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Science

05/23/20

what is the density,in grams per mL (g/mL),of a liquid that has a mass of 206 g and a volume of 321 mL?

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Science Chemistry Organic Chemistry

05/22/20

What is the pH of the perchloric acid solution if 4.55 L of perchloric acid solution reacted completely with 1.86 g sodium carbonate in a double replacement reaction?

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Science Math

05/21/20

Is it possible to create a formula to rank subject on a scale of 1-10 (decimals acceptable) given the data?

Trying to create a formula to that ranks a subjects on a scale of 1-10Data I have includes, in no particular order The number of trials completed over the number of trials attempted. For example... more

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Science Chemistry Organic Chemistry

05/21/20

How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid

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Science Chemistry Organic Chemistry

05/21/20

what is the oxidation number of manganese in permanganate ion?

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Science Chemistry Organic Chemistry

05/21/20

how many grams of water react with 5 grams iron chloride

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Science Chemistry Organic Chemistry

05/21/20

how many grams of water are produced when 2.50 mol oxygen reacts with hydrogen

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Science Chemistry Organic Chemistry

05/21/20

how many grams of water are produced from reacting 32.0 g hydrogen??

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Science Math Algebra 1 Algebra 2

05/20/20

How much liquid (in mL) was originally in the beaker with the 20% solution and how much liquid (in mL) was originally in the beaker with 15% solution?

You have one beaker which contains an unknown amount of a 15% iodine solution and another beaker which contains an unknown amount of a 20% iodine solution. You add only half of the 20% solution to... more

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Science Chemistry

05/20/20

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

A cylinder with a movable piston contains 6.00 g of helium, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same.... more

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Science Chemistry

05/20/20

7.00 L of argon gas is known to contain 78 grams. If the amount of gas is increased to 96 grams, what is the new volume (at an unchanged temperature and pressure)?

please explain how you got the answer, thank you

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Science

05/20/20

Problems solved

Problems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solvedProblems solved

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Answers •3

Science

05/20/20

What is the density in grams per mL (g/mL) of a liquid that has a mass of 206 g and a volume of 321mL

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Answers •1

Science Statistics Probability

05/20/20

A random sample of 36 seventh grade students in Harvard are given an exam on a reading test. Below are their raw scores.

73, 77, 80, 80, 84, 86, 91, 93, 93, 93, 94, 97, 100, 100, 103, 103, 104, 105, 105, 106, 108, 110, 111, 117. 120, 120, 123, 124, 126, 128, 129, 129, 130, 130, 136Sample mean =... more

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Science

05/19/20

Does apparent motion mean that the stars seem to move because the earth is rotating on it's axis?

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Science 7th Grade

05/19/20

make a suggestion for how to help the Bighorn Sheep in California and Nevada access each other to increase genetic diversity. Include why genetic diversity is important to the health of the species.

It’s for science. Pls help :)!!

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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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Answers •1

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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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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Answers •1

what is the density,in grams per mL (g/mL),of a liquid that has a mass of 206 g and a volume of 321 mL?

What is the pH of the perchloric acid solution if 4.55 L of perchloric acid solution reacted completely with 1.86 g sodium carbonate in a double replacement reaction?

Is it possible to create a formula to rank subject on a scale of 1-10 (decimals acceptable) given the data?

How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid

what is the oxidation number of manganese in permanganate ion?

how many grams of water react with 5 grams iron chloride

how many grams of water are produced when 2.50 mol oxygen reacts with hydrogen

how many grams of water are produced from reacting 32.0 g hydrogen??

How much liquid (in mL) was originally in the beaker with the 20% solution and how much liquid (in mL) was originally in the beaker with 15% solution?

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

7.00 L of argon gas is known to contain 78 grams. If the amount of gas is increased to 96 grams, what is the new volume (at an unchanged temperature and pressure)?

Problems solved

What is the density in grams per mL (g/mL) of a liquid that has a mass of 206 g and a volume of 321mL

A random sample of 36 seventh grade students in Harvard are given an exam on a reading test. Below are their raw scores.

Does apparent motion mean that the stars seem to move because the earth is rotating on it's axis?

make a suggestion for how to help the Bighorn Sheep in California and Nevada access each other to increase genetic diversity. Include why genetic diversity is important to the health of the species.

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.

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