1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Radda [10]
2 years ago
13

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 s

hould be used?
Physics
1 answer:
harina [27]2 years ago
3 0
  • Mass=15g
  • Density=0.789g/ml

\\ \bull\tt\dashrightarrow Density=\dfrac{Mass}{Volume}

\\ \bull\tt\dashrightarrow Volume=\dfrac{Mass}{Density}

\\ \bull\tt\dashrightarrow Volume=\dfrac{15}{0.789}

\\ \bull\tt\dashrightarrow Volume=19.01mL

You might be interested in
A 1.0 kg mass is attached to the end of a vertical ideal spring with a force constant of 400 N/m. The mass is set in simple harm
Marina86 [1]

Answer:

v(0)=2m/s

Explanation:

The instantaneous velocity of a point mass that executes a simple harmonic movement is given by:

v(t)=\omega  *A*cos(\omega t + \phi)

Where:

\omega=Angular\hspace{3}frequency\\A=Amplitude\\\phi=Initial\hspace{3}phase

Express the amplitude in meters:

10cm*\frac{1m}{100cm} =0.1m

The angular frequency can be found using the next equation:

\omega=\sqrt{\frac{k}{m} }

Using the data provided:

\omega=\sqrt{\frac{400}{1} } =20

At the equilibrium position:

\phi=0

v(0)=20*(0.1)cos(20*0+0)=2*cos(0)=2*1=2m/s

6 0
3 years ago
Which of the following is an example of pure research? Creating new elements to study their properties Producing plastics that a
koban [17]
Creating new elements in order to study their properties is definitely pure research.
It has no earthly [known] application, since the elements don't even exist, whereas
for each of the other choices, you've stated the desired application as the reason
for the search.
6 0
3 years ago
Which statement accurately explains why the kinetic energy of the first rider is greater?
Dvinal [7]
Hey

The formula of kinetic energy is 1/2mv^2

So it depends on mass and velocity

As mass increases , kinetic energy increase .

So option b , the first rider had more mass is correct z
5 0
2 years ago
Read 2 more answers
What’s the answer to this problem ? with work pls !!
mars1129 [50]
This is the answer to Question 5

4 0
3 years ago
1. Indicate whether these objects or atoms are positively,<br> negatively or neutrally charged.
vovangra [49]

Answer:

Neutrally charged!!!!!!!!!!!!!!!!!!!!!

Explanation:

6 0
3 years ago
Other questions:
  • The Lyman series comprises a set of spectral lines. All of these lines involve a hydrogen atom whose electron undergoes a change
    9·1 answer
  • An object that is accelerating may be
    13·1 answer
  • Q3. What is the minim value of refractive index?
    14·2 answers
  • Second and third class levers both have __________.
    7·2 answers
  • Consider the activity and specificity of the three enzymes. Pepsin is most active in the human ________ and helps to digest ____
    10·2 answers
  • What does the trough of a wave refer to? A. the highest point on the wave B. the lowest point of the wave C. the midline of the
    6·2 answers
  • g the space in between two glass sheets has a volume of 0.025 m3. If the temperature of the gas is 290 K, what is the rms speed
    15·1 answer
  • Use your answers from questions 1–3 as the basis for the first section of your lab report. This section provides your reader wit
    5·1 answer
  • A meteor is approaching Earth. Which statement about its motion is true?
    10·2 answers
  • Which of the following statements is FALSE?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!