4,365 Answered Questions for the topic Science

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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04/29/20

Calculate the boiling point elevation of a solution containing 43.8 g of glucose (C6H12O6) dissolved in 359.9 g of water. Calculate the freezing point depression for the same solution.
boiling point elevation = _____ degrees Celsiusfreezing point depression = ____ degrees Celsius
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Science Chemistry

04/28/20

how many grams of 206Hg will you have after 17.5 years?
210Pb has a half-life of 22.3 years and decays to produce 206Hg. If you start with 7.50 g of 210Pb, how many grams of 206Hg will you have after 17.5 years?The correct answer is 3.09But I keep... more
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Science

04/27/20

What question about the world around you could be answered using the scientific method?
must have a question with scientific method in it
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Science Biology

04/27/20

Fill in the genotypes for all 10 individuals on the pedigree attached. Use the letter A. This trait follows normal dominance rules. Aa shows the dominant trait.
Fill in the genotypes for all 10 individuals on the pedigree attached. Use the letter A. This trait follows normal dominance rules. Aa shows the dominant trait.
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Science Chemistry

04/26/20

How many alpha and beta particles are emitted in the decay series?
When 222Rn (Z = 86) decays in a 5-step series the product is 210Pb (Z = 82). How manyalpha and beta particles are emitted in the decay series?I understand how to find the alpha particles I just... more
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Science Chemistry

04/26/20

Calculate E°(cell) for the reaction
Calculate E°(cell) for the reaction, 2 IO3-(aq) + 10 Fe2+(aq) <=> 10 Fe3+(aq) + I2(aq) given the reduction potentials:Fe3+(aq) + e- <=> Fe2+(aq) , E° = 0.87 V2 IO3-(aq) + 10 e-... more
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