4,369 Answered Questions for the topic Science

Science Chemistry Writing

09/26/21

Creative writing piece
Write a creative writing piece please if anyone can help :)Write a creative writing piece on the famous chemist John Dalton
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Science Chemistry Physics

09/26/21

Write a creative writing piece please if anyone can help :)

Write a creative writing piece on the famous chemist John Dalton
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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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