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
melisa1 [442]
3 years ago
15

(Please help ASAP I will mark brainliest!! (: )Which of the following describes what happens when a cell uses energy to transpor

t something across the cell membrane?
1.osmosis
2.diffusion
3.passive transport
4.active transport
Chemistry
2 answers:
Andreas93 [3]3 years ago
4 0

4. is the answer, or not dont take my word for it.

mr Goodwill [35]3 years ago
3 0

Answer: 4. Active Transport

You might be interested in
A patient needs 40.0 mg of antibiotic per kilogram of body weight each day. If the patient weighs 55 kilograms.
White raven [17]

2200 mg of antibiotic

Explanation:

Given that 40 mg of antibiotic/kg of the bodyweight is given.

If patient is 55 kg then  the dose of antibiotic will be

if 40/1000000 is done then we can get antibiotic in kg/kg of the weight

= 0.00004 kg of antibiotic per kg

0.00004*55 ( to know how much 55 kg person will require)

= 0.0022 kg

This 0.0022 value will be converted to mg

0.0022*10^6

= 2200 mg of antibiotic will be given to a 55kg patient.

4 0
3 years ago
How does the DNA of a daughter cell compare to the DNA of the parent cell in asexual reproduction?
Rufina [12.5K]

Answer:

The Answer is  B

Explanation:

I hope this helps ;)

4 0
2 years ago
For the reaction Na2CO3+Ca(NO3)2⟶CaCO3+2NaNO3 how many grams of calcium carbonate, CaCO3, are produced from 79.3 g of sodium car
Alexus [3.1K]

Answer:

74.81 grams of calcium carbonate are produced from 79.3 g of sodium carbonate.

Explanation:

The balanced reaction is:

Na₂CO₃ + Ca(NO₃)₂ ⟶ CaCO₃ + 2 NaNO₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

  • Na₂CO₃: 1 mole
  • Ca(NO₃)₂: 1 mole
  • CaCO₃: 1 mole
  • NaNO₃: 2 mole

Being the molar mass of the compounds:

  • Na₂CO₃: 106 g/mole
  • Ca(NO₃)₂: 164 g/mole  
  • CaCO₃: 100 g/mole
  • NaNO₃: 85 g/mole

then by stoichiometry the following quantities of mass participate in the reaction:

  • Na₂CO₃: 1 mole* 106 g/mole= 106 g
  • Ca(NO₃)₂: 1 mole* 164 g/mole= 164 g
  • CaCO₃: 1 mole* 100 g/mole= 100 g
  • NaNO₃: 2 mole* 85 g/mole= 170 g

You can apply the following rule of three: if by stoichiometry 106 grams of Na₂CO₃ produce 100 grams of  CaCO₃, 79.3 grams of Na₂CO₃ produce how much mass of  CaCO₃?

mass of CaCO_{3} =\frac{79.3 grams of Na_{2} CO_{3} *100 grams of of CaCO_{3}}{106 grams of Na_{2} CO_{3}}

mass of CaCO₃= 74.81 grams

<u><em>74.81 grams of calcium carbonate are produced from 79.3 g of sodium carbonate.</em></u>

6 0
3 years ago
Boiling and melting points exploration<br>​
juin [17]

Answer:

Boiling- 212° F melting- 32°F

Explanation:

6 0
3 years ago
Mr. Anthony has set up the lab many times for the experiment with acids and bases using litmus paper. In fact, he says he can pr
DiKsa [7]

Answer :script memory

Explanation:Script memory refers

to a particular theoretical

memory for the typical activities

that take place

during regular events.

He already knew that Blue litmus would turn red in an acid and red litmus turns blue in a base

5 0
3 years ago
Other questions:
  • The table below gives the atomic mass and relative abundance values for the three isotopes of element M.
    10·1 answer
  • Brainly or jiskha<br><br><br> choose wisely
    5·2 answers
  • Which of the following is the conjugate base of phosphoric acid? *
    7·1 answer
  • Please help with these two thank you!
    5·1 answer
  • How many grams of Cl2 are in 1.20 x 1024 Cl atoms?
    7·1 answer
  • How are real Gases Different from ideal Gases?
    11·1 answer
  • (a) The first step in ozone formation in the upper atmosphere occurs when oxygen molecules absorb UV radiation of wavelengths ≤
    5·1 answer
  • Which family of elements is listed in order of increasing atomic radius?
    10·1 answer
  • Ok we trying this again. so just in case if the picture isnt showing, here are the questions:
    5·1 answer
  • Is "average rainfall is 31.96 inches in miami" a climate or weather
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!