100 POINTS!!
Based on what we have learned match the correct items with their counterparts.

The rate of formation of water and the decomposition of hydrogen peroxide is double as compared to rate of formation of oxygen.

The chemical reaction is given as the reaction of the reactants in the process to form the new compound.

The chemical reaction with the decomposition of hydrogen peroxide is:

[tex]\rm 2\;H_2O_2\;\rightarrow 2\;H_2O\;+\;O_2[/tex]

The rate of formation of water is given to be double the rate of formation of oxygen as 2 moles of water formed with 1 mole of oxygen.

The rate of disappearance of hydrogen peroxide is double with formation of oxygen as for decomposition of 2 moles of hydrogen peroxide, 1 mole of oxygen is formed.

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Answer:

Below.

Explanation:

a) When limewater is heated it gives off carbon dioxide gas and leaves calcium oxide( CaO).

CaCO3 ----> CaO + CO2

b) When copper II carbonate is heated the equation is:

CuCO3 --->  CuO + CO2.

Answer:

It is convenient to consider the structures of the body in terms of fundamental levels of organization that increase in complexity: subatomic particles, atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms and biosphere

Explanation:

i hope it help you

Answer(s):

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1.3 x 10¹⁵ : 1.2 x 10⁹ = 1.083 x 10⁶

Answer:

1.3x 10 15 gallons of water / 1.2x 10 9 gallons/day=

1.1x 10 6 gallons/day

Explanation:

A spring tide represents a natural process where more energy is produced when compared to other days in order to turn a turbine.

A renewable energy can be defined as any source of energy that is reversibly obtained from the nature.

In conclusion, a spring tide represents a natural process where more energy is produced compared to other days in order to turn a turbine.

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Answer:

C. during a spring tide

Explanation:

:D

Explanation:

Water is a liquid, it is same as the oceans water, but, swimming pool water contains Flourine (F) or Chlorine (CI) to clean it up, scinece there is no way that the water moves.

Nitrogen fixing bacteria are important to all ecosystems because they make use of atmospheric nitrogen into biological nitrogen.

The bacteria Azotobacter, Bacillus, Clostridium, and Klebsiella are examples of this class of nitrogen-fixing bacterium.

Many heterotrophic bacteria survive in soil and fix large amounts of nitrogen without interacting with other organisms.

Hence they are important because they convert the atmospheric nitrogen for the biological use.

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Answer:

There is no compund in the question...could you provide it please?

Answer:

Option D

Explanation:

Discovering microwaves would be pure science. Using them in a constructive way would be applied science.

The number of moles of potassium hydroxide that would react with 1 mole of hydrochloric acid will be 1.

From the balanced equation of the reaction as shown below:

[tex]KOH + HCl --- > KCl + H_2O[/tex]

One would see that the stoichiometric mole ratio of [tex]KOH[/tex] to that of [tex]HCl[/tex] is 1:1.

This means that 1 mole of KOH will require 1 mole of HCl for a complete reaction that obeys the law of conservation.

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The pH at 25.0 °c of an aqueous solution that is 0. 100 m in acetic acid is 5.744.

The acid dissociation constant is the equilibrium constant of an acid's dissociation reaction.

The ka is given [tex]1. 8 \times 10^-^5[/tex]

From the equation pf ka for weak acid

[tex]\rm H^+ = \sqrt{Ka \times C}[/tex]

Putting the values in the equation

[tex]\rm H^+ = \sqrt{ 1. 8 \times 10^-^5 \times 0.100 } = 0.0000018[/tex]

Now, the [tex]\rm pH = -log[H^+][/tex]

[tex]\rm pH = -log[0.0000018] = 5.744[/tex]

Thus, the pH of acetic acid is 5.744

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Answer:

The moon's surface has been struck with other objects.

Explanation:

Answer 1 - Craters are not a sign of alien life as there is nothing directly showing the crater's are not natural phenomena.

Answer 2 - Craters are (normally) produced by the impact force of a foreign object that is moving quickly and collides with an object of larger size.

