4,347 Answered Questions for the topic Science

Science Biology Reading

04/06/22

Please if someone can help provide information
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.).
Follows • 1
Expert Answers •1

04/03/22

URGENT: please help with AP BIO
Sugar gliders and Northern flying squirrels are mammals that have many morphological similarities despite being genetically different. Both are nocturnal and have large eyes to help them see in the... more
Follows • 1
Expert Answers •1

04/02/22

A doctor orders 7mg of compazine, which is used to treat nausea, vertigo, and migraine headaches. If the stock solution is 4.0% (m/v) , how many milliliters are administered to the patient?
Answer must have 1 significant figure.
Follows • 2
Expert Answers •1

04/02/22

Physics Help Please- Lens
The actual light sensor size of a digital camera is 14.9 mm X 22.3 mm. You want to take a photograph of your friend, who is 2.0m tall. Your camera has a 50mm-focal-length lens. How far from the... more
Follows • 1
Expert Answers •1
Science Chemistry

04/02/22

chemistry question stoich
Calculate the volume needed to produce a 0.80M Ca(OH2) solution using 37 gram of Calcium Hydroxide MM=74.....I started doing M=mol/L0.80M=x/0.37Lthen..0.0296mol Ca(OH)2 x 74g/1molIs there a way to... more
Follows • 1
Expert Answers •1

04/01/22

Physics Thin Lens Equation Help Please

The actual light sensor size of a digital camera is 14.9 mm X 22.3 mm. You want to take a photograph of your friend, who is 2.0m tall. Your camera has a 50mm-focal-length lens. How far from the... more
Follows • 1
Expert Answers •1

03/30/22

The sum of (3.3 x 10 ^ 6) and (4.9 x 10 ^ 5) in CORRECT scientific notation is? (ASAP)
The sum of (3.3 x 10 ^ 6) and (4.9 x 10 ^ 5) in CORRECT scientific notation is? (ASAP)
Follows • 1
Expert Answers •1

03/30/22

Help needed with physics
A 1200 kg safe is 2.4 m above a spring when the rope holding the safe breaks. The safe hits the spring and compresses it 42 cm. What is the spring constant of the spring?
Follows • 1
Expert Answers •1

03/30/22

Help with physics question
A system in which only one particle can move has the potential energy shown in the figure. Suppose U1 = 92 J. What is the y -component of the force on the particle at y = 0.5 m ? What is the ... more
Follows • 1
Expert Answers •1

03/30/22

Help needed with physics question
A 58.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 2.70 m. What speed does he need at the bottom?Any help... more
Follows • 1
Expert Answers •1

03/29/22

To what volume must 1800 mL of a 0.2150 N solution must be diluted in order that the resulting solution will be 0.2000 N?
The answer should be rounded in 2 decimal places and for consistency of the atomic weights, round up to 1 decimal place. Example: Chlorine is 35.5 and Oxygen is 16. Sulfur is 32.1. etc.
Follows • 2
Expert Answers •1

03/29/22

If a 0.3911 gram sample of 95% sodium bicarbonate is titrated with 0.9387 N sulfuric acid, what volume of the acid is needed to produce an endpoint?
The answer should be rounded in 2 decimal places and for consistency of the atomic weights, round up to 1 decimal place. Example: Chlorine is 35.5 and Oxygen is 16. Sulfur is 32.1. etc.
Follows • 2
Expert Answers •1

03/29/22

Would this be the correct formula?
If an experiment required you to measure the emf in a solenoid by changing : The number of magnets the distance between the solenoid and the magnet the relative motion or velocity Would the... more
Follows • 2
Expert Answers •1
Science Chemistry

03/29/22

Write and balance the reaction of permanganate with iron (II).
Need help doing this please
Follows • 1
Expert Answers •1

03/26/22

Physics Concave lens Question Help please
An object is located to the left of a concave lens whose focal length is -35 cm. The magnification produced by the lens is m1 = 0.36.A. To decrease the magnification to  m2= 0.23, should the object... more
Follows • 1
Expert Answers •1

03/25/22

Full answer explanation to: Three resistors R1 = 3Ω, R2 = 6Ω and R3 = 9Ω are connected in series to each other and to a 36V battery. Calculate the value for the ammeter after the switch is closed.

Follows • 1
Expert Answers •1

03/24/22

Calculating Penetrance

For one of my homework questions it states that the penetrance for cancer amongst males is 60% and 10 males in the family inherits the allele for cancer. How many of these 10 men are expected to... more
Follows • 2
Expert Answers •1

03/23/22

What volume of the solution would produce 0.287 g of AgCl if 26 ml of a HCl solution required 26.25 ml of 0.095 N NaOH in titration?
Follows • 2
Expert Answers •1

03/23/22

If a 0.250 g sample of zinc oxide (95%) was treated with 50 ml of 1.123 N sulfuric acid,
what volume of 0.977 N sodium hydroxide would be required in the residual titration?
Follows • 2
Expert Answers •1

03/23/22

A 4.0520 g sample of hydrochloric acid, sp gr 1.18, required 44.15 ml of 0.9035 N sodium hydroxide in a titration.
Calculate the HCl content in %
Follows • 2
Expert Answers •1

03/23/22

Help? Using the half-reactions given in equations 1 & 2, write the balanced net ionic equation for the reaction of sodium oxalate and potassium permanganate.
1) 8H+ + MnO4- + 5e- → Mn2+ + 4H2O2) H2C2O4 → 2CO2 + 2H+ + 2e-
Follows • 1
Expert Answers •1

03/22/22

Use the Henderson-Hasselbalch equation to perform the following calculations.
Use the Henderson-Hasselbalch equation to perform the following calculations.The Ka of acetic acid is: 1.8 × 10–5. FW for sodium acetate, trihydrate (NaC2H3O2•3H2O) is 136.08 g/mol.• Buffer... more
Follows • 2
Expert Answers •1

03/20/22

Enthalpy of Reaction
Please do include a solution. Thank you!1. 3𝐻2(𝑔) + 𝑂3(𝑔) → 3𝐻2𝑂(𝑙)2. 𝑁2𝑂(𝑔) + 𝑁𝑂2(𝑔) → 3N𝑂(𝑔)3. 𝐶𝑎𝐶2(𝑠) + 2𝐻2𝑂(𝑙) → 𝐶𝑎(𝑂𝐻)2(𝑠) + 𝐶2𝐻2(𝑔)
Follows • 2
Expert Answers •1

03/20/22

First Law of Thermodynamics (Chemistry)
Please include a step-by-step solution. Thank you. Calculate the change in the internal energy of a system if 50 kJ of heat is added to it and if the system performs 20 000 J of work. Determine the... more
Follows • 2
Expert Answers •1

03/20/22

Stoichiometric Solutions
What is the step-by-step procedure solution and answers to these one? How many moles CO2 of is produced by the complete combustion of 58 g of butane (C4H10)?2C4H10 + 13O2 → 8CO2 +10H2O2. If 5.0... more
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.