Someone help please!

Answer:

Manipulated/independent variable- DIFFERENT ELECTROLYTES

Responding/dependent variable- BRIGHTNESS OF BULB

Controlled variable- WET CELL

Explanation:

The independent variable, also known as manipulated variable is the variable that the experimenter changes or manipulates in an experiment. In this case where different electrolytes are observed to see which will light a bulb most brightly, the manipulated variable is the DIFFERENT ELECTROLYTES.

Dependent or responding variable is the variable of an experiment that responds to the changes made to the independent variable. It is the variable that is being measured in an experiment. In this case, the BRIGHTNESS OF BULB is dependent on the electrolyte used, hence, it is the responding variable.

Controlled variable or constant is the variable that the experimenter keeps the same throughout the experiment. In this case, the WET CELL is kept constant for all the electrolytes used i.e. it is not changed, hence, the WET CELL is the controlled variable.

A, O and D

and its sulfur luv ♡ not sulphur

Answer:

Your answer should be 53%

I'm very sorry if I'm wrong I have not done this in forever

Explanation:

No explanation

Answer:

True? I think.........

Answer:

In a balanced ecosystem, the largest population is the PRIMARY PRODUCERS, and the smallest is the TERTIARY CONSUMERS. In a balanced ecosystem, the largest population is the PRIMARY PRODUCERS, and the smallest is the TERTIARY CONSUMERS. This answer has been confirmed as correct and helpful.

Explanation:

which of these has 170 degree in fahrenheit and

Answer:

we know the formula to convert Fahrenheit to Celsius =(F-32)(5/9)

=(107-32)(5/9)

=(75)(5/9)=375/9=41.6degree Celsius

Answer:

Kp for this equilibrium ≅ 570

Explanation:

This is a situation where we have an heterogeneous mixture.

We get gas from liquid state:

C₂H₅OC₂H₅ (l) ⇌ C₂H₅OC₂H₅ (g)

In order to determine Kc → [C₂H₅OC₂H₅ (g)], in equilibrium

Liquid or solid do not count for Kc, neither Kp

Kp →  Partial pressure of C₂H₅OC₂H₅ (g)

Kc or Kp at equilibrium do not depend on the amount of liquid, there is; although it cannot be null since otherwise there would be no reaction.

Kp for this equilibrium ≅ 570

(Value for partial pressure in the only gas).

In order to determine Kc we can replace data at this formula

Kp = Kc (R . T)^ ⁽ⁿ ⁻ ⁿ°⁾

Where n - n° is the difference between the moles of produced gas. We only have 1 mol.

 Kp = Kc (298K . 0.082)¹

570 Torr / (298K . 0.082)  → Kc

Answer:

121.5g

Explanation:

from the equation:

2mol of Al react to give 3 mol of Zn

i.e 81g of Al will give 3×81/2 = 243/2 = 121.5g

Answer:

seasons experienced by the northern and southern hemisphere always differ by six months  when it is summer in the northern hemisphere, it is winter in the southern hemisphere

Explanation:

Answer:

ohhhhhhh she -he was having a point

Answer: the molecules have different energy and the system is not in equilibrium

Explanation:

The model developed by Jack has the same energy for each of the two objects, but as each object is made up of a different number of molecules, in the system with more molecules, object 2, each one has approximately 2.4 less energy and the molecules of Object 1 have an E / 2 energy.

So when you book them together the molecules have different energy and the system is not in equilibrium

Jack presented the model as if the two objects were in energy balance, but this is not possible, as each object has a different number of molecules.

We can arrive at this answer because:

This allows for an uneven, unbalanced emission of energy in the system and this unevenness is not presented in Jack's model.

More information:

https://brainly.com/question/16164100?referrer=searchResults

The model that represents the physical property of metals known as ductility can be seen in the image attached below.

Metals are substances that are good conductors of heat and electricity.

The term ductility is a characteristic of metal and it explains the ability of metals to be drawn into wire. it implies that metal materials can be hammered and beaten into tiny sheets of wires.

The model in the image attached below shows how gold which is metal is drawn into wires.

