do goldfish get more oxygen in the wild then the tank

Answer:

dicot

Explanation:

I looked it up lmoooo

Answer:

Explanation:

solar cell - converts sunlight into electricity

geothermal energy - heat produced within the Earth​

wave energy - turns turbines along coastlines

hydroelectricity - water falling through dams turns turbines, generates electricity

Answer:

Explanation:

The renewable energy sources are:  solar cell, geothermal, wave and hydroelectricity.  Their descriptions are as follows:

converts sunlight into electricity -> solar cell

energy turns turbines along coastlines -> wave

water falling through dams turns turbines, generates electricity -> hydroelectricity

heat produced within the Earth​ -> geothermal

Answer:

An atom of a group 17 element such as chlorine has seven valence electrons. It is “eager” to gain an extra electron to fill its outer energy level and gain stability. Group 16 elements with six valence electrons are almost as reactive for the same reason

Explanation:

Answer:

The main function of water is to enhance the plant growth provide a permanent for species that live within it, or provide a temporary home or breeding ground for multiple amphibians, insects and water-birthed organismsand to provide the nutrients and minerals necessary to sustain physical life.

Explanation:

here u go hope this helps :)

Answer:

Given rate constant of the first-order reaction is:

K=7.30x10^-4 s-1

Time t=500s

Determine % H2O2 decomposed in first 500 s in a first-order decomposition reaction of H2O2?

Explanation:

The expression for the rate constant of the first-order reaction is:

[tex]k=\frac{2.303}{t} log \frac{ao}{a-x}[/tex]

where,

k=rate constant

t=time period

ao=initial amount of the reactant

a-x=amount of a remained after time t.

Substitute the given values in the above formula to get ao/a-x value.

[tex]7.30x10^-4 s^-1 = \frac{2.303}{500s} log \frac{ao}{a-x} \\log \frac{ao}{a-x} =7.30x10^-4 s^-1 * \frac{500s}{2.303} \\log \frac{ao}{a-x} =0.158\\\frac{ao}{a-x}=10^{0.158} \\\frac{ao}{a-x}=1.438[/tex]

% of H2O2 decomposed is:

[tex]\frac{ao}{a-x} = 1.438 *100\\ =143.8[/tex]

Answer:

3Mg + Mn2O3 → 3MgO + 2Mn

Explanation:

I think this is how to balance I really don't understand the rest, I have not done this in years sorry!

[tex]3Mg + Mn_2O_3[/tex] → [tex]3MgO + 2Mn[/tex] is the balanced equation.

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total oxidation numbers is the same for both the reactants and the products.

[tex]3Mg + Mn_2O_3[/tex] → [tex]3MgO + 2Mn[/tex] is the  balanced equation of

[tex]Mg + Mn_2O_3[/tex] → [tex]MgO + Mn[/tex]

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 Upwelling is caused by the winds that on the oceans surface is the correct answer.

Ocean currents are water flow patterns that have an impact on climate zones and weather patterns all around the globe.

When winds blow they push the water from an area and to replace the displaced water water rises from beneath the surface and this process is called Upwelling.

Therefore Option C , Upwelling is caused by the winds that on the oceans surface is the correct answer.

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answer:Collisions between gas particlCollisions between gas particles or collisions with the vessel walls are perfectly elastic.

explanation:As long as an ideal gas is maintained at a constant temperature, the average kinetic energy of the molecules is said to be constant. In fact, what we call the temperature of a body at the macroscopic scale is just a representation of the kinetic energy carried by its atoms or molecules as they vibrate inside the body.

Now, if the kinetic energy of this oxygen gas is constant, it is because the collisions between the particles are assumed to be perfectly elastic. No energy is lost during the collisions. The rationale behind this assumption is that the particles are very tiny.

The answer which corresponds best to the explanation above is b. Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.

Answer:

The black solid is magnetic due to the special property of iron called ferromagnetism

6.9 g

Explanation:

The substance FeS is magnetic despite of the fact Fe^2+ is spin paired due to the special magnetic property of iron called ferromagnetism.

The equation of the reaction is;

Fe(s) + S(s) ----> FeS(s)

Number of moles of Fe = 5g/56g/mol = 0.089 moles

Since the reaction is 1:1, 0.089 moles of FeS is formed

For Sulphur;

Number of moles of sulphur = 2.5g/32 g/mol = 0.078 moles

Since the reaction is 1:1, 0.078 moles of FeS is formed

Hence sulphur is the limiting reactant.

