How many moles of MgO would produce 10 moles of water in this reaction.​

Answer:

N20

Explanation:

Answer:

Polonium > Tellurium > Selenium> Sulfur > Oxygen

Explanation:

In the periodic table, the trend of the atomic radius is; It increases down the group.

The elements when arranged in increasing atomic radius is given as;

Polonium > Tellurium > Selenium> Sulfur > Oxygen

Answer:

Li

Explanation:

F is a strongest electronegative element and it will combine with an element with low electronegativity. From the list provided, the element is Li.

Answer:

B

Explanation:

it transports water from roots to the leafs

Answer:

The Flask 1

Explanation:

Answer:

2NH3 --> 3H2 + N2

Explanation:

It's hard to explain how I got these coefficients  but I recommend watching Tyler DeWitt on Youttube. He explains tons of chemistry concepts in an easy and clear way. I always watch his videos when I don't understand something.

I would type in "How to balance chemical equation" by Tyler DeWitt

Answer:

E) All of these descriptions are true

Answer:

answer is b

Explanation:

Answer:

I cant really see the individual problems very well but i hope this helps

Explanation:

Decomposition = one thing -> 2 or more things

Synthesis= 2 or more things -> 1 thing

Answer:

In physics, the dynamo theory proposes a mechanism by which a celestial body such as Earth or a star generates a magnetic field. The dynamo theory describes the process through which a rotating, convecting, and electrically conducting fluid can maintain a magnetic field over astronomical time scales.

Answer:

The mechanism responsible for the generation of the Earth's magnetic field caused by convection and conduction currents in the fluid core.

Answer: it’s the third one

Explanation:

Answer:

yaeh

Explanation:

a)Ca(OH)

2

​

+CO

2

​

⟶CaCO

3

​

+H

2

​

O

No. of atoms:Ca−1;O−4;H−2;C−1

b)Zn+AgNO

3

​

⟶ZnNO

3

​

+Ag

No. of atoms:Zn−1;Ag−1;N−1;O−3.

Answer:

an animal that transfers pollen from flower to flower

Explanation:

think of a bee, bees move from flowers to flowers dropping pollen places and then it helps the plants grow.

Answer:

an animal that transfers pollen from flower to flower

Explanation:

Have a good day or night!

Answer:

Combustion

Explanation:

The reaction involves the synthesis of water and carbon dioxide.

Answer:

True

Explanation:

Permanent artificial, temporary artificial and natural. They are classified by the way in which they have achieved magnetism and by how long they remain magnetic.

Answer:

Longitudinal wave

Explanation:

This is a longitudinal wave. Air is known to travel through a longitudinal wave. A wave is a disturbance that goes through a medium. As this musician blows into his trumpet, a vibration is formed, which moves in the direction as where the wave is coming from. Air moves in parallel direction as the wave

This is an example of a LONGITUDINAL WAVE.

In conclusion, this is an example of a LONGITUDINAL WAVE.

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Answer:

The total pressure immediately after the volume reduction is 2.8 atmospheres

Explanation:

The question parameters are as follows;

The initial volume of the reaction vessel, V₁ = 1.00 L

The initial pressure of the reaction system, P₁ = 1.40 atm

The final volume of the reaction system, V₂ = 0.50 L

With the assumption that the gas mixture behaves as an ideal gas, and the temperature is constant, by Boyle's law we have;

P₁·V₁ = P₂·V₂

Where;

P₁ = The initial pressure in the reaction vessel

V₁ = The initial volume in the reaction vessel

P₂ = The total final pressure in the reaction vessel after the reduction in the vessel volume

V₂ = The final volume in the reaction vessel

∴ P₂ = P₁·V₁/V₂

From which we have;

P₂ = 1.40 atm × 1.00 L/(0.50 L) = 2.8 atm

The total final pressure in the reaction vessel, P₂ = 2.8 atm.

Explanation:

chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.

Chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.

This can be solved by using one of the different gas laws. This is shown below:

PV / T

Given:

P1 = 0.98 atm

V1 = 212 cm^3

T1 = 293 K

P2 = ?

V2 = 196 cm^3

T2 = 308K

Substituting to the relation:

P1V1/T1 = P2V2/T2

(0.98 * 212)/293 = (P2 * 196)/308

P2 = 1.114 atm

For this we use general equation for gases. Our variables represent:

p- pressure

v-volume

t- temperature

P1V1/T1 = P2V2/T2

in this equation we know:

P1,V1 and T1, T2 and V2.

We have one equation and 1 unknown variable.

P2 = T2P1V1/T1V2 = 1.1atm

We know that when two lines cross each other forming four angles, such that, each pair of opposite angles are equal to each other. This pair of angles are known as Vertical opposite angles.

Similarly, ∠KML = ∠JML = 25°.

Therefore, Chemical analysis of a compound shows that it contains 0.99g lead ,0.154g sulfur and 0.306g oxygen. what is the empirical formula of the compound.

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Answer:0.25M

Explanation:x(.40)=(.20)(.50)

.10/.40=0.25

this is ur answer

plzzz mark me as brainliest

Answer:

Explanation:

Fast

Answer:

Red light has long and Fast waves.

Answer:

V= 8.235 ml

Explanation:

The man above me copied me from the comments

I did it >:C

Here you go I hope this helps

Answer:

Very!

Explanation:

Very phat!

Explanation:

I'm pretty sure it's; because of the invention of the microscope, scientists were able to work together to develop the cell theory.

Answer:

A

Explanation:

I just know.

Answer:

See explanation

Explanation:

A dipole refers to a bond in which its two ends have opposite charges. A dipole results from a large difference in electronegativity between two atoms in a bond.

For instance, consider the bond between hydrogen and chlorine in HCl. The electronegativity of hydrogen is 2.2 while that of chlorine is 3.16. The significant electronegativity difference between the two atoms leads to a charge separation.

A partial positive charge appears on the atom that is less electronegative (hydrogen) while a negative charge appears on the more electronegative atom (chlorine).

This charge separation occurs because the shared electrons of the bond are more closely attracted to chlorine making it partially negative compared to hydrogen. A dipole moment now exists in the H-Cl bond hence the molecule is said to have a dipole.

Answer: 30mL

Explanation:

A 20-milliliter sample of a gas is at 546 K and has a pressure of 6.0 atmospheres. If the temperature is changed to 273 K and the pressure to 2.0 atmospheres, the new volume of the gas is 30mL.

Because gases occupy their containers, overall volume is identical to the container's internal volume. Liquids are typically measured using containers in which the volume or internal form of the container is indicated.

The volume of typical solid forms may be calculated using formulae. Another way to calculate the capacity of a solid would be to calculate how so much liquid something displaces.

P₁×V₁/T₁=P₂×V₂/T₂

substituting all the given values in the above equation, we get

6.0×20/ 546=2.0×V₂/ 273

V₂= 30mL

Therefore, 30mL is the final volume.

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Answer: 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen

Explanation:

The balanced chemical equation is:

[tex]2Na(s)+2H_2O(l)\rightarrow 2NaOH(aq)+H_2(g)[/tex]  

According to stoichiometry :

1 mole of [tex]H_2[/tex] is produced by = 2 moles of [tex]Na[/tex]

Thus 2.0 moles of [tex]H_2[/tex] are produced by =[tex]\frac{2}{1}\times 2.0=4.0moles[/tex]  of [tex]Na[/tex]

Thus 4.0 moles of sodium will react with water to produce 2.0 mol of hydrogen