4,365 Answered Questions for the topic Science

Science Biology

09/26/21

A study a population with genotypes BB, Bb, and bb that are in the following frequencies
A study a population with genotypes BB, Bb, and bb that are in the following frequencies: f(BB) = 0.35, f(Bb) = 0.3, and f(bb) = 0.35. Is this population at Hardy-Weinberg equilibrium (HWE)?... more
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09/26/21

“An object that was thrown upward is not a free fall” Do you agree on this statement? Explain your answer.
“An object that was thrown upward is not a free fall” Do you agree on this statement? Explain your answer.
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09/24/21

Chemistry help!

For the tetrahedral molecule, silicon tetrachloride, SiCl4(s), write the condensed electron configuration of a lone silicon atom, predict the hybridization in the molecule, and write an electron... more
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Science Physics

09/24/21

If the mass of an object is halved and it's velocity is doubled, it's momentum will not change. Explain?
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09/24/21

In an effusion experiment, it was determined that nitrogen gas, N2, effused at a rate 1.812 times faster than an unknown gas. What is the molar mass of the unknown gas?
(molar mass of N2 = 28.02 g/mol) Can u pleasee, give me the GRESA format of it?? (Given, Required, Equation, Solution, then answer) :)
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09/23/21

Algebra Chemistry Problem
A gold bar has a mass of 530,000 mg. The bar has a length of 5.2 cm a width of 2.1 cm and a density of 19.3 g/cm^3 Determine the height of the bar in millimeters. Show all work.
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Science Chemistry

09/22/21

which element is heavier strontium or zirconium
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09/21/21

Short basic physics knowledge question
The resultant force of all forces acting on the body is opposite to the direction of velocity. How the body is moving?Four possible choices:A) Speeding upB) Slowing downC) UniformlyD) It is not... more
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Science Chemistry

09/21/21

Does mixing vinegar and baking soda create a mechanical mixture or is a solution, if so, is it a synthesis reaction?
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09/19/21

Physics question about resistors
You are given six resistors each of value 10 ohms, how will you connect them to give a total of 10 ohms? I need this to draw a circuit diagram of this arrangement but am unable to figure it out.
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Science Chemistry

09/18/21

What is the formula of the hydrate?

the mass of beaker=74.22g , the mass of beaker and contents before heating = 96.43g , mass of beaker and contents after heating = 86.28g , and the chemical name of the anhydrous salt is barium... more
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09/15/21

Thermodynamics Basic principles, concept and definitions
Using local g = 9.807 m/s^2, and that its variation is -0.003 ft/s^2 per 1000 ft ascent. Find the height in meters where the weight of a given man is reduced by 0.3%
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09/15/21

Thermodynamics Basic principles, concept and definitions
A garden hose attached with a nozzle is used to fill a 10 gallon bucket. The inner dia of the hose is 2 cm and it reduces to 0.8 cm at the nozzle exit. If it takes 50 seconds to fill the water... more
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Science Chemistry

09/13/21

Laboratory procedure errors
Explain how the errors in laboratory procedure would affect the calculated percent of sand. (decrease, increase, or remain the same) and why. a bit of mixture got stuck in the film can when you... more
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09/12/21

Laboratory Mathematics percent solution
 Make 1800 mL of a 50% weight/weight acetone alcohol solution. Specific gravity acetone: 0.786 Specific gravity alcohol: 0.810 2. Calculate the dilution using 0.5 mL of urine and 8.5 mL of... more
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Science Biology Ecology

09/11/21

I need help with my ecology assignment

Question 1:  Which level of organization in an environment does the picture below represent? Explain. Questions... more
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09/10/21

Dimensional Analysis
1.) 0.0043g ----> mg2.) 9474 mm ----> cm3.) 360 um -----> dm4.) 67.3 KL -----> dL
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Science Anatomy

09/10/21

What process controls number of cells in various tissue?
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09/10/21

Time line on famous person

Time line of the life of the famous chemist / scientist John Dalton
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09/10/21

John Dalton scientist question

Please if someone can help :) Explain how John Dalton the famous chemist had an impact 1. Local-South florida --2.National the U.S.--3. International outside the U. S. ---
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Science Chemistry Physics

09/08/21

Use factor-label methods to convert metric units. Final answer must be in scientific notation form.
here is what i need to convert 9.5l to Gl
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Science Chemistry Physics

09/08/21

Use factor-label methods to convert metric units. Final answer must be in scientific notation form.
4. 10 hrs to sec5. A jeepney tried to overtake a car. The jeepney moves at 75km/hr while the carmoves 28,456 ft/hr. Convert the speed of the jeep to ft/hr to identify if the jeepney canovertake a car. more
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Science Chemistry Physics

09/07/21

A chemist needs 15.0 grams of ethanol for a reaction. If the density of ethanol is 0.789 g/ml, how many milliliters of alcohol should be used
help, how i am going to convert it to units
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Science Math Physics

09/07/21

A cab driver picks up a customer and delivers her...
A cab driver picks up a customer and delivers her 1.41 km away, driving a straight route. The driver accelerates to the speed limit and, upon reaching it, begins to decelerate immediately. The... more
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09/07/21

Explain the differences between ionic, covalent and hydrogen bonding with examples of each kind of bonding.
I have 8 hours of lectures and I have listened to them all but it can be very hard to pin point all the details since it is so much information and so much going back and forth on the same topics... more
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