how does temperature affect spontaneity?


a. if triangleH and triangleS have opposite signs, the temperature will determine spontaneity.


b. if the temperature is high enough, any reaction will become spontaneous


c. temperature will affect spontaneity only if triangleH and triangleS are both positive


d. if triangleH and triangleS have the same sign, the temperature will determine spontaneity


PLEASE HELP TYSM!!!

Answer: light A has less energy than light B

Explanation: The longer wavelength the less energy. The shorter wavelength the more energy.

Answer:

Since the equation is balanced, So it have same number of oxygen in the  reactants and well as product.

Oxygen in product = 8

Oxygen in reactant = 8

Answer:

Explanation:

i got prove thoooooo

Answer:

D: chemical change

Explanation:

Answer:

Technically, the name for P4o10 is Tetraphosphorus Decaoxide, but most people call it Phosphorus Pentoxide

Explanation:

Tetraphosphorus Decaoxide is a chemical compound. The molecular formula for this compound is P4o10. But, under normal conditions, it is actually a dimer of P205, which is Phosphorus (V) Oxide, or Phosphorus Pentoxide.

To solve this we must be knowing each and every concept related to chemical compound. Therefore, the name for  P[tex]_4[/tex]O[tex]_{10}[/tex]. is Tetra phosphorus Deca oxide.

A chemical substance was made up of numerous comparable molecules that are made up of atoms from multiple elements that are held together through chemical bonds. Compounds are classified into four types based on the way the component elements are kept together.

A chemical formula is a method of communicating information about the atom components that make up a specific chemical compound, using conventional acronyms again for chemical elements and subscripts to express the atomic mass involved. The name for  P[tex]_4[/tex]O[tex]_{10}[/tex]. is Tetra phosphorus Deca oxide.

Therefore, the name for  P[tex]_4[/tex]O[tex]_{10}[/tex]. is Tetra phosphorus Deca oxide.

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Answer: D.) 25.9%

Explanation:

Dinitrogen pentoxide chemical formular : N2O5

Calculating the molar mass of N2O5

Atomic mass of nitrogen(N) = 14

Atomic mass of oxygen(O) = 16

Therefore molar mass :

N2O5 = (2 × 14) + (5 × 16) = 28 + 80 = 108g/mol

Percentage amount of elements in N205:

NITROGEN (N) :

(Mass of nitrogen / molar mass of N2O5) × 100%

MASS OF NITROGEN = (N2) = 2 × 14 = 28

PERCENT OF NITROGEN : (28/108) × 100%

0.259259 × 100%

= 25.925%

= 25.9%

Answer:

1. K = [CaCO3] [H2]⁴/ [CaO] [CH4] [H2O]²

2. More products are obtained at equilibrium since the equilibrium constant is very large.

Explanation:

1. Determination of the expression for the equilibrium constant, K.

The equilibrium constant, K for a given reaction is simply the ratio of concentration of the products raised to their coefficient to the concentration of the reactants raised to the coefficient.

The balanced equation for the reaction is given below:

CaO(s) + CH4(g) + 2H2O(g) —> CaCO3(s) + 4H2(g)

Therefore, the equilibrium constant, K for the above equation is:

K = [CaCO3] [H2]⁴/ [CaO] [CH4] [H2O]²

2. From the question given, the equilibrium constant is 2344.

Since the equilibrium constant is very large, it therefore means that more product are obtained at equilibrium.

Answer:

Explanation:

For one B2 molecule 3 A2 molecules are reacting means,

the ratio is  1:3

Out of 126 molecule = 126/3 =42 molecules are required for the reaction,

therefore the 54-42= 10 molcules of B2 will reamin in the  end of reaction.

Answer:

Option C. 1

Explanation:

Step 1:

Determination of the Neutron of both isotopes. This is illustrated below.

For isotope y xA:

Mass number = y

Atomic number = x

Neutron =..?

Atomic number = proton number = x

Mass number = Proton + Neutron

y = x + Neutron

Rearrange

Neutron = y – x

For isotope (y + 1) xA:

Mass number = y + 1

Atomic number = x

Neutron =.?

