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
nordsb [41]
3 years ago
13

3. Which element is most important for growing crops?

Chemistry
1 answer:
madreJ [45]3 years ago
8 0

Answer:

B. hydrogen

Explanation:

that's because hydrogen is an element.

You might be interested in
What will determine the number of moles of hydronium in an aqueous solution of a strong monoprotic acid?.
marin [14]

Answer:

What will determine the number of moles of hydronium in an aqueous solution of a strong monoprotic acid? The amount of acid that was added.

Explanation:

3 0
2 years ago
Name a molecule that is small enough to enter the cell
Oksanka [162]

Answer:

oxygen molecule

Explanation:

I belive it is oxygen molecule

8 0
3 years ago
Read 2 more answers
Q4
Varvara68 [4.7K]

Answer:

Option C.

Ilegal dumping of waste

Explanation:

This is because non point source of pollution refers to source of pollution that are many and not directly one which is illegal or does not meet the legal term. This type of pollution does not have a point source, it has many sources and this type of pollution is cause by rainfall or precipitation. Where when the rain fall, it wash away the waste through to water bodies, causing pollution and endangering water bodies.

3 0
3 years ago
How much heat is required to increase the temperature of 100.0 grams of iron from 15.0oC to 40.2oC? (The specific heat of iron i
Ksenya-84 [330]
Answer is: 1160 J of heat Is required to increase the temperature.
m(Fe) = 100 g.
∆T = 40,2 - 15 = 25,2°C.
C(Fe) = 0,46 J/g•°C.
Q = m(Fe) • C • ∆T.
Q = 100 g • 0,46 J/g•°C • 25,2°C
Q = 1160 J.
C - specific heat.

3 0
3 years ago
Read 2 more answers
A 30.0-g piece of metal at 203oC is dropped into 400.0 g of water at 25.0 oC. The water temperature rises to 29.0 oC. Calculate
oee [108]

The specific heat of the metal is 2.4733 J/g°C.

Given the following data:

  • Initial temperature of water = 25.0°C
  • Final temperature of water = 29.0°C
  • Mass of water = 400.0 g
  • Mass of metal = 30.0 g
  • Temperature of metal = 203.0°C

We know that the specific heat capacity of water is 4.184 J/g°C.

To find the specific heat of the metal (J/g°C):

Heat lost by metal = Heat gained by water.

Q_{metal} = Q_{water}

Mathematically, heat capacity or quantity of heat is given by the formula;

Q = mc\theta

<u>Where:</u>

  • Q is the heat capacity or quantity of heat.
  • m is the mass of an object.
  • c represents the specific heat capacity.
  • ∅ represents the change in temperature.

Substituting the values into the formula, we have:

30(203)c = 400(4.184)(29 \; -\; 20)\\\\6090c = 1673.6(9)\\\\6090c = 15062.4\\\\c = \frac{15062.4}{6090}

Specific heat capacity of metal, c = 2.4733 J/g°C

Therefore, the specific heat of the metal is 2.4733 J/g°C.

Read more: brainly.com/question/18691577

8 0
2 years ago
Other questions:
  • How does thermal energy transfer when a room is heated by a furnace?
    14·2 answers
  • If a molecule contains two carbon atoms and four hydrogen atoms, what can you conclude about the bond between the carbon atoms?
    5·1 answer
  • . If 12 oranges cost $36.00, what is the cost for 20 oranges?
    15·1 answer
  • What have the scientific studies identified as the major cause of acid rain in the united states?
    5·1 answer
  • If atoms are not destroyed, what happens to them
    11·1 answer
  • What salt is formed by the reaction of potassium hydroxide and hydrochloric acid?
    8·2 answers
  • Arrange these Alkaline Earth metals from lowest to highest electronegativity: Ca, Be, Ba, Sr
    6·1 answer
  • Differences between alkalis, bases and acids? (answer for many points :) )
    10·1 answer
  • 50 POINTS !! I have a science project that I need help with its called pH
    14·2 answers
  • What kind of waves do light waves travel in and how do they move
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!