4,365 Answered Questions for the topic Science

Science

04/20/21

Robert studies ocean life. He observes that a species of octopus squirts a large cloud of black ink whenever a predator approaches.

Which of the following is a scientific question that Robert could ask about what he observed?A. Does a predator like the taste of an octopus more than the taste of a squid?B. Does releasing a cloud... more
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04/20/21

How many copper atoms are in your 25.0 mL of copper (ii) sulfate solution?
You need to use Avogadro's number in this question!
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04/20/21

How many sodium atoms are in 50 mL of salt (sodium chloride)?
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04/20/21

HELP BIOLOGY ITS URGENT
The following is a pre-mRNA sequence. (Recall the 3 things that need to be done to pre-mRNA before it can leave the nucleus.) Please edit and process this sequence to make it a mature mRNA... more
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Science Chemistry

04/20/21

An aqueous reaction is taking place in a liter of water that is being stirred in a 5-liter flask. If the entire reaction was transferred to a 2-liter flask, what's effect on the overall reaction rate?
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Science Biology Ecology

04/20/21

What are some good topics in biology to choose for an open discussion day in class?
Or current events that are interesting
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Science Statistics Spss

04/19/21

What Statistical Test do I use (SPSS)
I want to work out if the answer that two different programs produces are within an acceptable limit. Do I do a correlation or an ANOVA
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04/19/21

Air pressure is lowest in the lungs during which of the following points during inspiration or expiration?
Air pressure is lowest in the lungs during which of the following points during inspiration or expiration? A End of inspiration, when lung volume is lowest B End of inspiration, when lung... more
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Science Chemistry Physics

04/18/21

what is the total grams of potassium fluoride (molar mass= 58g/mol) needed to make 9.4 liter of a 6.17 molarity solution ?
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Science Chemistry

04/18/21

as pressure increases, the solubility of a gas

A)Increases B)DecreasesC)Pressure has no effect on the solubility of a gas
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Science Physiology

04/17/21

How does pottasium comes inside a cell after repolarization
In resting state the pottasium is inside the cell and during repolarization it will go out of cell so to continue the next cycle pottasium must come inside the cell how can it happen?
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Science Chemistry

04/17/21

Help please I have no I deal what im doing
1. For the following UNBALANCED reaction what is the mole ratio of H,O to B(OH),?BO (+ HOB(OH),A. 3 H 0:2 B(OH),B. 2 H20 : 3 B(OH), C. 2 H,0:1 B(OH), D. 1 H,0:1 B(OH)2. Lead(II) sulfide, Pbs,... more
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04/16/21

How agrin and also neuregulin work to maintain muscle viability ?
How agrin and also neuregulin work to maintain muscle viability ?
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04/16/21

Values of Young's, Bulks, and Shear Modulus of Elasticity of Different Materials.
Can you please give at least 10 examples of each and their values? Thank you!!
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Science Math Reading Writing

04/16/21

5 in = ___________ ft
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Science Math English Reading

04/16/21

What is the chances of getting a perfect score of 36 on the ACT when there is a 25% chance of getting 155 of them right and 20% chance of getting the other 60 right
So this is basically me wondering what the probability of getting a 36 on the ACT with completing guessing each and every problem. Just a curious question. Math has 5 answer choices for each and... more
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04/15/21

Can someone help me find the pressure? I would appreciate it, thank you!
A sample of gas at 5.00 x 10​ to the 5th power mmHg inside a rigid tank is cooled from 500.0​ celcius to 0.0​ celcius.What is the final pressure of the gas inside the tank?
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04/15/21

I need help solving in liters, can anyone help me please? It would be so much appreciated, thank you!
A gas sample initially has a volume of 178L, a temperature of 643K, and pressure of 292kPa. If the temperature is adjusted to 57K and the pressure is adjusted to 151kPa, what is the final volume in... more
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04/15/21

I need help solving this equation.. Can anyone help me? I need to be able to figure this out so I can move on. I would really appreciate it!
A gas sample initially has a volume of 0.2L and a temperature of 40.2K. If the other gas parameters are kept constant, and the volume is adjusted to 2.4L, what is the new temperature in K?
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04/14/21

Please help me, I would greatly appreciate it! I have to be able to understand this to move on!
Determine the final pressure when a constant volume of gas originally at 101.3 kPa is heated from 25​ celcius to 35​celcius.
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04/14/21

Need help before midnight, I am confused:/
A sample of gas has a pressure of 3 atm at 300 K. What will be the pressure if the sample is cooled to 200K?
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04/14/21

Need to solve before midnight! Please send help, thank you!
A gas sample initially has a temperature of 150K and a pressure of 409kPa. If the other gas parameters are kept constant, and the temperature is adjusted to 436K, what is the new pressure in kPa?
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04/14/21

Have to answer before midnight! Please help, thank you!
A gas sample initially has a pressure of 2atm and a volume of 58L. If the other gas parameters are kept constant, and the volume is adjusted to 4L, what is the new pressure in atm? 
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Science Chemistry

04/14/21

What is the empirical formula of a compound that contains 10.52 grams of nickel, 4.38 grams of carbon, 5.10 grams of nitrogen?
An empirical formula shows the smallest whole-number ratio of different atoms in a chemical substance. However, the simplest ratio does not always indicate the actual ratio in the chemical... more
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Science Chemistry

04/14/21

What is the empirical formula of monosodium glutamate (MSG) which contains 35.50% C, 4.77% H, 8.29% N, 13.6% Na, and 37.90% O?
An empirical formula shows the smallest whole-number ratio of different atoms in a chemical substance. However, the simplest ratio does not always indicate the actual ratio in the chemical... more
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