4,365 Answered Questions for the topic Science

04/21/22

Hello! What is the reactant for NaOH (aq) + CuSO4 (aq) and also for Al (s) + CuCl2 (aq)?

I'm having trouble understanding our chemical reactions lesson at the moment. I've tried looking at other examples online but I can't comprehend them well. Any answers are appreciated. Thank you!
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04/20/22

similarities and differences between plant and animal
1. two or three similarities and differences between plant and animal reproduction2. two or three similarities and differences between plant and animal development3. two or three similarities and... more
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04/20/22

similarities and differences between plant and animal
1. two or three similarities and differences between plant and animal gas exchange and transport/circulation2. two or three similarities and differences between plant and animal regulation of body... more
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04/20/22

Calculate the magnitude and direction of the resultant electric field at the origin due to these charges
A point charge 𝑞1 = +6.00 𝑥 10−9𝐶 is at the point 𝑥 = 0.800 𝑚, 𝑦 = 0.600 𝑚 and a second point charge 𝑞2 = −2.00 𝑥 10−9𝐶 is at the point 𝑥 = 0.800 𝑚, 𝑦 = 0 𝑚. Calculate the magnitude and direction... more
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Science Chemistry

04/19/22

Acid Equilibria Chemistry
‎AgNO3 (aq) is slowly ad‎ded to a sol‎ution with [Cl-] = 0.115 M and [Br-] = 0.264 M. A. W‎hat perce‎nt of the Br- rem‎ains unprecipi‎tated at the p‎oint at which AgCl(s) begins to precipita‎te?... more
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Science Chemistry

04/19/22

Kc Chem Questions
Which of the following is true ? a. H2S‎04 is a str‎ong acid ‎because it has 2 hydro‎gensb. Meth‎yl a‎mine (CH3NH2) is an e‎xample of an Arrheni‎us base.c. Str‎ong Bro‎nsted- Lowry acids has... more
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04/18/22

Physics 2: Interference Problem Please Help
An oil film ( n= 1.46) floats on a water puddle. You notice that green light  (520 nm ) is absent in the reflection. What is the minimum thickness of the oil film?I used the destructive... more
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04/18/22

Physics Constructive Interference- Please Help
A soap film (n=1.33) is 765 nm thick. White light strikes the film at normal incidence.What visible wavelengths will be constructively reflected if the film is surrounded by air on both sides?
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Science Physics Optics

04/17/22

Physics problem: find the depth of the pool
A person looks at the surface of water with an angle of 30 degrees and sees a coin 0.5 m further than it really is. What is the depth of the pool.The answer I should get is around 16 cm.
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04/16/22

It is a food storage tissue that forms separately from the embryo while the seed is still attached to the parent plant.
It is a food storage tissue that forms separately from the embryo while the seed is still attached to the parent plant.a.Aleurone layerb.Ectodermc.Endodermd.Mesoderm
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04/16/22

Example of an Interview script for adults about hydrometeorological disasters experiences?
Example of an Interview script for adults about hydrometeorological disasters experiences?
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Science Chemistry

04/15/22

What is Identity of Acid?
An un‎known 98.0% by m‎ass dip‎rotic acid (i.e. donates two hy‎drogen ions or with a formula of H2A) rea‎gent has a den‎sity of 1.98 g/mL. Asta wa‎nted to deter‎mine the ide‎ntity of the acid. He... more
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Science Math Probability

04/15/22

Probability Question
Let X be a random variable such that E[X] = 2, E[X^3 ] = 9 and E[(X – 2)^3 ] = 0. What is the Var[X]?
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Science Chemistry

04/14/22

Kinetics Chemistry Questions
A kin‎etics experi‎ment was p‎erformed for the f‎ormation of a no‎vel comp‎ound, UNO, f‎rom its react‎ants, Ch‎emicals G, R, A, D, and E. Th‎e first six ru‎ns (Runs 1-6) w‎ere all perfor‎med at 301... more
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Science Chemistry

04/14/22

Electrochem Questions
Given :Al(s) / Al3+ (10.36 M)// Sn4+(0.086 M), Sn2+(0.54 M)/ PtA. w‎rite the h‎alf cell and o‎ver-all reaction.B. C‎alculate Ecell for the follow‎ing voltai‎c cell. write the h‎alf cell and... more
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Science Math Physics

04/13/22

Newtons Law Question
Calculate the distance between the center of the earth and the center of the moon at which the gravitational force exerted by the earth on an object is equal in magnitude to the force exerted by... more
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04/13/22

State an approx. amount of chemical energy “used” by your body, in one day. Your answer should be based on a recommended dietary energy input using units relevant for biological (dietary) energy.
Calculate your average power rating in horsepower and Watts*. This should be based on the energy assumed above.When running at about 10 mi/hr, an athletic human body consumes energy at a rate of... more
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04/13/22

A fridge's compressor motor consumes electrical energy at a rate of 500W when running. If it runs for 35% of each day, and a kWh costs about .10$, how much does it cost to run the fridge for a month?
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04/12/22

a journal paper which has included any correlation statistical analyses
Subject: Psychology-Search for a journal paper that has included any correlation statistical analyses[Type the name and URL of the paper]-And report the following: 1) Keywords you use in this... more
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04/12/22

681 person divided into 12 vans and 9 busses
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Science Physics

04/12/22

Please help (urgent) TYVM!
Wire A has a resistance of 12 2. Wire B, of the same material, is twice as long and has half the cross-sectional radius of wire A. What is the resistance of wire B?
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Science Biology Botany

04/10/22

Which of the following plants most likely to remain standing after a typhoon?
Which of the following plants most likely to remain standing after a typhoon?a.Santanb.Bambooc.Coconutd.Banana
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Science Math English History

04/10/22

Cover all subject

Hello do you cover all subjects on the GED test
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04/08/22

Balanced equation

How would you write a balance equation between sodium hydroxide and oxalic acid ?
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Science Biology

04/07/22

(egg sharing for kick-backs at clinics, selling DNA/eggs/sperm, etc.).
What are some of the loopholes of the legality of IVF/ART babies (egg sharing for kick-backs at clinics, selling DNA/eggs/sperm, etc.).
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