]3 years ago
8 0

Answer: Some kind of strainer system

Explanation:

ohaa [14]3 years ago
3 0
Let the water evaporate
You might be interested in
14. A researcher Is curious to find out what effect classical music has on people's level of relaxation
Dima020 [189]

Answer:

It should be "B"

Explanation:

:) :) :) :) :) :)

3 0
3 years ago
The volume of a gas is increased from 445mL to 515ml. If the initial pressure was 120kPa, what is the final pressure of the gas?
Hoochie [10]

Answer: 103.7 kPa

Explanation:

Given that:

initial volume of gas V1 = 445ml

initial pressure of gas P1 = 120 kPa.

new Volume V2 = 515ml

new pressure P2 = ?

Since, only pressure and volume are involved, apply the formula for Boyle's law

P1V1 = P2V2

120 kPa x 445ml = P2 x 515 kPa

53400 = P2 x 515 kPa

P2 = 53400/515

P2 = 103.7 kPa

Thus, the final pressure of the gas is 103.7 kPa

6 0
2 years ago
describe three characteristics that trees used to build treehouses should have. why are these characteristics essential
exis [7]
Wood, leaves, and roots.
6 0
3 years ago
Three Students: Samantha, Colton and Elizabeth are standing the same distance from an explosion. Samantha wears a blindfold and
marin [14]

The cinematic allows finding that Elizabeth is the first to hear the sound, Samantha is the second person to hear the explosion and Fulton the last, since he has the time in the air plus the transformation time of the sound in the headphones.

When an object explodes, a sound wave of great intensity is produced, this wave propagates through the different media with which it is in contact.

The speed of sound in each medium is given by the expressions

          v = \sqrt{\frac{B}{\rho } }

Where B is the volumetric modulus, ρ the density of the medium.

Sound is a wave so its velocity is constant, so we can use the kinematic relationships for uniform motion

            v = \frac{d}{t}  \\t = \frac{d}{v}

Some values ​​of interest for the speed of sound are

Medium          speed (m / s)

air                          340  

liquid            order of 1500  

Solids           order of 4000

In this exercise, the three students are at the same distance, so Elizabeth who hears the explosion through the ground ( solid) should be the person who first hears it.

For the other two students the time difference must be small, Samantha hears the explosive that is transmitted in the air.

Fulton uses headphones, so the explosion must excite a bugle that transforms the sound into signals for the headphones and again transforms it into audible signals.

The headphones are next to it. The time of the signal is the time in the air plus the time of the electrical signal, so you should hear the sound after Samatha.

In conclusion using the kinematics we can find that Elizabeth is the first to hear the sound and possibly Samantha is the second person to hear the explosion and Fulton the last since he has the time in the air plus the transformation time.

Learn more about sound here:

brainly.com/question/15137350

7 0
1 year ago
What is the heat required to vaporize 650 grams of a liquid with a heat of vaporization of 723 joules/grams?
wolverine [178]

Your answer would be E. 470,000 J

3 0
3 years ago
Other questions:
  • Boitic factors and abiotic factors in the ecosystem
    9·1 answer
  • How many molecules are in 0.26 mol of CO2
    14·1 answer
  • An element is a main constituent of paper, diamond and clothes etc. It forms covalent bonds with itself and other elements:- (1)
    7·2 answers
  • What is the chemical name for HCI
    10·2 answers
  • When the equation: __al2(so4)3 + __zncl2 → __alcl3 + __znso4 is correctly balanced using the smallest whole number coefficients,
    7·2 answers
  • From what group must the terminal atoms come in an abx molecule where the central atom is from group 6a, for the electron-domain
    5·2 answers
  • - If you have a balloon of gas at 0°C and 1 atm, how many gas particles do you have?
    5·1 answer
  • Air trapped in a cylinder fitted with a piston occupies 145.7 mL at 1.08 atm pressure.
    12·1 answer
  • Titration of 25.0 mL of an HCl solution of unknown concentration requires 14.8 mL of 0.100 M NaOH. What is the molar concentrati
    8·1 answer
  • What is chemical reaction ??​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!