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
Crazy boy [7]
3 years ago
12

Michael wants to know how different temperatures affect the growth rate of a bean plant. To make sure he has accurate and valid

results he uses the same species of plants, amount of water, soil and pots. He observes the growth over a period of five days.
What is the test/independent variable in this investigation?

Chemistry
2 answers:
bixtya [17]3 years ago
7 0

Answer:

B

Explanation:

you always need all of them to be equal for it to ACTUALLY make sense.

hope this helped!!!

Luda [366]3 years ago
5 0

Answer:

This is the biology Study Island Scientific Investigations with all of the ... Tap again to see term ... She is planning on exposing frogs of the same species to different amounts of the ... Tyler wants to know how the growth of tomato plants is affected by the ... He hypothesizes that the plants will grow best in sandy soils.

Explanation:

You might be interested in
How many moles is ( 1 x 10^9 ) molecules O2
Effectus [21]

Answer:

The answer is

1.66 \times  {10}^{ - 15}  \:  \: moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L}   \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

n =  \frac{1 \times  {10}^{9} }{6.02 \times  {10}^{23} }  \\

We have the final answer as

1.66 \times  {10}^{ - 15}  \:  \: moles

Hope this helps you

4 0
3 years ago
Pure magnesium metal is often found as ribbons and can easily burn in the presence of oxygen. when 2.59 g of magnesium ribbon bu
stepan [7]
Burning Mg in the air and reacting with O2 forming a white powder of MnO

So the equation is going to be:
Mn + O2 ⇒ MnO (this equation is not conserved)

to make it equilibrium:
1- First we should put 2Mno to equal the O2 on both sides.
So it will be:
Mg + O2⇒ 2MgO
2- Second we should put 2Mn to equal the Mn on both sides.
2Mg + O2⇒ 2MgO (this equation is conserved)
After putting the physical states the final equilibrium equation is going to be:
                        Δ
2Mg(s) + O2(g)⇒ 2MgO(s)

 

4 0
4 years ago
Valence electrons will either ______________ or ______________ to form molecules.
Alja [10]

Answer:

ionic or covalent

Explanation:

The outermost electrons -- the valence electrons -- are able to interact with other atoms, and, depending on how those electrons interact with other the atoms, either an ionic or covalent bond is formed, and the atoms fuse together to form a molecule.

7 0
3 years ago
Read 2 more answers
What is protoplasm of a cell that surrounds the nucleus?
max2010maxim [7]

Explanation:

Cytoplasm is a semi-solid substances inside cells.

6 0
3 years ago
Chose the statements that are TRUE from the list below Group of answer choices Ions exist alone in nature We add calcium carbona
kompoz [17]

Answer:

The first option is false, since limestone has a much more acidic pH than granite. The pH of limestone is between 3.5 and 5.0, while the pH of granite is generally around 4.8 and 5.6.

The second option is false. (Traditionally, lactic acidosis has been classified into two categories: type A and type B. Type A is the result of tissue hypoxia and type B occurs with normal tissue perfusion and a adequate global tissue oxygenation)

The third option is false.

In the fourth option we consider that it is true since the hydrofluoric acid is a weak acid. Hydrogen fluoride actually does dissolve quite freely in water, but the H 3 O + and F - ions are strongly attracted to each other and form the strongly bonded pair, H 3 O + · F -

Explanation:

The third option is considered false since the salts contain an acid and a basic part, where one works as an anion and the other as a cation against dissolution, that is why they are not one or the other, but both chemical characteristics make up the Salt.

There are more or less soluble salts than others, and in turn there are binary, quaternary, tertiary or simple salts.

Y como para contribuir más a la explicación, es importante recordar el grupo de los acidos se clasifica en dons grandes familias, en acidos debiles y fuertes.

Un alcalde ph mas debiles seran, por más tiempo cercano al valor ph: 7 esten menos acidificacion tendran, y cuanto más lejos de la neutralidad este es su numero de ph mas fuertes seran.

5 0
4 years ago
Other questions:
  • What is it called when water drops form on objects? Why does this happen?
    15·2 answers
  • Add coefficients to the reaction summary to show the net results of glycolysis. glucose + a ADP + b P i + c NAD + ⟶ x pyruvate +
    15·1 answer
  • Match the following terms with the correct definition.
    13·1 answer
  • As a star gives off energy in a thermonuclear reaction, the mass of the star
    13·2 answers
  • Solid potassium sulfide is slowly added to 150 mL of a copper(II) chloride solution until the concentration of sulfide ion is 0.
    12·1 answer
  • Near sea level, the atmosphere is composed of 78% nitrogen and 20% oxygen. Other trace gases make up the remaining 2%. At room t
    6·1 answer
  • Are the atoms really "sharing" electrons? Explain.
    12·1 answer
  • How do you separate the following mixture? Name only the process involved .<br>1.Sand and salt ​
    11·2 answers
  • Identify the type of chemical reaction involved in each action. Group of answer choices Michael uses a car that burns fossil fue
    10·1 answer
  • ...................................................................................
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!