4,349 Answered Questions for the topic Science

10/25/22

An elevator is descending at a velocity of -2 m/s with an acceleration of +3.0 m/s^2 .

In this "elevator problem" with known velocity and acceleration, you must construct a free-body diagram of the elevator or the person inside and state whether the velocity is increasing or decreasing. more
Follows • 1
Expert Answers •1

10/25/22

How much Acetic Acid 5 %, in pint, is needed to prepare a 1000 mL of a 1 % Acetic Acid Solution?
Follows • 2
Expert Answers •1
Science Chemistry

10/24/22

80.0 g sample of a gas was heated from 25∘C to 225∘C. During this process, 346 J of work was done by the system and its internal energy increased by 6905 J. What is the specific heat of the gas?
Follows • 2
Expert Answers •1
Science Chemistry

10/24/22

What is the pH?
What is the pH of a solution of 0.300 M HNO₂ containing 0.220 M NaNO₂? (Ka of HNO₂ is 4.5 × 10⁻⁴)
Follows • 2
Expert Answers •1
Science Chemistry

10/24/22

How to prepare buffer?
What ratio of CH₃NH₂ to CH₃NH₃⁺ is needed to prepare a pH 10.30 buffer? (Kb for CH₃NH₂ is 4.4 × 10⁻⁴)I got 0.23 but it said I was off by a factor of 2
Follows • 2
Expert Answers •1
Science Chemistry

10/24/22

What is the pH?
What is the pH of a 0.450 M solution of Ca(NO₂)₂ (Ka of HNO₂ is 4.5 × 10⁻⁴)?
Follows • 2
Expert Answers •1
Science Biology Chemistry

10/20/22

I'm making a dating profile for 4 different organelles: Nucleolus, Ribosomes, Cytoskeleton, and Chloroplast. I need a theme song, pick up line, functions, and where they can be found. It's due Friday

Making a dating profile for Bio One
Follows • 1
Expert Answers •1

10/19/22

I'm making a dating profile for 4 different organelles: Nucleolus, Ribosomes, Cytoskeleton, and Chloroplast. I need a theme song, pick up line, functions, and where they can be found.
Follows • 0
Expert Answers •1
Science Chemistry

10/18/22

how many mL of LiOH?
In the titration of 55.0 mL of 0.400 M HCOOH with 0.150 M LiOH, how many mL of LiOH are required to reach the equivalence point?
Follows • 1
Expert Answers •1
Science Chemistry

10/18/22

How many milliliters?
How many milliliters of 0.20 M HCl is required to neutralize 90.0 mL of 0.80 M NaOH?
Follows • 1
Expert Answers •1
Science Chemistry

10/18/22

What is the pH?
What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.040 mol of NaOH were added?
Follows • 2
Expert Answers •1
Science Chemistry

10/18/22

What is the pH?
What is the pH of a 1.0 L buffer made with 0.300 mol of HF (Ka = 6.8 × 10⁻⁴) and 0.200 mol of NaF to which 0.050 mol of HCl were added?
Follows • 2
Expert Answers •1
Science Chemistry

10/18/22

Determine if the following salt is neutral, acidic or basic.
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous... more
Follows • 1
Expert Answers •1
Science Chemistry

10/18/22

Determine if the following salt is neutral, acidic or basic.
Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous... more
Follows • 1
Expert Answers •1
Science Chemistry

10/18/22

What is the pH?
What is the pH of a 0.340 M solution of NaCN (Ka of HCN is 4.9 × 10⁻¹⁰)?
Follows • 1
Expert Answers •1

10/16/22

Perform a SWOT analysis for the scenario

Assumptions:All sites:⚫EHR available with access to all necessary applications by the coders. It is not known whether all applications will function remotely as they do in house; however, corporate... more
Follows • 1
Expert Answers •1
Science Chemistry

10/16/22

What is the value for pH?
What is the pH of a 0.710 M solution of NaCN (Ka of HCN is 4.9 × 10⁻¹⁰)?
Follows • 2
Expert Answers •1
Science Chemistry

10/16/22

HC₂H₃O₂(aq) + NaOH(aq) →
Complete the balanced molecular reaction for the following weak acid with a strong base. Be sure to include the proper phases for all species within the reaction.HC₂H₃O₂(aq) + NaOH(aq) →
Follows • 2
Expert Answers •1
Science Chemistry

10/16/22

NaClO(aq) + H₂SO₄(aq) →
Complete the balanced molecular reaction for the following weak base with a strong acid:NaClO(aq) + H₂SO₄(aq) →
Follows • 2
Expert Answers •1

10/16/22

help needed with physics problem
20Ω ----------------------/\/\/\/\/\/\/\/\---------------------- | ... more
Follows • 1
Expert Answers •2

10/16/22

Struggling with physics problem
A 30.0 μF capacitor initially charged to 30.0 μC is discharged through a 2.80 kΩ resistor. How long does it take to reduce the capacitor's charge to 15.0 μC?my answers, 0.37, 0.12, and 0.58 were... more
Follows • 1
Expert Answers •1
Science

10/15/22

The toy car traveled 10cm east and then moved 10cm west, what is the distance and displacement?

Follows • 0
Expert Answers •1
Science Biology

10/15/22

According to the theory of evolution by natural selection, which of the following is FALSE?
1) Individuals with certain heritable traits contribute more reproductively to the next generation than others without those traits.2) The individuals that survive to reproduce are a random sample... more
Follows • 1
Expert Answers •1

10/14/22

Coriolis Effect Question
Would an airplane flying from Fort Lauderdale, FL to Chicago, IL appear to be deflected left or right as it flies?AndWhich way would a ship from Melbourne, Australia going to Santiago Chile be... more
Follows • 1
Expert Answers •1
Science Chemistry

10/13/22

How much water?
How much distilled water must be added to 0.5 mL of 0.1 M FeCl3 to make it 0.001 M FeCl3 (in units of mL)?
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.