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
Natali [406]
3 years ago
13

A scientist hypothesizes that fertilizer containing 10 percent nitrogen will produce tomato plants with more leaves and blossoms

than fertilizer containing 15 percent nitrogen. What is the independent variable?
Chemistry
2 answers:
nlexa [21]3 years ago
3 0
The number of leaves and blossoms
OleMash [197]3 years ago
3 0

Answer:

In the given case, the independent variable will be the amount of nitrogen present in the fertilizer.

Explanation:

In an experiment, an independent variable refers to the variable, which is controlled or changed, it is the variable that is used by the researcher to examine their dependent variable. In the given case, the amount of nitrogen present in the fertilizer will be the independent variable, as it is not reliant upon any other kind of variable.  

Also, from being not dependent on other variables, it is a variable on which other variables relies upon, and in the given case, it will be the number of blossoms and the number of leaves grown on the tomato plant with the application of the fertilizer.  

You might be interested in
To classify a substance as an Arrhenius acid or base, or as a Brønsted-Lowry acid or base, you must consider how the substance b
aleksandr82 [10.1K]

Answer:

Ammonia is an Arrhenius base and a Brønsted-Lowry base.

Explanation:

An Arrhenius base is any substance which, when it is dissolved in an aqueous solution, produces hydroxide (OH^-), ions in solution. An aqueous solution is a solution that has water present in it.

A Bronsted-Lowry base is a substance that accepts a proton, that is, a hydrogen ion (H^+).

Looking at the equation above, ammonia satisfies both characteristics. We can see that when ammonia is dissolved in water, hydroxide ions is produced in the solution. Hence it is an Arrhenius base. Similarly, the hydroxide ion is formed when ammonia accepts a proton. This is a characteristic of a Brownstead-Lowry base. Hence ammonia is both an Arrhenius base and a Brownstead-Lowry base.

4 0
4 years ago
Balance the chemical equation given below, and determine the number of grams of MgO that are needed to produce 20.0 g of Fe2O3.
Alenkasestr [34]

Answer:

1.) The balanced equation is    3MgO(s) +  2Fe(s) ===> Fe2O3(s) + 3Mg(s)

2.) 20g of Fe2O3 will be produced by 20 ×120/160 = 15g of MgO

Explanation:

THE CORRECT EQUATION IS: MgO(s) + ___ Fe(s)  ===> Fe2O3(s) + ___ Mg(s)

The balanced equation is: 3MgO(s) +  2Fe(s) ===> Fe2O3(s) + 3Mg(s)

molar mass of 3MgO = 3(24 + 16) = 120

Molar mass of Fe2O3 = 2 X 56 + 3 X 16

                                    =112 +48 =160

From the equation, 120g of MgO Produced 160g of Fe2O3

Therefore 20g of Fe2O3 will be produced by 20 ×120/160 = 15g of MgO.

7 0
3 years ago
Match the layers of the atmosphere
Ira Lisetskai [31]

Answer:

What language is this please i need help

7 0
3 years ago
Why are atoms electrically neutron particles?
lubasha [3.4K]
Atoms are electrically neutral because they have equal numbers of protons positively charged and electrons negatively charged.if an atom gains or loses one or more electrons it becomes an ion
5 0
3 years ago
You are a zoologist who works for an animal park that features a large pond with turtles of all shapes
anastassius [24]

Answer:

I think the turtles won't be able to lays eggs.

I would see the population of turtles reduce overtime.

6 0
3 years ago
Read 2 more answers
Other questions:
  • The product of a combination reaction is Ca(OH)2. If one of the reactants is H20 wat is the other reactant
    14·2 answers
  • Ammonia can also be synthesized by the reaction 3h2(g)+n2(g)→2nh3(g) what is the theoretical yield of ammonia, in kilograms, tha
    10·2 answers
  • Formation of our solar system.
    14·1 answer
  • Which of the following statements is true?
    7·1 answer
  • What takes pictures of clouds and storm systems from the exosphere
    11·1 answer
  • A chemist prepares a solution by adding 293 mgmg of K2Cr2O7K2Cr2O7 (MWMW = 294.19 g/molg/mol ) to a volumetric flask, and then a
    13·1 answer
  • What's the deffinition of igneous rock
    10·2 answers
  • Enter the molecular formula for butane, C4H10.<br> Express your answer as a chemical formula.
    13·1 answer
  • Horns are recessive; hornless is dominant. How might this challenge our understanding
    13·1 answer
  • An isotope has an atomic number of 32 and contains 31 neutrons. What is the mass number of this isotope?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!