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
kramer
3 years ago
6

Rachel wants to test how sunlight impacts plant growth over time. She will add varying amounts of light to different sets of pla

nts. The sunlight is a(n) * A. Controlled variable B. Independent variable C. Dependent variable This is a science question btw
Chemistry
1 answer:
Elena-2011 [213]3 years ago
8 0

Answer:

B. Independent variable

Explanation:

In an experiment, the independent variable is the variable that the experimenter manipulates or changes in order to effect a response in another variable, called the dependent variable.

In this experiment where Rachel adds varying amount of light in order to see how it impacts plant growth over time. The independent variable is the SUNLIGHT because it is what is changed or manipulated by Rachel. The dependent variable is the plant growth.

You might be interested in
A ball is thrown straight up into the air with a speed of 13 m/s. If the ball has
nataly862011 [7]

Answer:

The total energy, i.e. sum of kinetic and potential energy, is constant.

i.e. E = KE + PE

Initially, PE = 0 and KE = 1/2 mv^2

At maximum height, velocity=0, thus, KE = 0 and PE = mgh

Since, total energy is constant (KE converts to PE when the ball is rising),

therefore, KE = PE 

or, 1/2 mv^2 = mgh

or, h = v^2 /2g = 13^2 / (2x9.8) = 8.622 m

Hope this helps.

5 0
3 years ago
Which is common to the life cycles of both flowering and non-flowering plants?
Stolb23 [73]

Answer:

2 stay dormant

bbdndndn

4 0
3 years ago
Read 2 more answers
if 0.3 moles of carbon reacts completely with 0.3 moles of molecular oxygen, what is the yield in Percent of 6.6 g of CO2 are fo
Anettt [7]
Answer is:<span>the yield is 50%.
</span>
Chemical reaction: C + O₂ → CO₂.
n(C) = 0.3 mol; amount of substance.
n(O₂) = 0.3 mol.
From chemical reaction: n(C) : n(CO₂) = 1 : 1.
n(CO₂) = 0.3 mol.
M(CO₂) = 44 g/mol; molar mass of caron(IV) oxide.
m(CO₂) = n(CO₂) · M(CO₂).
m(CO₂) =0.3 mol · 44 g/mol.
m(CO₂) = 13.2 g; mass of carbon(IV) oxide.
the yield = 6.6 g ÷ 13.2 g · 100%.
the yield = 50%.
8 0
3 years ago
Ammonium hydroxide is _____.<br> an acid<br> a base<br> a neutral
Igoryamba
Ammonium hydroxide is basic
5 0
2 years ago
Why is a very small amount of cerium oxide nanoparticles need: A) the nanoparticles are elements
irina [24]
Have a high suface area to volume ratio
7 0
3 years ago
Other questions:
  • You are playing a game “will it float?” In this game, you are given a large, square can of tuna. If you know the density of wate
    12·1 answer
  • What 5 equipment do you needs to mix a chemical solution
    13·2 answers
  • In the Bee movie what does normal mean in the hive?
    11·1 answer
  • As you move left to right across a period, which of the following always increases?
    12·2 answers
  • 46.6 grams of mercury II sulfate (HgSO4) reacts with an excess of sodium Chloride (NaCl). How many grams of mercury II chloride
    6·1 answer
  • Ethanol has a density of 0.789 g/cm3. What is the mass of 423 cm3 of ethanol? M = (D)(V)
    13·1 answer
  • If the earth was a guava fruit, the space where the seeds are would be the core/mantle​
    15·2 answers
  • A. Moles of O2, needed to produce 7 moles of product?
    12·1 answer
  • What may form when magma comes to the surface?
    7·1 answer
  • Help I Will Mark Brainlist !! (ATTACHED IMAGE BELOW) Which of the diagrams below would be the FASTEST? _____ Why? Which of the d
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!