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
SVEN [57.7K]
3 years ago
12

Select all that apply.

Chemistry
2 answers:
PtichkaEL [24]3 years ago
8 0

Answer:

Nitrogen , phosphorus and potassium are obtained by plants from the soil.

Explanation:

N,P.K are the most important plant nutrients,

<h2><u>Nitrogen :</u></h2>
  1. Nitrogen helps above grounded safety growth

     2. It provide dark green color to leaves.

<h2><u>Phosphorus:</u></h2>
  1. Phosphorus also help root growth

     2.Protect the plant from diseases.

<h2><u>Potassium:</u></h2>
  1. Potassium is needed for making of chlorophyll.
prohojiy [21]3 years ago
5 0
My guess is the last 2... <span>phosphorus and potassium</span>
You might be interested in
The relationship between moles and volume, when pressure and temperature of a gas are held constant, is: V/n =
Dvinal [7]

Answer:

If the moles of gas are tripled, the volume must also triple.

Explanation:

According to Avogadro law,

Equal volume of all the gases at same temperature and pressure have equal number of molecules.

The number of moles and volume are directly related to each other. By increasing the number of moles volume also goes to increase with same ratio.

When number of moles decreases the volume also goes to decrease at constant temperature and pressure.

Mathematical expression:

V ∝ n

V = Kn

V/n = k

When volume is changed from V₁ to V₂ by changing the number of moles from n₁ to n₂. Then expression will be,

V₁/n₁ = V₂/n₂

5 0
3 years ago
If the volume occupied by 0.500 mol of nitrogen gas at 0°C is 11.2 L, then the volume occupied by 2.00 mol of nitrogen gas at th
kiruha [24]
The  volume  occupied  by 2.00  moles of nitrogen  gas at  the same  temperature  and pressure  will be

 0.500  moles = 11.2 Liters
 what about 2 moles =? liters

by cross  multiplication

= 11.2 liters  x   2moles/ 0.500 moles  =  44.8  liters 
8 0
3 years ago
What's another name for mesh screen
olya-2409 [2.1K]
Another name for a mesh screen is a sieve.
7 0
3 years ago
What is the difrense between soft water and hard water?
Nutka1998 [239]
Hard water<span>... is </span>water<span> that contains an appreciable quantity of dissolved minerals (like calcium and magnesium). </span>Soft water<span>... is treated </span>water<span> in which the only ion is sodium. As rainwater falls, it is naturally </span>soft<span>. </span>
6 0
3 years ago
Solve the following division problem: (3.4 x 10^7)/(6.8 x 10^3) =
eduard

Answer:

5000

Explanation:

8 0
3 years ago
Other questions:
  • Question 9 (1 point)
    10·1 answer
  • Compared to the nonmetals in Period 2, the metals in Period 2 generally have larger
    15·1 answer
  • Which ONE of the following is an oxidation–reduction reaction? A) PbCO3(s) + 2 HNO3(aq) ––––&gt; Pb(NO3)2(aq) + CO2(g) + H2O(l)
    8·1 answer
  • What is a system called when neither energy nor matter is exchanged between the system and the surroundings?
    5·1 answer
  • Which compounds has more nonbonding electrons? a. butene b. ethane?
    5·1 answer
  • What is the SI unit for distance ?<br> <br> A) cm<br> <br> B) km<br> <br> C) m<br> <br> D) mm
    7·2 answers
  • How much water must be added to a 25 mL sample of 1.5 M sodium sulfate in order to make it 0.20 M?
    11·1 answer
  • The 3 particles of the atom are
    11·1 answer
  • Calculate the pH of a solution whose H3O+ concentration is 2.1 x 10-3 M. Is the solution acidc, basic, or neutral?
    13·1 answer
  • FORMATION of IONS
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!