So, mass of FeS produced = 0.078 × 87.91 g/mol = 6.9 g

Answer:

2a. 0.401 moles de O2

b. 127.7g KClO3

c. 43.95g KCl

3. 9600g Ag2CO3 debieron haberse descompuesto

Explanation:

Basados en la reaccion:

2KCIO 3 (s) → 2KCI(s) + 3O 2

2 moles de KClO3 producen 3 moles de oxígeno:

a. 32.8g de KClO3 son:

Moles KClO3 -Masa molar: 122.55g/mol-

32.8g * (1mol / 122.55g) = 0.2676 moles KClO3

Moles O2:

0.2676 moles KClO3 * (3moles O2 / 2mol KClO3) =

0.401 moles de O2

b. 50g O2 son:

Moles O2 -Masa molar: 32g/mol-

50g O2 * (1mol/32g) = 1.5625 moles O2

Moles KClO3:

1.5625 moles O2 * (2mol KClO3 / 3mol O2) = 1.042 moles KClO3

Masa KClO3:

1.042 moles KClO3 * (122.55g/mol) =

127.7g KClO3

c. Las moles de O2 son:

28.3g O2 * (1mol / 32g) = 0.88 moles O2

Moles KCl:

0.88 moles O2 * (2mol KCl / 3mol O2) = 0.5896 moles KCl

Masa KCl -Masa molar: 74.55g/mol-

0.5896 moles KCl * (74,55g/mol) = 43.95g KCl

3. Basados en la reacción:

2Ag 2 CO 3 → 4Ag(s) + 2CO 2 (g) + O 2 (g)?

2 moles de Ag2CO3 reaccionan produciendo 4 moles de Ag. Las moles de Ag son:

Moles Ag -Masa molar: 107.8682g/mol-

7511g Ag * (1mol/107.8682g) = 69.63 moles Ag

Moles Ag2CO3:

69.63 moles Ag * (2moles Ag2CO3/4molesAg) = 34.82 moles Ag2CO3

Masa Ag2CO3-Masa molar: 275.7453g/mol-

34.82 moles Ag2CO3 * (275.7453g/mol) =

9600g Ag2CO3 debieron haberse descompuesto

Answer:

When electrically charged particles are released from or within a material when it absorbs electromagnetic radiation.

Explanation:

I'm assuming you mean the photoelectric effect.

Answer:

B

Explanation:

[tex]\frac{6.626\cdot10^{-34}\cdot\left(3\cdot10^{8}\right)}{589}[/tex]= 3.37 x 10^-28 J

Answer:

i think its 32

Explanation:

Answer:

The empirical formula is Ag2O.

The empirical formula is Ag2O.Explanation:

The empirical formula is Ag2O.Explanation:The empirical formula is the simplest whole-number ratio of atoms in a compound.

The empirical formula is Ag2O.Explanation:The empirical formula is the simplest whole-number ratio of atoms in a compound.The ratio of atoms is the same as the ratio of moles. So our job is to calculate the molar ratio of Ag to 2O.

do the steps ...

To get this into an integer ratio, we divide both numbers by the smaller value.

From this point on, I like to summarize the calculations in a table.

ElementAgMass/gXMolesXllRatiomllIntegers

—————————————————−———mAgXXXm7.96Xm0.07377Xll2.00mmm2

mlOXXXXl0.59mm0.0369Xml1mmmml1

There are 2 mol of Ag for 1 mol of O.

Answer:

Hello There!!

Explanation:

The answer is↬The empirical formula is Ag2O. It is the simplest whole-number ratio of atoms in a compound.

hope this helps,have a great day!!

~Pinky~

Answer:

Physical changes are changes that do not alter the identity of a substance. Chemical changes are changes that occur when one substance is turned into another substance.

