The dots in these cylinders represent the shape and
density of the particles in the different states of matter,
Each dot represents a charged ion, so when two ions
are together in pair, they represent a neutral atom. Which container most likely contains a plasma

Answer:

Ice wedging, pressure release, plant root growth, and abrasion can all cause mechanical weathering. in the cracks and pores of rocks, the force of its expansion is strong enough to split the rocks apart. This process, which is called ice wedging, can break up huge boulders.

Answer:

f

Explanation:

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Answer:

Option C. Zn(s) + CoCI2(aq) —> ZnCl2 (aq) + Co(s)

Explanation:

The activity series of metals gives a clearer understanding of how metals displaces other metals in solution. Metals higher in the activity series will always displace those lower in the activity series.

Zinc, Zn is higher in the activity series than cobalt, Co. Therefore, zinc, Zn will displace cobalt, Co in any solution.

Considering the options given above, only option C. reflect the reaction and it is also balanced.

Zn(s) + CoCI2(aq) —> ZnCl2(aq) + Co(s)

Answer:

A

Explanation:

Since macroscopic means visible to the naked eye without a microscope it would be A. This is because we can see active phase changes in real time without any magnification like water boiling or ice melting.

Answer:

a is the correct answer

Explanation:

Answer:

Calcium

Explanation:

"Calcium is a mineral that is necessary for life. In addition to building bones and keeping them healthy, calcium enables our blood to clot, our muscles to contract, and our heart to beat. About 99% of the calcium in our bodies is in our bones and teeth. "

Answer:

Calicum

Explanation:

DID THE TEST AND GOT IT RIGHT!!!

Answer:

hybridization is the correct answer i guess

Answer:

Extension

Explanation:

PCR has three stages: denaturing, annealing, and extension (in this order).

I, myself, took this exam and got the answer correct.

Answer:

C.

Explanation:

Since we are trying to find the amount of moles of oxygen, we use the balanced equation to help us out. Since there are 4 moles of Sb for every 3 moles of oxygen, we must use a conversion to let us get rid of the Sb unit and get our desired unit of moles of oxygen. Therefore, C is our best answer.

Answer: 290 g of aluminium sulphate is produced.

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} H_2SO_4=\frac{250g}{98g/mol}=2.55moles[/tex]

The balanced chemical reaction is:

[tex]2Al(s)+3H_2SO_4(aq)\rightarrow Al_2(SO_4)_3(aq)+3H_2(g)[/tex]

According to stoichiometry :

3 moles of [tex]H_2SO_4[/tex] produce  = 1 mole of [tex]Al_2(SO_4)_3[/tex]

Thus 2.55 moles of [tex]H_2SO_4[/tex] will require=[tex]\frac{1}{3}\times 2.55=0.85moles[/tex]  of [tex]Al_2(SO_4)_3[/tex]

Mass of [tex]Al_2(SO_4)_3=moles\times {\text {Molar mass}}=0.85moles\times 342g/mol=290g[/tex]

Thus 290 g of aluminium sulphate is produced.

Answer:

Valence electrons

Explanation:

Answer:

The transfer of electrons forms strong bods between ions

Explanation:

Answer: B.) 0.827

Explanation:

Given the following :

Equilibrium constant (k) = 0.75

Forward rate constant = 0.62 mol/L/s

Backward rate constant =?

The equilibrium constant denited as 'k' is the proportion of the forward rate constant and the reverse rate constant.

Mathematically,

K = [forward rate constant / Reverse rate constant]

k = 0.75 ; forward rate constant = 0. 62mol/L/s

0.75 = [ 0.62mol/L/s ÷ reverse rate constant]

Reverse rate constant * 0.75 = 0.62mol/L/s

Reverse rate constant = (0.62mol/L/s ÷ 0.75)

Reverse rate constant = 0.8266mol/L/s

Reverse rate constant = 0.827mol / L/s

Answer:

0.827

Explanation:

Answer:

Explanation:

To find the [H3O+] of the solution, we can use the fact that HBr is a strong acid and completely dissociates in water. Therefore, the concentration of H3O+ is equal to the molar concentration of HBr:

[H3O+] = 0.0085 M

To find the [OH-], we can use the equation:

Kw = [H3O+][OH-]

Where Kw is the ion product constant for water, which has a value of 1.0 x 10^-14 at 25°C.

Rearranging the equation to solve for [OH-], we get:

[OH-] = Kw / [H3O+]

[OH-] = (1.0 x 10^-14) / (0.0085)

[OH-] = 1.176 x 10^-12 M

To find the pH of the solution, we can use the equation:

pH = -log[H3O+]

pH = -log(0.0085)

pH = 2.07

Therefore, the [H3O+] of the solution is 0.0085 M, the [OH-] is 1.176 x 10^-12 M, and the pH is 2.07.

One mole of any gas at room temperature and pressure will occupy 22.4 liter(s) (option C).

Ideal gas is an hypothetical gas, whose molecules exhibit no interaction, and undergo elastic collision with each other and with the walls of the container.

One mole of an ideal gas contains a volume of 22.414 L at standard temperature and pressure (STP).

According to Avogadro's law, the volume occupied by one mole of a gas must be the same for all gases if the temperature and pressure are the same.

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Answer:

i belive its b

Explanation:

Answer:

The traces of hydrogen ions are not discharged, so you not see any gas bubbles collecting on the negative cathode electrode. The blue colour fades as more and more copper is deposited, depleting the concentration of the blue copper ion Cu2+ ions in solution.

