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Anuta_ua [19.1K]

3 years ago

7

Which equipment would help you separate a liquid mixture by distillation?

1 answer:

anzhelika [568]3 years ago

7 0

Distillation is a process in many laboratories for the purpose of separating and/or purifying components of a liquid mixture. The distillation apparatus used consists of three major parts: <span>distillation flask - to heat the mixture and volatilize the components, a condenser to cool the vapors back to liquid state, and a collection vessel. The apparatus is typically made of glass and therefore subject to breakage.</span> <span>All components of the distillation apparatus should be protected to a stable stand or rack to avoid it from falling over.</span>

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In one of the classic nuclear physics experiments at the beginning of the 20th century, alpha particles were accelerated toward

Murljashka [212]

Answer:

Explanation:

In the whole process , electric potential energy is converted into kinetic energy .

Kinetic energy = 3.83 MeV

= 3.83 x 1.6 x 10⁻¹⁶ J

= 6.128 x 10⁻¹⁶ J .

Let the closest distance of approach be r .

Electric potential energy = k Q q / r , Q is charge on nucleus , q is charge on alpha particle , r is closest distance .

Electric potential energy = 9 x 10⁹ x 79 x 1.6 x 10⁻¹⁹ x 2 x 1.6 x 10⁻¹⁹ / r

= 3640.32 x 10⁻²⁹ / r

So,

6.128 x 10⁻¹⁶= 3640.32 x 10⁻²⁹ / r

r = 3640.32 x 10⁻²⁹ / 6.128 x 10⁻¹⁶

= 594.05 x 10⁻¹³

= 59.405 x 10⁻¹²

= 59.405 pm .

6 0

3 years ago

A race car traveling at 10. meters per second accelerates at the rate of 1.5 meters per seconds while traveling a distance of 7,

Arturiano [62]

The final speed of the car is 2) 150 m/s

Explanation:

Since the motion of the car is a uniformly accelerated motion, we can solve the problem by using the following suvat equation:

$v^2-u^2=2as$

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance covered

For the car in this problem, we have

u = 10 m/s

$a=1.5 m/s^2$

s = 7,467 m

Solving for v, we find the final velocity (and speed) of the car:

$v=\sqrt{u^2+2as}=\sqrt{10^2+2(1.5)(7,467)}=150 m/s$

Learn more about accelerated motion:

brainly.com/question/9527152

brainly.com/question/11181826

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brainly.com/question/2562700

#LearnwithBrainly

4 0

3 years ago

Read 2 more answers

Determining the pH of substances such as purple grape juice and catsup using test strips can be difficult. Why?

Charra [1.4K]

Answer:

Because they would naturally dye the test strips in the colors violet and red, regardless of their pH values

(would really appreciate the brainliest)

4 0

3 years ago

The alarm at a fire station rings and a 87.5-kg fireman, starting from rest, slides down a pole to the floor below (a distance o

blsea [12.9K]

Answer:

$F_f=840N$

Explanation:

From the question we are told that

Weight of fireman $W_f= 87.5kg$

Pole distance $D=4.10m$

Final speed is $V_f 1.75m/s$

Generally the equation for velocity is mathematically represented as

$v^2 = v_0^2 + 2 a d$

Therefore Acceleration a

$a'= v^2 / 2 d$

$a'= 0.21m/s^2$

Generally the equation for Frictional force $F_f$ is mathematically given as

$F_f=m*a$

$F_f=m*(g-0.21)$

$F_f=87.5*(9.81-0.21)$

Therefore

$F_f=840N$

6 0

3 years ago

You run away from a plane mirror at 1.80 m/s. At what speed does your image move away from you?

Vlad [161]

Answer:

3.60m/s

.................

4 0

3 years ago