CHEMISTRY MIDDLE SCHOOL

in which part of the plant does photosynthesis take place A. the roots B. The leaves C. the flowers?

Answers

Answer 1

Answer: B the answer is B The leaves

Answer 2

Answer:

Answer:

Explanation:

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How does heavy water behave compared to normal water

Answers

You see, heavy water has much more mass. So it is heavier than the normal water
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Answer:

the phosphate head mixes with water ;the fatty acid tails do not

Explanation:

A 1,500-kg car is moving at a speed of 10 m/s. What is the car's kinetic energy?

Answers

Kinetic Energy of particle of mass, m moving with velocity, v is

K.E. = ½mv²

m= 1500 kg

v = 10 m/s

((1/2)*1500)* $10^(2)$

750*10=75000

KE=75 joules

How can you figure out kinetic energy?

According to classical physics, kinetic energy (KE) is determined by multiplying an object's mass by its velocity squared, or half of the mass (1/2*m). The kinetic energy of an object with a mass of 10 kilograms (m = 10 kg) travelling at a speed of 5 m/s (v = 5 m/s) is equal to 125 joules, or (1/2 * 10 kg) * 5 m/s2.

a vehicle with a mass of 1200 kg and a speed of 20 m/s. KE = ½mv 2

KE = ½ x 1200 x (400) = 240,000 J 2.

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Hello!

If The 1500 kg car will increase its velocity to 10 m/s. What Will be its kinetic energy ?

We have the following data:

m (mass) = 1500 kg

v (velocity) = 10 m/s

KE (kinetic Energy) = ? (in Joule)

Formula to calculate kinetic energy:

$\boxed{KE = (1)/(2) *m*v^2}$

Solving:

$KE = (1)/(2) *m*v^2$

$KE = (1)/(2) *1500*10^2$

$KE = (1)/(2) *1500*100$

$KE = (150000)/(2)$

$\boxed{\boxed{KE = 75000\:Joule}}\:or\:\boxed{\boxed{KE = 75\:kJ}}\Longleftarrow(kinetic\:energy)\:\:\:\:\:\:\bf\blue{\checkmark}$

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Describe the process of chromatography.

Answers

Draw with different colours of ink on a chromatographic paper, and then put it into a beaker of water, and then the colours will separate as it is originally not made of itself, as many colours that we see today are made from many colours mixed together or other chemicals

What happens to a liquid when it releases enough energy

Answers

The liquid will suspend and turn into a solid. Phase changes are what creates one state of matter to turn into different. Freezing, condensation, and deposition are created by the loss of kinetic energy. As kinetic energy is increased, particles start to move apart. The molecules gain or lose power, the more energy these molecules have the easy it is for them to break the bonds holding them collectively, this is when you practice enough heat to a substance it changes from a solid to a liquid than from a liquid to a gas.

Final answer:

When a liquid releases enough energy, it undergoes a phase change from liquid to gas. This process is called evaporation or boiling.

Explanation:

When a liquid releases enough energy, it will undergo a phase change from liquid to gas. This process is called evaporation or boiling.

When enough energy is added to the liquid, the molecules gain enough kinetic energy to overcome intermolecular forces and escape the liquid phase. This energy comes in the form of heat.

For example, when water is heated, it reaches its boiling point and begins to evaporate, turning into water vapor. This is an endothermic process, meaning it requires energy input.

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PLEASE ANSWERRRRRRTravels faster through air than metal.

electromagnetic wave, mechanical wave, or both.

Answers

Electromagnetic wave travels faster through air than metal.

Option A

Explanation:

There are different kinds of wave energy. The most significant are electromagnetic and mechanical waves. The mechanical waves propagate through the medium by transfer of energy by vibrating of particles in medium.

So, the more number of particles present in the medium, the more fast the mechanical wave can propagate. So the mechanical waves travel faster in metals consisting of more number of free charge carriers. But electromagnetic waves does not need any of the medium to propagate. So it can travel faster in air than in metals.

Could a mixture be made up of only elements and no compounds? explain.

Answers

yes , because all elements are made of atoms and elements are the building blocks of the universe because everything is made of elements, therefore all matter is made up of atoms and compounds are made of elements, which are made up of atoms sooooo yes you can only make a mixture with elements and compounds

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