Atomic number = proton number = x

Mass number = Proton + Neutron

y + 1 = x + Neutron

Rearrange

Neutron = y + 1 – x

Step 2:

Determination of the difference between the neutron number of both isotopes. This is illustrated below:

For isotope y xA:

Neutron number = y – x

For isotope (y + 1) xA:

Neutron number = y + 1 – x

Difference in neutron number

=> (y + 1 – x) – (y – x)

=> y + 1 – x – y + x

Rearrange

=> y – y + 1 – x + x

=> 1

Therefore, the difference in the neutron number of both isotopes is 1

Answer:

exothermic reaction

Explanation:

The definition of exothermic is:

describing a process that involves the release of energy into the surroundings by substances undergoing change.

Think of ex-othermic as energy exiting/ released and en-dothermic as energy entering.

Answer: it’s endothermic

Explanation:

Answer:

all of the above

Explanation:

adams take up space they take up mass they are the basic chemical unit and matter is made of adams

Answer:

All of them except "Elements are the basic unit of atoms."

Explanation:

I took the quiz :D

Answer:

Mammals

Explanation:

Answer : Yes, a precipitate form when a solution of calcium chloride and a solution of mercury(I) nitrate are mixed together.

The net ionic equation will be,

[tex]2Hg^{+}(aq)+2Cl^{-}(aq)\rightarrow Hg_2Cl_2(s)[/tex]

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The given balanced ionic equation will be,

[tex]CaCl_2(aq)+2HgNO_3(aq)\rightarrow Ca(NO_3)_2(aq)+Hg_2Cl_2(s)[/tex]

The ionic equation in separated aqueous solution will be,

[tex]Ca^{2+}(aq)+2Cl^{-}(aq)+2Hg^{+}(aq)+2NO_3^{-}(aq)\rightarrow Hg_2Cl_2(s)+Ca^{2+}(aq)+2NO_3^{-}(aq)[/tex]

In this equation, [tex]Ca^{2+}\text{ and }NO_3^-[/tex] are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

[tex]2Hg^{+}(aq)+2Cl^{-}(aq)\rightarrow Hg_2Cl_2(s)[/tex]

Taking into account the definition of net ionic equation, a precipitate of Hg₂Cl₂ is formed when a calcium chloride solution and a mercury (I) nitrate solution are mixed.

The net ionic equation is a chemical equation for a reaction that lists only the species that participate in the reaction.

In other words, an ionic equation is a chemical equation where electrolytes in aqueous solution are written as dissociated ions. Usually this is a salt dissolved in water, where the ionic species are followed by (aq) in the equation, to indicate that they are in aqueous solution.

The balanced equation will be:

CaCl₂(aq) + 2 HgNO₃(aq) → Ca(NO₃)₂(aq) + Hg₂Cl₂(s)

where (aq) means aqueous and (s) solid.

Taking into account that:

The total ionic equation in separated aqueous solution will be:

Ca²⁺(aq) + 2Cl⁻(aq) + 2 Hg⁺(aq) + 2NO₃⁻(aq) → Ca²⁺ + 2NO₃⁻(aq) + Hg₂Cl₂(s)

A spectator ion is an ion that appears both as a reactant and as a product in an ionic equation.

Spectator ions can be either cations (positively charged ions) or anions (negatively charged ions).

When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.

In this case, Ca²⁺ and NO₃⁻ are the spectator ions because they appear unchanged in both the product and the reagent. So these ions cancel out by writing the net ionic equation and you get:

2Cl⁻(aq) + 2 Hg⁺(aq) → Hg₂Cl₂(s)

Since Hg₂Cl₂ is an insoluble salt, it will precipitate.

Finally, a precipitate of Hg₂Cl₂ is formed when a calcium chloride solution and a mercury (I) nitrate solution are mixed.

Learn more:

Answer:

option c the relative number of atoms of each element using the lowest ratio because empirical formula gives the simplest-whole number ration of each element

e.g. the empirical formula of benzeneC6H6 in CH

Explanation:

I HOPE IT WILL HELP YOU

Answer:

52.0 °C

Explanation:

Answer:

B, C, D

Explanation:

Polyatomic ions are ions that have more than 1 atom.

Answer:

b. hydrogen bonding.

Explanation:

Hope it helps.

To solve this we must be knowing each and every concept related to crystalline solids. Therefore, crystalline solids are the solids with a repeating atomic pattern. the correct option is option B.