Answer 3 - Volcanos form mountains and magma tubes, not craters.

Answer 4 - The formation of mountains does not relate to craters in any meaningful way.

Answer: The moon’s surface has been struck with other objects.

Explanation: because those crates were caused by drifting objects such as asteroid's and meteorite's that caused craters in the moon.

the answer is D

The symbol of the radioactive nuclide given the data is superscript 40 subscript 19 upper K (⁴⁰₁₉K)

An atom is composed of sub-particles which include

The symbol of an atom showing its atomic number and molar mass can be represented as follow

ⁿₓA

Where

ⁿₓA => ⁴⁰₁₉K

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Answer:

c

Explanation:

edge

Answer:

H₂ + O₂ → H₂O

Now, check that oxygen has two atoms on the left and one on the right

so, you put 2 on the right side

H₂ + O₂ → 2H₂O

oxygen is balanced so, add 2 on H₂ to balance out hydrogen

THE FINAL BALANCED EQUATION:

The solution has high pH and low pOH when the HCl is present in that solution because of the acidic nature of HCl.

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Answer:

B. a low pH and a high pOH.

Explanation:

Correct on Edge 2022!!!

Good luck everyone, you got this! Have a great day!

Answer:

Carbon dioxide and water

Explanation:

All hydrocarbons, when burned in excess of oxygen produces carbon dioxide and water [along with the unused oxygen].

The equation for the combustion of butane is:

C₄H₁₀ + 6.5O₂ → 4CO₂ + 5H₂O

With an Ag concentration of 0.020 M and a Pb2+ concentration of 0.0010 M, Only PbSO₄(s) will precipitate. The correct option is C.

Molarity is the measure of the concentration of any solute in per unit volume of the solution.

The equations are

[tex]\rm Ag_2SO_4--- > 2Ag++SO4^{-2}[/tex]

[tex]PbSO_4--- > Pb_2+ +SO4^{-2}[/tex]

Therefore:

[tex]Ag_2SO_4=[0.02^2[0.001]]\\Ag_2SO_4=4 \times 10^{-7}[/tex]

and

[tex]PbSO_4=[0.001^2[0.001]]\\PbSO_4=4*10^{-6}[/tex]

Since, [tex]PbSO_4 > > PAg_2SO_4[/tex], only  PbSO₄ will precipitate.

Thus, the correct option is (C) Only PbSO₄(s) will precipitate.

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Answer:

I think it's B

Explanation:

Brainlest po

Maybe i been learn this before

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Calcium nitrate is the limiting reagent and theoretical yield of calcium carbonate is 21.3 grams.

Relation between the mass and moles of any substance will be represented as:

Moles of Na₂CO₃ = 45g / 105.98g/mol = 0.424 mol

Moles of Ca(NO₃)₂ = 35g / 164g/mol = 0.213 mol

From the stoichiometry of the reaction it is clear that:

It means Ca(NO₃)₂ is the limiting reagents as less moles of this is present in the reaction, so the formation of product is depends on the amount of Ca(NO₃)₂.

Again from the stoichiometry of the reaction, it is clear that:

Theoretical mass of CaCO₃ = (0.213mol)(100g/mol) = 21.3g

Hence, required mass of calcium carbonate is 21.3g.

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[tex]\Huge{\green}\fcolorbox{blue}{cyan}{\bf{\underline{\red{\color{red}Answer}}}}[/tex]

2.96V

Explanation:

[tex] \sf Mg(s) + 2 {Ag}^{ + } (0.0001M) \longrightarrow {Mg}^{2 + } (0.130M) + 2Ag(s) \\ \\ \sf E{ \degree} = 3.17V[/tex]

As per the Nerest equation

[tex] \sf E_{cell} = E_{cell}{ \degree} - \frac{2.303RT}{nF} log \frac{ [M]}{ [{M}^{n + }] } \\ \\ \sf E_{cell} = E_{cell}{ \degree} - \frac{0.0592}{n} log \frac{[M]}{[ {M}^{n + } ]} [/tex]

