CHEMISTRY MIDDLE SCHOOL

Taylor mixed two liquids together in a beaker. The beaker quickly heated up. What does this indicate about the reaction that took place in the beaker?A. that there was no energy transfer
B. that energy was created
C. that energy was transformed
D. that energy was destroyed

Answers

Answer 1
Answer:

Answer: c

Explanation:energy cannot be made or destroyEd according to a law of energy

Answer 2
Answer:

Answer:

The answer is C. that energy was transformed

Explanation:

Hope this helped!

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Which one of this is endothermic and which one is exothermic?CH2+O2 -> CO2+H2O+Energy
CaCo+Energy -> CaCo+CO2

Answers

The first one is exothermic because energy is a reactant, the second formula is endothermic

What is special about nitrogen,and what is its main function in the atmosphere

Answers

the important thing about Nitrogen is that it provides air for humans to breathe in, 78% of the air we breathe in is Nitrogen and only 21% is oxygen, 1% is other gases. If the air was pure oxygen then everything would be extremely flammable, and it would also be harmful to humans. Nitrogen plays a very important role in our lives. Oxygen can be poisonous if it was the only gas in the air... we would initially all die if nitrogen wasn't in our atmosphere  

EADY QUESTION WORTH 50PTS

Answers

By adding both the potential energy and the kinetic energy. You can also use the formulas 1/2mv^2 and mgh to find the kinetic and potential energy.
by adding the objects kinetic and energy potential energy.

Which statement best describes the collisions of gas particles according to the kinetic-molecular theory? A. When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with no gain or loss of energy.

B. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.

C. When particles pass close enough to one another, their attractions pull them together, and then they bounce apart with a loss of energy.

D. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with a loss of energy.

Answers

Answer: option B. As particles travel in straight lines, their paths sometimes meet, and then they bounce apart with no gain or loss of energy.

Explanation:

The kinetic-molecular theory explains the the properties and behavior of the gases in terms of the energy, size, and motion of the particles that form the gases.

According to this model, the gas particles are in constant random motion. The particles travel in straight line until they collide either with other particles or with the walls of the vessel. Such collisions are elastic, meaning that energy is not either gain or loss. Therefore, this theory does not consider either attractions or repulsions between the particles. The particles bounce apart and the total kinetic energy is conserved.

Answer:

B  its B

Explanation:

The job of the human heart is to circulate blood through all of the body's arteries, capillaries, and veins. The job of the human lungs is to supply the small amount of blood in them with oxygen. The interaction of these two parts of the human body results in a system that A. removes old blood from the body. B. circulates oxygen-filled blood throughout the body. C. turns the protein in blood into food energy for the digestive system. D. breaks down food energy, and turns it into heat.

Answers

To solve this we must be knowing each and every concept related to heart and its function. Therefore, the correct option is option B that is circulates oxygen-filled blood throughout the body.

What is heart?

The heart is an organ that acts as a blood pump. In spiders as well as annelid worms, it is a straight tube. In mollusks, it is a little more complex structure including one or more collecting chambers (atria) and a primary pumping chamber (ventricle).

The myocardial, a thick muscular wall, is made up of numerous layers in the heart. The endocardium lines the interior, while the pericardium, a narrow layer of tissue, covers the exterior. The interaction of these two parts of the human body results in a system that circulates oxygen-filled blood throughout the body.

Therefore, the correct option is option B that is circulates oxygen-filled blood throughout the body.

To know more about heart, here:

brainly.com/question/14393747

#SPJ2
B
All cells new oxygen and blood is a way for them to get it 

What type of rain contains more acid than normal rain?

Answers

Acid Rain contains more acid than normal rain. It can cause damage to trees, and even buildings. It is caused by factory pollution.
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