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Science Physics

05/19/20

What is the angle of reflection and incidence?

-What is the angle of reflection if the angle of incidence is 38.5 degrees?-What is the angle of incidence if the angle of reflection is 14.7 degrees?

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Science Chemistry Biochemistry Organic Chemistry

05/19/20

Tetrahydrocannabinol (thc), the active agent in marijuana, is composed of 80.16% carbon, 9.63% hydrogen and 10.17% oxygen by mass. What is the empirical formula of thc?

The answer I got was C7H10O, however I think I am missing a step since my answer was incorrect. This is what I did 80.16g C (1mol/12.01g)C =7 mol C 9.63g H (1mol/1.008g)H =10mol H 10.17g O... more

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Science Chemistry Organic Chemistry Act Science

05/19/20

Please help! I cannot figure out the steps of going from mass of Hydrogen to moles of carbon in ethanol.

A sample of ethanol (C2H6O) contains 3.024g of hydrogen. How many moles of carbon are in the sample ? Molar Mass of ethanol (C2H6O)=46.07g/mol

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Science

05/18/20

Problems solved

Problems solvedProblems solvedProblems solvedProblems solvedProblems solved

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Science Chemistry

05/18/20

Question in the description can you please explain how you got the answer, thank you.

A gas occupies 40 L of space. What was the initial volume of the gas at STP when the pressure increases to 800 mmHg and the temperature increases to 350 K.

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Science Chemistry

05/18/20

Question in the description can you please explain how you got the answer, thank you.

A container of gas at 2.5 atm of pressure occupies 18.0 L of space. It is placed in a freezer where temperature is negative 20 degrees Celsius. The volume of this gas dropped to 8.0 L and the... more

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Science Math Social Studies Ela

05/18/20

What instrument is used to measure temperature

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Science Math Physics Sat

05/18/20

For a submarine to stay submerged, it must be neutrally buoyant, which means it is maintaining a careful balance between its weight and the buoyant force of water pushing it toward the surface.

If a submarine has an enclosed volume of 327.781 m3, how much must it weigh to stay submerged? (Use 1000 kg/m3 for the density of water.)

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Answers •2

Science

05/16/20

Write a description of what you learned about energy.

Write a description of what you learned about energy. Some questions to consider (not all may apply): What type of energy source is it? Where does the energy resource come from? Is it easily... more

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Science

05/14/20

Where do animal and human traits come from?

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Answers •1

Science

05/14/20

Whose main job is to help the plant cell make proteins

Cells need to make protein

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Science

05/14/20

What do you call one version or form of trait

A. AlleleB. GeneC. GenotypeD. Phenotype

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Science Chemistry

05/13/20

A sample of helium gas has a volume of 788 L at a pressure of 76 cmHg and a temperature of 28° C. When the volume is increased to 1290 L, what is the temperature of the helium?

Please explain how you got the answer, thank you

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Science Chemistry

05/13/20

A sample of oxygen gas occupies a volume of 230 cm3 at 101° C. What will be volume of oxygen when the temperature drops to - 15° C ?

Please explain how you got the answer, thank you

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Answers •1

Science Physics Newtons Laws Motions

05/13/20

How Does Newtons Laws Apply To An Amusement Park In General?

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Answers •1

Science Physics Sat

05/13/20

A cube is placed in a pool of water. If the cube is 48 cm long on each side, what is the weight of the cube? (Use 1000 kg/m3 for the density of water)

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Answers •1

Science Physics Sat

05/13/20

An unknown gas has a density of 0.18 kg/m3, and air has a density of 1.275 kg/m3. If a balloon is filled with 0.129 m3 of helium,

what is the maximum mass the balloon can have and still float?

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Science Physics Sat

05/13/20

A rectangular boat is 11 m wide and 12 m long. After a truck pulls onto the ferry, the boat ends up with a depth of 4 cm submerged under the water.

If the weight of the ferry is 10,000 N, what is the maximum weight of the truck? (Assume the density of water is 1000 kg/m3.)