One form of solid-state material is crystalline solids. Solids are substances with a melting point higher than ambient temperature at atmosphere pressure. Solids are classified into two categories based just on arrangement of their constituents: amorphous solids and crystalline solids.

Crystalline solids are solids with a regular but three-dimensional arrangement of component units including such (atoms, molecules, or ions). Crystalline solids are the solids with a repeating atomic pattern.

Therefore, crystalline solids are the solids with a repeating atomic pattern. the correct option is option B.

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Answer:

If alluminium loses 1 electron Al+

If it loses 2 electrons Al++

Explanation:

Answer :

X = [tex]Al_2(SO_4)_3[/tex]

Y = [tex]H_2O[/tex]

Explanation :

Balanced chemical equation : It is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on product side.

The given chemical equation is:

[tex]2Al(OH)_3+3H_2SO_4\rightarrow X+6Y[/tex]

As we know that when aluminum hydroxide react with sulfuric acid then it gives aluminum sulfate and water as product.

The balanced chemical reaction will be:

[tex]2Al(OH)_3+3H_2SO_4\rightarrow Al_2(SO_4)_3+6H_2O[/tex]

Thus, X is [tex]Al_2(SO_4)_3[/tex] and Y is [tex]H_2O[/tex]

Answer:

a

Explanation:

Answer:

D. HCI (Hydrochloric acid)

Explanation:

correct me if im wrong but im pretty sure thats the answer

Answer:

F = False

Explanation:

An action plan is a plan that an individual or a firm creates, that contains their objectives, aims, strategies , which they require to achieve their specific goals.

An action plan is very detailed, streamlined and straight to the point. It contains a series or a number of steps or tasks that an individual must embark on in other to achieve their end goal.

WHEN AN ACTION PLAN AS BEEN PUT IN PLACE OR SET IN MOTION, IT CAN BE CHANGED OR ALTERED. This is because the aim of a action plan is to achieve the end goal of an individual or a firm. As long as the changes made in the action plan does not hinder the achievement of those goals then the action plan can be changed.

Some of the very common reasons why action plans are changed or modified includes:

a) To make the action plan more flexible.

b) To track and monitor your progress in achieving your end goal. If there is a delay, you can easily track it out on your action plan and modify it.

In other to create an action plan, it is very important that the goals of such that individual or firm is very well defined and clear from the beginning. Action plans must always be monitored, and updated regularly.

Answer:

F, false

Explanation:

i took the quiz on edge

The correct answer is the combination of a metal with another element.

An alloy is a combination of two or more metallic elements to make a stronger material. For instance, there are bronze alloys, brass alloys, and coin alloys.

We can confirm that an alloy is a combination of one metal with another metal  because stainless steel is made of an iron and chromium alloy (iron is a metal; chromium is also a metal). Therefore, we can confirm that option C is the best choice.

Answer:

D: potential

Explanation:

Answer: b. ii and iii

Explanation:

The ester, Butyl Butanoate is formed when Butanol reacts with Butanoic acid

as seen below;

CH3-CH2-CH2-CH2-OH  +  CH3-CH2-CH2-COOH     ---->

Butanol                                     Butanoic acid

CH3-CH2-CH2-COOCH2-CH2-CH2-CH3   +          H2O

Butyl Butanoate                                                      Water

its volume this is the answer because the mercury will turn into gas. gas has more volume because it takes up more space as it spreads.

Answer: It’s Volume

Explanation:

Answer:

Gold(III) chloride

Explanation:

Answer:

6.125 × 10^-5

Explanation:

You have to move the decimal place 5 times to the right. Remember in scientific notation the first number, (the number that comes before the 10) has to be between 1.0 and 9.99...

Answer:

B. Creating a biodegradable trash bag.

Explanation:

Engineering is generally defined as the use of scientific principles to design or build structures such as buildings, bridges and vehicles.

Engineering is the application of science or math to solve our daily life problems. So, creating a biodegradable trash bag is an example of an engineering solution which solve the environmental-related issues.

Hence, the correct option is B.

Answer:

molar mass of carbon tetrafluoride (CF4) is

(12.01 × 1 ) + ( 4 × 19.00)

= 12.01 + 76

= 88.01u

= 88u

Hope this helps