Explanation:

Answer:

because they don't decay easily bue to which if we throw on soil than it causes pollution.

Answer:

Explanation:

Sythetic fibres do not have air spaces or pores in them... it chokes the soil and block the pores through which water can flow so the soil is unable to take up air or absorb water.... henc its quality decreases, roots of plats are unable to suck up water, Synthetic fibres take years to decay...therefore causes soil pollution

Answer:

562.76 kJ

Explanation:

∆H° (kJ) is the total of the heats of formation of the products minus the  total of the heats of formation of the reactants.  

NB: look up the  heats of formation of the compounds in the heats of formation reference tables, it is found at the back of most chemistry text

heats of formation of the products (i.e.  Fe₃O₄(s) , 6HCl(g) , H₂(g) ) = -1120.9 + 6(-92.3)+ 0 = -1674.7 kJ

heats of formation of the reactants (i.e.  3FeCl₂(s) , 4H₂O(g) ) =3(-423.42) + 4(-241.8) = -2237.46kJ

∆H° = -1674.7 kJ - (-2237.46kJ) =562.76 kJ

Answer:

(C)

Explanation:

Because of the physics of it.

According to the overall equation of photosynthesis as follows: 6CO2 + 6H2O = C6H12O6 + 6O2, for every mole of carbon dioxide consumed, one mole of water is consumed.

Photosynthesis is the process by which plants and other photoautotrophs convert light energy into chemical energy.

Photosynthesis makes use of carbon dioxide and water to produce glucose and oxygen as follows:

6CO2 + 6H2O = C6H12O6 + 6O2

This chemical equation suggests that for every mole of carbon dioxide consumed, one mole of water is consumed.

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Answer:

The molecules (which do not ionize) dissolves in water depends on the polarity of molecules while the ionic compounds that dissolve in water depend on the electric charge of the compound.

For example sugar dissolves in water because of the polar nature of sugar which releases energy and form intermolecular bonds with the polar water molecules.

While salt dissolves in water as salt has a net electric charge that attracted by the oppositely charged ions present in the water. The attractive force between salt and water is stronger than sodium and chloride and allow salt to dissolve in the water.

Answer:2.98

Explanation:

Answer:

D) 8.93 g

Explanation:

Answer:

D. Tetrahedral

Explanation:

the reason is because four electron pairs are distributed.

Answer:

A 19

Explanation:

2 mole of KClO3 produces 3 mole of O3

2 : 3

1 : 3/2

12.61 : 3/2 × 12.61

12.61 : 18.9

12.61 mole of KClO3 produces 18.9mole of O2.

Answer:

Independent, Dependent

Explanation:

In the given lab procedure, the number of half-life cycles or the time in which the number of nuclei in radio-active substance turns into its half would be characterized as the 'independent' variable as it directly affects the dependent variable i.e. 'the number(or fraction) of Lincolnium nuclei remaining at that time.' The number of nuclei would be the dependent variable as it bears the change or effect of a change in the independent variable(half-life cycle).

Answer:

Its independent and dependent

Explanation:

On Edge 2021

Answer:

 Uracil,   Ribose

Explanation:

The Nitrogenous base found in RNA that is not found in DNA is called Uracil.

While the five-carbon sugar in RNA is called Ribose.

Answer:

Uracil and then Ribose

Explanation:

Answer:

Molecular Interactions are attractive or repulsive forces between molecules and between non-bonded atoms. Bonds break and form during chemical reactions. In the chemical reaction called fire, bonds of cellulose break while bonds of carbon dioxide and water form.

Answer:

26.33 g of NO.

Explanation:

We'll begin by writing the balanced equation to produce NO from H2O. This is given below:

5N2 + 6H2O —> 4NH3 + 6NO

Next, we shall determine the mass of H2O that reacted and the mass of NO produced from the balanced equation. This is illustrated below:

Molar mass of H2O = (2x1) + 16 = 18 g/mol

Mass of H2O from the balanced equation = 6 x 18 = 108 g

Molar mass of NO = 14 + 16 = 30 g/mol

Mass of NO from the balanced equation = 6 x 30 = 180 g

From the balanced equation above,

108 g of H2O reacted to produce 180 g of NO.

Finally, we shall determine the mass of NO produced by the reaction of 15.8 g of H2O.

This is illustrated below:

From the balanced equation above,

108 g of H2O reacted to produce 180 g of NO.

Therefore, 15.8 g of H2O will react to produce = (15.8 x 180)/108 = 26.33 g of NO.

Therefore, 26.33 g of NO were obtained from the reaction.

Answer:

Yes, it form Salt and Water

There are two characteristics of molecules, one is geometry and other is shape. Shape is excluding lone pair surrounding the central element and geometry is including the lone pair. Therefore, the correct option is option D.

VSEPR stands for valence shell electron pair repulsions. VSEPR theory is used to predict the shape and geometry of molecules on the basis of valence electrons pairs that are present around the central element of the molecule.

According to VSEPR theory, Lone pair lone pair repulsion is greater than bond pair bond pair repulsion. There are so many limitations of VSEPR theory. There is a repulsion between bond pair electrons and lone pairs present on the central element.  The shape of a molecule affect how the molecule is involved with living systems as it determines how the molecule functions.

Therefore, the correct option is option D.

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Answer:

Ethane

Explanation: