4,374 Answered Questions for the topic Science

05/01/20

Ball Being Dropped
At time t=0 a ball is dropped from a height of 100 feet. One second later, another ball is dropped from the height of 75 feet. The position of the ball is given by the formula: s(t) = -16t^2 +... more
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Science Chemistry

05/01/20

Question in the description, can you please explain how you got the answer, thank you
What is the greatest amount of sodium chloride in moles that can be made with 13 grams copper II chloride and 15 grams sodium nitrate? Which reactant is limiting? How many moles of the excess... more
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05/01/20

what is motion? class 9
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Science Chemistry

05/01/20

Question in the description, can you please explain how you got the answer, thank you
How many grams of water are formed when 45 moles of sulfuric acid react with 50 moles of sodium hydroxide? Which reactant is limiting? How many moles of the excess reactant will be left after the... more
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05/01/20

Find the first and second derivatives of M with respect to X
 M = 9X4 - 12 X 9 + 25 X Y Z + 50
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Science

04/30/20

Science Helping

The moon (rotates, orbits, gravitates, latitude) on its axis. The moon (rotates, latitudes, orbits) around the Earth due to (axis, latitude, revolution, gravity) and its speed of motion. I need to... more
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04/30/20

Biology Dilution Calculation

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Science Biology Chemistry

04/30/20

Biology Calculation
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Science Chemistry

04/30/20

Question in the description, can you please explain how you got the answer, thank you
How many moles of sodium sulfate are formed when 13.2 moles of sulfuric acid reacts with 30.6 moles of sodium hydroxide? Which reactant is limiting? How many moles of the excess reactant will... more
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Science Chemistry

04/30/20

Question in the description, can you please explain how you got the answer, thank you
What is the greatest amount of copper IV nitrate in moles that can be made with 24.3 mol copper II chloride and 20.9 mol sodium nitrate? Which reactant is limiting? How many moles of the... more
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Science Chemistry

04/29/20

Replace one word to make it true
An excess reagent is completely consumed in a chemical reaction
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Science

04/29/20

what is the identity of a sample that has a volume of 3.26cm3 and a mass of 28.5g
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Science

04/29/20

the equation for anaerobic respiration?
7th grade science problem
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Science Chemistry

04/29/20

The statement is false and replace one word to make it true
The limiting reagent is used to calculate the actual yield.
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Science Social Studies

04/29/20

Elephants travel
Elephants travel a __________ mile loop during their yearly migration.   a 200  b 300  c 400  d 500
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Science

04/29/20

Elephants Travel a Mile Loop of yearly migration
Elephants travel a __________ mile loop during their yearly migration.   a 200  b 300  c 400  d 500
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Science Biology

04/29/20

Can someone help me with science homework?
The puppy has the genotype Ll for hair length. What is the puppy’s phenotype for hair length? The puppy has the genotype cc for hair curliness. What is the puppy’s phenotype for hair curliness?... more
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Science Math Chemistry

04/29/20

what is the half-life in seconds?
A → B is a first order reaction. Using the data below, what is the half-life in seconds? 0 sec, [A] = 1.22 M 3 sec, [A] = 0.86 M 6 sec, [A] = 0.61 M 9 sec, [A] = 0.43 M 12 sec, [A] = 0.31 M 15 sec,... more
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04/29/20

Describe how the processes of boiling, sublimation, and efflorescence are similar.
Describe how the processes of boiling, sublimation, and efflorescence are similar.
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04/29/20

Consider the following list of compounds: MgSO4, C2H2, CH4, CaO. Which compounds are most likely to dissolve in water?
Consider the following list of compounds: MgSO4, C2H2, CH4, CaO. Which compounds are most likely to dissolve in water?
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04/29/20

Using data from the figure, graph the density as a function of the temperature for liquid water from 100°C to 4°C.
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04/29/20

Hydrogen fluoride (HF) has a lower boiling point than water (H2O), even though fluoride (F) has a greater electronegativity than oxygen (O). Why do you think that is?
Hydrogen fluoride (HF) has a lower boiling point than water (H2O), even though fluoride (F) has a greater electronegativity than oxygen (O). Why do you think that is?
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04/29/20

Printers often use surfactants in the printing of paper with ink. Explain why this might be.
Printers often use surfactants in the printing of paper with ink. Explain why this might be.
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04/29/20

Why is water (H2O) a liquid at room temperature while carbon dioxide (CO2) is a gas? What’s different about their structures that results in very different properties?
Why is water (H2O) a liquid at room temperature while carbon dioxide (CO2) is a gas? What’s different about their structures that results in very different properties?
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04/29/20

If 1 mole of each of the solutes listed below is dissolved in 1 L of water, which solute will have the greatest effect on the vapor pressure of its respective solution?

Which is the correct answer?A) C6H12O6B) CaSO4C) KBrD) MgCl2
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