A student predicts that a solution of ethanol (C2H5OH) and water will have a lower density at room temperature than that of pure water. Which tools would most help the student test this prediction?
Will give brainly
A student predicts that a solution of ethanol (C2H5OH) and water will have a lower density at room temperature than that of pure water. By taking moisture the student can test this prediction.
What are the properties of ethanol ?Ethanol is a natural plant fermented by-product which can also be produced by the process of hydration of ethylene.
It is an important industrial reagent, can be used as a solvent, for the synthesis of solvent, organic chemicals and some additive to automotive gasoline.
Its chemical formula is C2H6O, two carbon atoms and one oxygen atom where as the structural formula is C2H5OH indicating that the two-carbon chain has a hydroxyl group.
Ethanol is always a liquid at room temperature and has the melting point of 156K and a boiling point of 351 K.
It is used in making many medicines like cough syrups, tonics, any proportion of ethanol is soluble in water.
Direct consumption of even a small quantity of pure ethanol is lethal to body.
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Explain how the magnetic car phenomenon is similar to the phenomenon shown in the opening video. Use evidence and scientific reasoning to support your response.
Answer:
your question is in complete please provide us the video so we could solve it
Explanation:
If a person could lift 60 pounds on earth, how much could he lift on the moon?
Answer:
360kg or 793.664 pounds
Explanation:
The gravity on the surface of the Moon is one sixth that on the surface of Earth, so you should be able to lift an object six times as massive.
Answer:
60kg on Earth equates to about 360kg on the Moon.
Explanation:
The gravity on the surface of the Moon is approximately one sixth that on the surface of Earth, so you should be able to lift an object six times as massive.
Hope it is helpful...Which organs are connected to the bladder by two tubes?
Kidneys
Lungs
Ovaries
Testes
Which organs are connected to the bladder by two tubes?
Kidneys☑️Lungs
Ovaries
Testes
The stem of a plant must be strong to keep the plant from falling down. The roots of a plant grow underground and the roots take in water for the plant. What structure of an animal functions like the plant stem?
Awnswers: A. the nose B. the heart c. the skin d. skeleton
Answer:
THE ANSWER IS B THE HEART
PLEASE HELP, this assignment is worth 45 points and i dont have any free time to finish it
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OMG just please help me
Summarize how Earth’s surface has and does change over varying time and spatial (space) scales. Use evidence with examples to support your response
Answer: The motion of the Earth's plates produces changes on a planetary scale over a range of time periods from millions to billions of years.
Explanation: Earth's surface is constantly changing. Wind, water, and ice break down large rocks and move sediments on the surface. It usually takes years for weathering, erosion, and deposition to cause noticeable changes. Some events, though, change Earth's surface much more quickly.
Hope this helps! Have a wonderful day!
Brainliest?????
Answer:
Down.
Explanation:
The earth's surface has changed because it's continents are more spread out. 300 million years ago, there was only one huge continent named Pangaea. If you focus at a map, you might see that the earth's continents fit like a puzzle piece. Land don't just move; beneath the suface of land, there are techonic plates. Those are what causes earthquakes... And what makes continents move. Right now, techonic plates move at the speed of about 1 to 2 inches per year. With that evidence, you could probe that when Pangaea existed, there were techonic plates that moved it. But they only become obvious after severel million decades. Other things, like earthquakes, take a second to happen. Take the 1906 San Francisco Earthquake for example. At 5:12 a.m., people felt a jolt. It didn't take very long, and people had no idea it was going to happen. Flash back to the techonic plates. Techonic plates are the opposite. It moves slow. My proof is that after 300 million years, it only became obvious. It changes, actually. In conclusion, things that are very short, and things that are very long to happen, might be related, just like earthquakes and techonic plates. Earthquakes are CAUSED by techonic plates. Thank you.
A box measures 20 cm by 10 cm by 5 cm. The formula used to determine the volume of a regular shaped solid is volume = length x width x height. Calculate the box's volume.
Answer:
1,000 cubed cm
Explanation:
Multiply the numbers together:
20 × 10 × 5
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