Explanation:

Answer:

449.7 kPa

Explanation:

We prepare the Ideal Gases Law to solve this question:

P . V = n . R . T

As moles of gas are the same, and R is constant, we can compare this two situations:

P₁ . V₁ / T₁  and P₂ . V₂ / T₂

As this remains constant we can propose:

P₁ . V₁ / T₁  = P₂ . V₂ / T₂

We convert T° to Absolute value: 30°C + 273 = 303 K

We convert the volume from mL to L

800 mL . 1L /1000 mL = 0.8 L

200 mL . 1L /1000 mL = 0.2 L

1 atm . 0.8 L / 273 K = P₂ . 0.2L / 303k

(0.8 L.atm / 273K ) . 303k = P₂ . 0.2L

0.8879 L.atm / 0.2L = 4.4 atm

We convert pressure from atm to kPa

4.4 atm . 101.3 kPa / 1 atm = 449.7 kPa

Answer:

450. kPa

Explanation:

Use the combined gas law. Solve for the unknown. Plug in the numbers, turn the crank, and out pops the answer. A typical plug-n-chug problem.

P1V1 / T1 = P2V2 / T2 …………….. combined gas law

P2 = P1V1T2 / (T1V2) ……………… solve for P2

P2 = 101.3 kPa x 800. mL x 303K / 273K / 200. mL

P2 = 450. kPa

We are assuming 3 significant digits, simply because it makes more sense than having only one significant digit. You didn’t actually specify a pressure unit, but I’m guessing you mean kilopascal, (kPa).

Answer:

24 N

Explanation:

Mechanical advantage is the rate of load overcome to the effort applied to overcome the load or resistance. Also, it is the quotient of the resistance force to the effort force.

i.e MA = [tex]\frac{L}{E}[/tex]

Given that, MA = 4, and L = 6.0 N, then;

4 = [tex]\frac{L}{6}[/tex]

cross multiply to have

L = 4 x 6

  = 24 N

L = 24 N

Thus, the force exerted on the resistance by the machine is 24 N.

Carbonyl functional group contain molecule H-C-OH. Hence, option D is correct.

A functional group is a group of atoms responsible for the reactions of a particular compound.

A carbonyl group contains a double bond linking a carbonyl carbon atom and a carbonyl oxygen atom. The carbonyl oxygen atom shares six valence electrons with the carbonyl carbon atom.

Hence, the carbonyl functional group contain the molecule H-C-OH.

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Answer:

A, hydroxyl

Explanation:

Just took the test on apex and the other answer was wrong and hydroxyl was correct

Answer:

third zone

Explanation:

plz follow me bro/sis

The earth is found in a region of space called the goldilocks zone

The goldilocks zone is the portion around a star where it is not too hot and not too cold for liquid water to exist on the surface of surrounding planet.

It is the habitable zone where living things exist too

The Earth is one the planets.

A planet is a celestial body moving in an elliptical orbit round a star.

There are 9 planets known. They are as follows:

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Answer:

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Answer:

[tex]1 \: mole \: weighs \: 18 \: g \\ 4.7 \: moles \: weigh \: (4.7 \times 18) \: g \\ = 84.6 \: g[/tex]

Answer:

The volume of the solution is 3 L.

Explanation:

Molarity is a measure of the concentration of that substance that indicates the number of moles per unit volume. In other words, molarity is the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution.

[tex]Molarity=\frac{number of moles of solute}{solution}[/tex]

Molarity is expressed in units [tex]\frac{moles}{liter}=M[/tex]

In this case:

Replacing in the definition of molarity:

[tex]0.25 M=\frac{0.75 moles}{volume}[/tex]

volume*0.25 M= 0.75 moles

[tex]volume=\frac{0.75 moles}{0.25 M}[/tex]

volume= 3 L

The volume of the solution is 3 L.

Answer:

The IUPAC name of above structure is N-Methylethanamine.

Answer: The author used the word "conversely" because the first statement he made is in CONTRAST to the second statement he made.

Explanation:

Matter is made up of atoms or molecules that are in constant motion. The motion of these tiny particles ( molecules) gives the object energy. The movement of these molecules depends on the state of matter which includes

--> GASEOUS STATE: Here, the particles are completely free to move and are always in motion.

--> LIQUID STATE: particles in this state slide by one another and are always in motion.

--> SOLID STATE: particles in this state are held tightly together but are always in motion.

Also, the molecules in motion are greatly affected by temperature changes. Increase in temperature will cause the particles in the liquid to move faster. Such is seen when soup is heated, the molecules travel faster than before. But the OPPOSITE is seen in an ice cube. This is because the ice cube is in solid state and of a lower temperature.

Answer: the answe

Explanation: 18 cabron - c hydr3gon is  is  46.20