CHEMISTRY MIDDLE SCHOOL

Jane is on a merry-go-round that is moving at a constant speed. Her velocity is also constant.True
False

Answers

Answer 1
Answer:

the correct answer is False.

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When glucose is consumed, it reacts with oxygen in the body to produce carbon dioxide, water, and energy. How many grams of carbon dioxide would be produced if 45g of C6H12O completely reacted with oxygen
If an atom has 35 protons in the nucleus how many electrons will have orbiting the nucleus
A sample of gas in a balloon has an initial temperature of 31 ∘C and a volume of 1570 L . If the temperature changes to 90 ∘C , and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?
Why can you only change 1 variable in an experiment??? #Science

How many moles of hydrogen gas are generated when 4.0 moles of water react with excess calcium

Answers

Answer:

2moles of H2

Explanation:

First, let us generate a balanced equation for the reaction between calcium and water. This is illustrated below:

Ca + 2H20 —> Ca(OH)2 + H2

From the equation,

2moles of H2O produced 1mole of H2.

Therefore 4moles of H2O will produce = 4/2 = 2moles of H2.

Where are gummy bears made?

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Gummy bears are made in a special factory with many different tools in it that process the gummy bears

Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom. Which term best describes carbon dioxide?

Answers

Carbon dioxide is a pure compound, consisting of two kinds of atoms that are bonded together.

Are diamonds shiny or dull?

Also can you give me an example of dull?

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Diamonds are shiny. Dull is low in luster,
Diamonds are shiny.  An example of something that is dull would be a metal that does not have a shiny value to it (reflects light very well).  One example would be concrete.

Look around you to find an object in motion .describe the objects motion by discussing its position and direction of motion in relation to a refrences point . explain how you could determine the objects speed.

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A bike. In the middle of the street, it is moving north when looking from the light pole's view. I can determine the object's speed by looking at the speedometer I see on the sidewalk that shows how fast a vehicle on the road is going.

What are two ways in which the suns energy can be captured and used?  How can both be used in a home?

Answers

The following exist:

Artificial photosynthesis: Plants can photosynthesize, but we can do it artificially to power anything requiring energy.

Solar thermal energy or STE is a process where the light is reflected from a mirror or lense to heat up anything. 

Photovoltaics or Heat collectors (Solar panels): they absorb the sun's electromagnetic energy and converts it into electricity. 

All of these technologies are very similar to each other... this was a good question

Photosynthesis is a great example: plants use the sun's energy to grow and reproduce. Solar energy-power from the sun is a vast and inexhaustible resource that people have recently discovered and it's used for light and heat.  
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Write a balanced half-reaction describing the reduction of aqueous vanadium(V) cations to aqueous vanadium(I) cations.