4,347 Answered Questions for the topic Science

Science Chemistry

09/22/21

which element is heavier strontium or zirconium
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1
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?
Follows • 2
Expert Answers •1

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.
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1

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%
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1

09/10/21

Dimensional Analysis
1.) 0.0043g ----> mg2.) 9474 mm ----> cm3.) 360 um -----> dm4.) 67.3 KL -----> dL
Follows • 2
Expert Answers •1
Science Anatomy

09/10/21

What process controls number of cells in various tissue?
Follows • 1
Expert Answers •1

09/10/21

Time line on famous person

Time line of the life of the famous chemist / scientist John Dalton
Follows • 1
Expert Answers •1

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. ---
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •2
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
Follows • 2
Expert Answers •1

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
Follows • 1
Expert Answers •1
Science

09/04/21

Which vaccine was invented by Louis Pasteur?
Follows • 0
Expert Answers •1

09/03/21

Incidence Rate Question
What is the cumulative incidence and incidence rate of cancer in decimal form?Participant A: • Age: 7• Outcome: CancerParticipant B• Age: 2• Outcome: No CancerParticipant C• Age: 2• Outcome:... more
Follows • 1
Expert Answers •1

08/31/21

Are dream symbols based in any scientific fact or is it just pseudo science like crystals? 
For example, does seeing birds in dreams really represent joy, harmony, balance, and love or is that some random nonsense?
Follows • 1
Expert Answers •1
Science

08/31/21

If step 1 is removed, which statement best describes the effects of this missing step on the carbon cycle?
Chris wrote a few steps to describe how carbon circulates between the ground and living organisms.Step 1. Plants absorb carbon dioxide in the air and use it to make their own food using... more
Follows • 1
Expert Answers •1
Science

08/31/21

Daimonds have a density of 3.5 g/cm^3 how big is a diamond that has a mass of 0.10 g
Follows • 1
Expert Answers •1

08/30/21

Scientific Notation

1.) 30/ 60,000 x 0.052.) 450 x 0.008 x 0.2/ 20,000 x 40 x 0.18
Follows • 2
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.