Here n = 2

at the n depicts the number of electrons

M = Mg as it is neutral after the product

while M+ = Ag2+ as it is positively charge after the product

[tex] \implies \sf E =3.17 - \frac{0.0592}{2} log \frac{[Mg]}{ {[{Ag}^{ + }]}^{2} } \\ \\ \sf \implies E = 3.17 - 0.0292 log[ \frac{0.130}{ {10}^{ - 8} } ] \\ \\ \sf \implies E = 3.17 - 0.0292 log[130 \times {10}^{5} ] \\ \\ \sf \implies E = 3.17 - 0.0292 \times 7.11 \\ \\ \sf \implies E = 3.17 - 0.2076 \\ \\ \sf \boxed {\pink \implies \pink{E = 2.96V}}[/tex]

The heat required to convert water is given as the product of the mas and the latent heat. 28.34 kJ heat must be removed from the water to change it into ice.

Heat energy is the product of mass, specific heat capacity, and temperature change. It is given as,

[tex]\rm Q = mc \Delta T[/tex]

Given,

Mass of water = 456 gm

Specific heat capacity = 4.186 J / g K

Temperatutre change = 14.85 K

Substituting values above:

[tex]\begin{aligned} \rm Q &= 456 \times 4.186 \times 14.85\\\\&= 28345.91\;\rm J\\\\&= 28.34\;\rm kJ\end{aligned}[/tex]

Therefore, 28.34 kJ of heat energy should be removed from the water.

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The reaction of potassium iodide with silver nitrate results in the formation of silver iodide as a precipitate.

A precipitate is given as the solid deposition in the solution. It is formed as the product in the chemical reaction with the insolubility in the solution.

The reaction of KI with silver nitrate results in the formation of soluble potassium nitrate and insoluble silver iodide, which forms as the precipitate.

Thus, the reaction of potassium iodide with silver nitrate results in the formation of silver iodide as a precipitate.

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Answer:

2 molecules of hydrogen and 1 molecule of oxygen

Explanation:

The question is unclear, but if you are asking how many molecules are in one molecule of water, it is the answer provided above.

Answer:

A real gas is one that deviates from ideal behavior.

Explanation:

This is due to the effects of gas particles occupying a finite volume.

Answer: 0.065

Explanation:

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Here we go ~

1 mole of [tex] \sf{ COCl_2} [/tex] has 6.022 × 10²³ molecules of the given compound.

So, 0.78 mole of [tex] \sf{COCl_2} [/tex] will have ~

[tex]\qquad \sf  \dashrightarrow \: 0.78 \times 6.022 \times 10 {}^{23} [/tex]

[tex]\qquad \sf  \dashrightarrow \: \approx4.7 \times 10 {}^{23} \: \: \: molecules[/tex]

Ammonia yields nitric oxide and water in the presence of oxygen. The mass of nitric acid that will be produced from 6.40 gm of oxygen is 4.8 grams.

Mass is the product of the moles of the substance and its molar mass. it is given as,

[tex]\rm mass = moles \times molar\; mass[/tex]

The balanced chemical reaction is shown as:

[tex]\rm 4NH_{3} + 5O_{2} \rightarrow 4NO + 6H_{2}O[/tex]

Moles of oxygen are calculated by mass, 6.40 gm as,

[tex]\begin{aligned} \rm moles &= \rm \dfrac{mass}{molar\; mass}\\\\&= \dfrac{6.40}{32}\\\\&= 0.2\;\rm moles \end{aligned}[/tex]

From the reaction, the molar ratio of nitric oxide to oxygen is 4: 5 and is used to calculate the moles of nitric oxide as,

[tex]0.2 \times \dfrac{4}{5} = 0.16[/tex]

0.16 moles and molar mass, 30 of nitric oxide is used to calculate the mass as,

[tex]0.16 \times 30 = 4.8 \;\rm gm[/tex]

Therefore, 4.8 grams of nitric oxide will be produced.

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