3,291 Answered Questions for the topic Science

Chem 105, Please help! super confused and lost on these!

Calculate the volume of 0.550-M NaOH solution needed to completely neutralize 98.3 mL of a 0.630-M solution of the monoprotic acid HNO3. 80.96 mL of a solution of the acid H2C2O4 is... more
Science Chemistry Writing

11h

Creative writing piece

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

13h

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

“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.

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) :)

4d

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.
Science Chemistry

4d

which element is heavier strontium or zirconium

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

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.
Science Chemistry

8d

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

11d

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%

12d

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
Science Chemistry

13d

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
Science Biology Ecology

15d

I need help with my ecology assignment

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

Dimensional Analysis

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

17d

What process controls number of cells in various tissue?

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. ---
Science Chemistry Physics

19d

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
Science Chemistry Physics

19d

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
Science Math Physics

19d

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

20d

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
Science

23d

Which vaccine was invented by Louis Pasteur?

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.