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
Pachacha [2.7K]
3 years ago
7

2. What effect does amount of water have on plant growth?

Chemistry
2 answers:
cluponka [151]3 years ago
8 0

Answer:

2.

independent variable:amount of water

dependent variable:plant growth

3.

independent variable:student's bedtime

dependent variable: students energy level

4.

independent variable:exercise

dependent variable: strength

5.

independent variable:persons height

dependent variable:ability to play basketball

Explanation:

Stella [2.4K]3 years ago
3 0

Answer:

<u>2. It's a dependent variable,  3. Dependent variable,  4. Dependent variable,  5. Independent variable</u>

Explanation:

  • As it's seen that plants and grow without the water which is their prime source of development and tissue takes nutrients from the soil and hence necessary for the growth even cactus needs small quantities of moisture or water but the water itself depends on the availability of rain.
  • A student bedtime behavior is affected by his/her energy levels of the body if he is tired will fall to sleep soon. Thus dependent
  • Similarly, exercise tones up the body muscles and which in turn leads to better performance of daily activities.
  • A person's height and basketball ability are different as one gradually develops a good height due to the stretching exercise of the muscles and hence independent ability.
You might be interested in
He following balanced equation shows the formation of water. 2H2 + O2 mc020-1.jpg 2H2O How many moles of oxygen (O2) are require
mrs_skeptik [129]

Answer : The correct option is, 13.7 mole

Solution : Given,

Moles of H_2 = 27.4 moles

The given balanced chemical reaction is,

2H_2+O_2\rightarrow 2H_2O

From the balanced chemical reaction, we conclude that

As, 2 moles of H_2 react with 1 moles of O_2

So, 27.4 moles of H_2 react with \frac{27.4}{2}=13.7 moles of O_2

Therefore, the number of moles of oxygen O_2 required are, 13.7 moles

7 0
3 years ago
Read 2 more answers
The conversion of cyclopropane to propene occurs with a first-order rate constant of . How long will it take for the concentrati
Gennadij [26K]

This is an incomplete question, here is a complete question.

The conversion of cyclopropane to propene occurs with a first-order rate constant of 2.42 × 10⁻² hr⁻¹. How long will it take for the concentration of cyclopropane to decrease from an initial concentration 0.080 mol/L to 0.053 mol/L?

Answer : The time taken will be, 17.0 hr

Explanation :

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 2.42\times 10^{-2}\text{ hr}^{-1}

t = time passed by the sample  = ?

a = initial concentration of the reactant  = 0.080 M

a - x = concentration left = 0.053 M

Now put all the given values in above equation, we get

t=\frac{2.303}{2.42\times 10^{-2}}\log\frac{0.080}{0.053}

t=17.0\text{ hr}

Therefore, the time taken will be, 17.0 hr

5 0
3 years ago
How many grams of oxygen gas (02) are needed to completely react with 9.30 moles
Luba_88 [7]

Answer:

223 g O₂

Explanation:

To find the mass of oxygen gas needed, you need to (1) convert moles Al to moles O₂ (via the mole-to-mole ratio from reaction coefficients) and then (2) convert moles O₂ to grams O₂ (via the molar mass). When writing your ratios/conversions, the desired unit should be in the numerator in order to allow for the cancellation of the previous unit. The final answer should have 3 sig figs because the given value (9.30 moles) has 3 sig figs.

4 Al + 3 O₂ ----> 2 Al₂O₃
^         ^

Molar Mass (O₂): 32.0 g/mol

9.3 moles Al          3 moles O₂              32.0 g
-------------------  x  ---------------------  x  --------------------  =  223 g O₂
                              4 moles Al               1 mole

6 0
2 years ago
Everyone in Mrs. Blaylock's science class must perform an experiment for the science fair this year. To begin this process, Mrs.
olga_2 [115]

How does the position of the Sun, moons, planets and stars affect a person's personality traits and daily behavior patterns

Explanation:

The question that cannot be answered scientifically from the given choices is "how does the position of the Sun, moons, planets and stars affect a person's personality traits and daily behavior patterns".

This problem is off the jurisdiction of natural science.

  • Scientific questions are usually empirical in nature and draws relationship between two variables.
  • Usually, one variable changes and the other is affected.
  • This problem stated is subjective and not scientific.
  • Humans have a wide range of personality traits.
  • This problem can be solved using a psychological analysis.

learn more:

Scientific process brainly.com/question/5003338

#learnwithBrainly

7 0
3 years ago
Project 1 Hypothesis Construction
alukav5142 [94]

The hypothesis should be; "Increasing the amount of ice increases the rate at which the ice will melt"

<h3>What is a hypothesis?</h3>

The term hypothesis refers to a tentative explanation that could be applied in order to explain an observation. When we give a hypothesis, it must be subjected to rigorous experimentation thus it can be confirmed or repelled by experiment.

Now, we can see that the question here is; "How does the amount of salt added to ice affect the rate at which the ice will melt?" This implies that the correct hypothesis here ought to have to do with the impact of the amount of ice in the affirmative.

Thus, the hypothesis should be; "Increasing the amount of ice increases the rate at which the ice will melt"

Learn more about hypothesis:brainly.com/question/13025783

#SPJ1

5 0
1 year ago
Other questions:
  • Which methods will help you properly identify pH with indicator paper? Check all that apply. Set a piece of pH paper in front of
    12·2 answers
  • Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reactio
    14·2 answers
  • Why is digestion a necessary process for animals
    15·1 answer
  • Position in the periodic table.
    12·1 answer
  • How many atoms of carbon are in 6.00g of carbon?(Mm of carbon is<br> 12g/mol)
    13·1 answer
  • What happens to temperature when the frequency is increased and when the frequency is decreased
    7·1 answer
  • Do mutations occur in DNA and RNA?
    6·2 answers
  • How many molecules are present in 2 H₂ SO4​
    9·2 answers
  • How do you know how to order an empirical formula?
    15·2 answers
  • Answer these questions based on 234. 04360 as the atomic mass of thorium-234. The masses for the subatomic particles are given.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!