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
Reil [10]
3 years ago
12

What is the main function of a vacuole in a cell?

Chemistry
1 answer:
snow_tiger [21]3 years ago
3 0
TO hOlD dEm liQuiDs boiIII

Provide the plant with support, storage for waste or nutrients, can also store water
You might be interested in
1. A 5.04 mL sample of Cu has a mass of 45 grams. What is the density of Cu? Show units in final answer
babunello [35]
I think the answer is number D…. I think
4 0
3 years ago
What are some examples of lipids?
Anestetic [448]
Saturated fat, milk, cheese, and meat.
3 0
3 years ago
What is meant by solvation?
Kamila [148]
Solvation describes the interaction of solvent with dissolved molecules.
6 0
3 years ago
You’ll soon make two pieces of ice with the approximate shapes shown in the image. Both pieces of ice have the same mass and vol
Montano1993 [528]
Is there an image? I'll stay to help you.
3 0
3 years ago
An air tight freezer measures 4 mx 5 m x 2.5 m high. With the door open, it fills with 22 °C air at 1 atm pressure.
____ [38]

Answer:

(a) Density of the air = 1.204 kg/m3

(b) Pressure = 93772 Pa or 0.703 mmHg

(c) Force needed to open the door =  15106 N

Explanation:

(a) The density of the air at 22 deg C and 1 atm can be calculated using the Ideal Gas Law:

\rho_{air}=\frac{P}{R*T}

First, we change the units of P to Pa and T to deg K:

P=1 atm * \frac{101,325Pa}{1atm}=101,325 Pa\\\\ T=22+273.15=293.15^{\circ}K

Then we have

\rho_{air}=\frac{P}{R*T}=\frac{101325Pa}{287.05 J/(kg*K)*293.15K} =1.204 \frac{kg}{m3}

(b) To calculate the change in pressure, we use again the Ideal Gas law, expressed in another way:

PV=nRT\\P/T=nR/V=constant\Rightarrow P_{1}/T_{1}=P_{2}/T_{2}\\\\P_{2}=P_{1}*\frac{T_{2}}{T_{1}}=101325Pa*\frac{7+273.15}{22+273.15}=101,325Pa*0.9254=93,772Pa\\\\P2=93,772 Pa*\frac{1mmHg}{133,322Pa}= 0.703 mmHg

(c) To calculate the force needed to open we have to multiply the difference of pressure between the inside of the freezer and the outside and the surface of the door. We also take into account that Pa = N/m2.

F=S_{door}*\Delta P=2m^{2} *(101325Pa - 93772Pa)=2m^{2} *7553N/m2=15106N

7 0
3 years ago
Other questions:
  • 5 example of dilute solution
    14·2 answers
  • I don’t understand this, can you help me?
    8·1 answer
  • Why are only some minerals found as native minerals? For example, iron and aluminum are almost never found as native elements in
    7·1 answer
  • What discovery by Ørsted led to the development of electromagnets? A Electric currents produce magnetic fields. B Magnetic field
    14·2 answers
  • Clay has a negative charge. What (3) nutrients need by plants have a<br> positive charge?
    7·1 answer
  • What is the molar mass for N5O9
    7·1 answer
  • What major gases are absorb by the ocean
    12·1 answer
  • Draw an energy flow diagram showing the energy transformation from one form to another.
    14·1 answer
  • Imagine that a new planet was discovered in our solar system. Answer the following questions based on the patterns discovered by
    11·1 answer
  • Why we add PH10 When we determine the zn ion​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!