Learn more about metals here:

https://brainly.com/question/25090336?referrer=searchResults

Answer:

5.8125*10^-3

the moles in Fe2O3 are 0.93/(56*2 + 16*3) = 5.8125*10^-3

Answer:

coevolution

Explanation:

Coevolution plays a key role in shaping the biodiversity on Earth. Coevolution is commonly defined as reciprocal evolutionary changes brought about by interactions between species, implying that interacting species impose selection on each other(Science direct).

We can see that the change that occurred in the plants of the tropical rainforests is closely related to their link to birds. The fruits evolved an attractive color so that birds, having evolved to eat the brightly-colored fruits, may eat them.

Answer:

A.

Explanation:

Common sense<3

Answer:

A. Identifying a need, researching the background of that need,

making a plan to meet the need, doing the work, evaluating the

results, looking for improvements

Explanation: A P EX

Answer: The balanced molecular equation is:

[tex]K_2(C_2O_4)(aq)+CaCl_2(aq)\rightarrow 2KCl(aq)+Ca(C_2O_4)(s)[/tex]

The ionic equation is:

[tex]2K^+(aq)+C_2O_4^{2-}(aq)+Ca^{2+}(aq)+2Cl^-\rightarrow 2K^+(aq)+2Cl^-(aq)+Ca(C_2O_4)(s)[/tex]  

The net ionic equation:

[tex]C_2O_4^{2-}(aq)+Ca^{2+}(aq)\rightarrow Ca(C_2O_4)(s)[/tex]

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.

The balanced molecular equation is:

[tex]K_2(C_2O_4)(aq)+CaCl_2(aq)\rightarrow 2KCl(aq)+Ca(C_2O_4)(s)[/tex]

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The ionic equation is:

[tex]2K^+(aq)+C_2O_4^{2-}(aq)+Ca^{2+}(aq)+2Cl^-(aq)\rightarrow 2K^+(aq)+2Cl^-(aq)+Ca(C_2O_4)(s)[/tex]

The ions which are present on both the sides of the equation are potassium and chloride ions. and hence are not involved in net ionic equation.

The net ionic equation:

[tex]C_2O_4^{2-}(aq)+Ca^{2+}(aq)\rightarrow Ca(C_2O_4)(s)[/tex]

Answer:

0.014 theoretical yield and 79% percentage yield

Answer:

0.014 theoretical yield and 79% percentage yield

:)

Explanation:

Answer:

4

Explanation:

There are 4 different elements in the compound (N, H, P, O) but if you want to count the number of each element then the answer is different.

In NH4, theres 1 N and 4 H, but since there are 3 NH4s then u have 3 N and 12 H. There's 1 P and 4 Os as well.

Added together u have 3 + 12 + 1 + 4 = 20 elements in total.

hope this helps!

The number of atoms of each element are:

From the question given above, we obtained:

5ZnSO₄

The number of each atom of each element present can be obtained as follow:

Zn = 5 × 1

Zn = 5 atoms

S = 5 × 1

S = 5 atoms

O = 5 × 4  

O = 20 atoms

Total atom = atoms of (Zn + S + O)

Total atom = 5 + 5 + 20

Total atom = 30 atoms

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Answer:

what i need more details

Explanation:

Answer:

Ionic

Explanation:

AgNO3 is also highly soluble in water. Ionic means that the compound is composed of ions.

Answer:

Why is copper used for most electrical wiring? All metals have some amount of resistivity to electrical currents, which is why they require a power source to push the current through. The lower the level of resistivity, the more electrical conductivity a metal has

Answer:

tissues working together form organs.

The answer is organs.

Explanation:

cells form tissues, tissues form organs, and organs that fulfill related functions make up the organ system...hope this helps(:

Answer:

if a foreign lion species is introduced into the ecosystem then it can affect the ecosystem in anyway...

Explanation:

because there are chances that the lion might substitute the other predators present in that region.there are chances that the ecosystem may maintain the equillibrium.

HOPE IT HELPS PO(◍•ᴗ•◍)❤

Answer: 6H2+P4–>4PH3

Explanation:

The humidity in the air affects the evapotranspiration rate from the leaf surfaces. ... The use of fog and mist at this time can reduce the air temperature and increase the humidity within the plant canopy without saturating the plant medium. With more oxygen in the root zone, faster rooting occurs.