4,347 Answered Questions for the topic Science

Science Chemistry

01/21/21

Could somebody tell me how i would go about solving this chemistry problem and what answer I should get?
(a) How many electron pairs surround an atom of boron (B, element 5) bonded in thecompound BCl3?(b) How many electron pairs surround an atom of nitrogen (N, element 7) in thecompound NF3?(c) Write... more
Follows • 2
Expert Answers •1
Science Math Chemistry

01/21/21

Could somebody tell me how i would go about solving this chemistry problem and what answer I should get?
A seashell that is composed largely of calcium carbonate reacts with a solution of HCl. As aresult, 1500 mL of dry CO 2 gas at STP is produced. The other products are CaCl 2 and H 2 O.a.) How many... more
Follows • 1
Expert Answers •1
Science Chemistry

01/21/21

Could somebody tell me how I would go about answering this chemistry problem and what answers I should get?
For each reaction listed, identify the proton donor or acid and the proton acceptor or base. Label eachConjugate acid-base pair.
Follows • 2
Expert Answers •1

01/21/21

How do I answer these physics questions and what answer should I get?
A 0.5 kg ball that is tied to the end of a 1.5 m light string is revolved in a horizontal plane, withthe string making a 30 o angle with the vertical.(a) Draw the free-body diagram for a conical... more
Follows • 2
Expert Answers •1

01/21/21

How do I answer these physics questions and what answer should I get?
You want to design the automobile racing circuit in Los Angeles to attract tourists to boosteconomy during Spring. First, you design the banked road for the racing cars to speed at 100mphfor a... more
Follows • 1
Expert Answers •1

01/21/21

Halogenalkanes and alcohols?
What type of intermolecular force is found in haloalknes and alcohols? And why does alcohols have a much higher boiling points than haloalkanes?
Follows • 2
Expert Answers •1
Science Math Physics

01/21/21

Energy Conservation (Physics)
A Tennis ball of 120 Kg is dropped from 5m height. Ignore the air resistance, What is the speed of the ball when it hits the ground.
Follows • 0
Expert Answers •1

01/20/21

Please please help me with one question. please ASAP. please
Give the following compound's base name.A.) 2-penteneB.) 2-octeneC.) 2-octane
Follows • 1
Expert Answers •1

01/20/21

Please help me with one question. please asap. please
Give the following compound's base name.A.) 2-penteneB.) 2-octeneC.) 2-octane
Follows • 1
Expert Answers •1

01/20/21

AP Environmental Science Question Pls Help
You have heard that some shipping and transportation companies are considering a switch from gasoline and diesel to hydrogen fuel cells in their ground vehicles. These companies may ask the... more
Follows • 1
Expert Answers •1

01/20/21

Centripetal Acceleration
1: NASA uses large centrifuge to study the effects of large forces on astronauts prior to their going into space. A subject in the 20-G centrifuge, which has a radius of 8.9 m, can have a... more
Follows • 1
Expert Answers •1

01/20/21

Pathophysiology Cancer Clinical Scenario Question

A 48-year-old man presents at his health care clinic with complaints of leg weakness. He is a heavy smoker and has had a productive cough for years. Subsequent diagnostic tests reveal he has a... more
Follows • 1
Expert Answers •1

01/20/21

Halogenalkanes properties?
What are Halogenalkanes? What type of intermolecular force do they have and like why do they have such low boiling points? Heard the number of carbon in the chain plays a big role in this but I... more
Follows • 2
Expert Answers •1

01/20/21

Molecule Polarity Arranging?

Arrange the following substances according to increasing polarity.With Motivation/Justification.a) PH3, NH3, SbH3, AsH3b) Cl2, HF, H2Oc) AlCl3, KCl, Cl2, PCI3thanks for any answer in advance!
Follows • 1
Expert Answers •1

01/20/21

Chemical reactions?
How do you balance and name chemical reactions? What are the rules and steps? Also how do you predict the products? For example- B2O3+NaOH——Na2BO3+H2O ? How you do you balance and name this?
Follows • 2
Expert Answers •1

01/20/21

Combustion of C13H18O2?

Ibuprofen is an anti-inflammatory medicine write and balance the reaction formula for the complete combustion of C13H18O2(ibuprofen). And explain the process step by step. So I get that when it... more
Follows • 2
Expert Answers •1

01/20/21

Which one is a dipole and why? Isomers

These are three isomers of dibromobenzene as follows in the list down belowSo Which molecule or molecules are dipoles and why? How does their structural formula play a role in this? Justification/... more
Follows • 2
Expert Answers •1

01/20/21

Chemical bonding word problem

Somebody help? I’m stuck with this question Warm desert winds sweep into your hotel room in Marrakech. The air conditioning has broken down and you have a very hard time sleeping due to the heat.... more
Follows • 1
Expert Answers •1

01/19/21

Pathophysiology/Cancer Question
Explain the mechanisms whereby chemotherapy and irradiation are able to destroy cancer cells, while having less or no effect on normal cells. Any help with this question would be greatly... more
Follows • 1
Expert Answers •2

01/19/21

Angular Kinematics
Hello, I am struggling in my science class and I'm not sure how to do the unit we are on so I was wondering if someone could give me the answers and how to solve them so I can do better. Thank you!... more
Follows • 1
Expert Answers •1
Science Chemistry

01/19/21

How many grams of aluminum will be needed
How many grams of aluminum will be needed to react to 50g of iron (III) oxide needs to fully react wit the equation FE2O3 + 2AI(S) = AI2O3(S) + 2 Fe (S)
Follows • 1
Expert Answers •1

01/17/21

physics question?
On October 14, 2012, Felix Baumgartner, with a mass of 71 kg, set a record for the highest parachute jump when he jumped from a platform 38,000 m about the surface of the Earth.a) What was Felix’s... more
Follows • 1
Expert Answers •1

01/16/21

physics question
A planet of radius R and density ρ is struck by another planet with a much lower density. With time, the two coalesce into a new planet of radius 3R and a density of ½ ρ. By what factor is the... more
Follows • 1
Expert Answers •1
Science Math Physics

01/15/21

An object with a mass of 3 kg is dropped from the top of a building. Before it strikes the ground, the object’s speed is 11 m/s.
What was its gravitational potential energy (relative to the ground) the instant the object was dropped? Neglect friction.
Follows • 1
Expert Answers •1

01/13/21

Describe the difference between gene and chromosomal mutations, and how mutations in gametes may result in phenotypic changes in offspring.
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.