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Science Physics Sat

05/13/20

A rectangular boat is 7 m wide and 7 m long. After a truck pulls onto the ferry, the boat ends up with a depth of 1 cm submerged under the water.

What is the combined weight of the truck and the ferry? (Assume the density of water is 1000 kg/m3.)

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Answers •1

Science Physics Sat

05/13/20

For a submarine to stay submerged, it must be neutrally buoyant, which means it is maintaining a careful balance between its weight and the buoyant force of water pushing it toward the surface.

If a submarine has an enclosed volume of 327.781 m3, how much must it weigh to stay submerged? (Use 1000 kg/m3 for the density of water.)

Follows • 1

Answers •1

Science Physics Sat

05/13/20

A rectangular boat is 7 m wide and 7 m long. After a truck pulls onto the ferry, the boat ends up with a depth of 1 cm submerged under the water.

What is the combined weight of the truck and the ferry? (Assume the density of water is 1000 kg/m3.)

Follows • 1

Answers •1

Science

05/13/20

Which cell structures are seen in prokaryotic and eukaryotic cells?

Which cell structures are seen in prokaryotic and eukaryotic cells?nucleuscell membranemitochondriaDNAribosomescytoplasmplease tell me which ones and quick!

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Answers •1

Science Physics

05/13/20

How does this affect our uses for metal and non-metal?

Answer this by giving some uses for metal and non-metal materials and explain how the melting and boiling points make them suitable.

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Answers •1

Science Physics

05/13/20

Why do metal and non-metal materials have such vastly different melting and boiling points?

Explain in terms of particle bonds and the forces between them.

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Science

05/13/20

The earth experiences seasons because it is tilted 23.5* as it revolves around the sun

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Answers •1

What is the angle of reflection and incidence?

Tetrahydrocannabinol (thc), the active agent in marijuana, is composed of 80.16% carbon, 9.63% hydrogen and 10.17% oxygen by mass. What is the empirical formula of thc?

Please help! I cannot figure out the steps of going from mass of Hydrogen to moles of carbon in ethanol.

Problems solved

Question in the description can you please explain how you got the answer, thank you.

Question in the description can you please explain how you got the answer, thank you.

What instrument is used to measure temperature

For a submarine to stay submerged, it must be neutrally buoyant, which means it is maintaining a careful balance between its weight and the buoyant force of water pushing it toward the surface.

Write a description of what you learned about energy.

Where do animal and human traits come from?

Whose main job is to help the plant cell make proteins

What do you call one version or form of trait

A sample of helium gas has a volume of 788 L at a pressure of 76 cmHg and a temperature of 28° C. When the volume is increased to 1290 L, what is the temperature of the helium?

A sample of oxygen gas occupies a volume of 230 cm3 at 101° C. What will be volume of oxygen when the temperature drops to - 15° C ?

How Does Newtons Laws Apply To An Amusement Park In General?

A cube is placed in a pool of water. If the cube is 48 cm long on each side, what is the weight of the cube? (Use 1000 kg/m3 for the density of water)

An unknown gas has a density of 0.18 kg/m3, and air has a density of 1.275 kg/m3. If a balloon is filled with 0.129 m3 of helium,

A rectangular boat is 11 m wide and 12 m long. After a truck pulls onto the ferry, the boat ends up with a depth of 4 cm submerged under the water.

A rectangular boat is 7 m wide and 7 m long. After a truck pulls onto the ferry, the boat ends up with a depth of 1 cm submerged under the water.

For a submarine to stay submerged, it must be neutrally buoyant, which means it is maintaining a careful balance between its weight and the buoyant force of water pushing it toward the surface.

A rectangular boat is 7 m wide and 7 m long. After a truck pulls onto the ferry, the boat ends up with a depth of 1 cm submerged under the water.

Which cell structures are seen in prokaryotic and eukaryotic cells?

How does this affect our uses for metal and non-metal?

Why do metal and non-metal materials have such vastly different melting and boiling points?

The earth experiences seasons because it is tilted 23.5* as it revolves around the sun

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