How does increasing temperature increase the number of reactions?
A. It increases the length of time the molecules are together.
B. It increases the collisions that have enough energy to react.
C. It makes the orientation of the molecules not important.
D. It lowers the amount of energy needed for a reaction to occur.

Answers

Answer 1

Answer:D. it lowers the amount of evergy needed for a reaction to occur.

Explanation:

a p e x

Answer 2

The concept Arrhenius equation is used here to determine the factor which increases the number of reactions. As the temperature increases, It increases the collisions that have enough energy to react. The correct option is B.

What is Arrhenius equation?

An equation which represents the relationship between the activation energy and rate of the reaction is known as the Arrhenius equation. According to this concept, lower the activation energy of a reaction, the higher its rate will be.

The equation is:

[tex]k = A . e^{-} ^{E_{a} } / RT[/tex]

k - Rate constant

A - Frequency factor

Eₐ - Activation energy

R - Gas constant

T - Temperature

When the temperature increases, the energy and speed of the molecules increases which in turn increases the number of effective collisions. If greater the value of frequency of collisions, then value of 'k' will be higher and greater is the number of reactions.

Thus the correct option is B.

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Related Questions

Iron pieces can be separated from sand using

Answers

Answer:

A Magnet or Magnetic Filtration

Answer:

Magnetic Filtration

Explanation:

That is the answer

How does an indicator show the difference between an acid and an alkali?​

Answers

Explanation:

When a base dissolves in water it is an alkali and makes an alkaline solution.

...

Litmus.

Red Litmus Blue Litmus

Acidic solution Stays red Turns red

Neutral solution Stays red Stays blue

Alkaline solution Turns blue Stays blue

How does chemistry affect the food you eat?
A.
All food can be analyzed to determine what nutrients they contain.
B.
Some fruits and vegetables may be genetically modified to resist diseases.
C.
Food can be transported in containers that keep it at safe temperatures.
D.
Some meats may be vacuum sealed to preserve their freshness.

Answers

Answer:

A

Explanation:

Nombra cada uno de los siguientes hidrocarburos de acuerdo a las reglas de la IUPAC

Answers

Answer:

i) ciclobutano

ii) 3-etil-4-metil ciclopenteno

Explanation:

Toda la idea de la nomenclatura IUPAC es permitir que la estructura de la sustancia se derive de su nombre y viceversa.

La nomenclatura IUPAC es un sistema universalmente aceptado para nombrar compuestos químicos.

los nombres de los compuestos enumerados son;

i) ciclobutano

ii) 3-etil-4-metil ciclopenteno

What does botanist study? A. Boats
B.Matter
C. chemicals
D. Plants

Answers

What does botanist study?

[tex]\implies {\blue {\boxed {\boxed {\purple {\sf {D.\: Plants}}}}}}[/tex]

[tex]\bold{ \green{ \star{ \orange{Hope\:it\:helps.}}}}⋆[/tex]

1. A(n) bond forms when one atom gives up one or more electrons to another atom. 2. Atoms or molecules with a net electric charge due to the loss or gain of one or more electrons are . 3. A(n) bond involves the sharing of electron pairs between atoms, also known as a molecular bond. 4. When one pair of electrons is shared between two atoms, a bond is formed. 5. When two pairs of electrons are shared between two atoms, a bond is formed. 6. A bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms. As a result, one end of the molecule has a slightly negative charge and the other a slightly positive charge.

Answers

Answer:

For 1: Ionic

For 2: Ions

For 3: Covalent

For 4: Single

For 5: Double

For 6: Polar

Explanation:

For 1:

An ionic compound is formed when the complete transfer of electrons takes place from one element usually, metals (forming cation) to another element usually, non-metals (forming anions).

Hence, an ionic bond forms when one atom gives up one or more electrons to another atom

For 2:

An ion is formed when an element loses or gains an electron. Two types of ions are formed which are cations and anions.

Hence, atoms or molecules with a net electric charge due to the loss or gain of one or more electrons are ions.

For 3:

A covalent bond is defined as the bond which is formed by the sharing of electrons between two atoms.

Hence, a covalent bond involves sharing electron pairs between atoms, also known as a molecular bond.

For 4:

A single bond is defined as the bond in which 1 bond is present between the two atoms or 1 pair of electrons (two electrons) are shared between the atoms.

Hence, when one pair of electrons is shared between two atoms, a single bond is formed.

For 5:

A double bond is defined as the bond in which 2 bonds are present between the two atoms or 2 pairs of electrons (four electrons) are shared between the atoms.

Hence, when two pairs of electrons are shared between two atoms, a double bond is formed

For 6:

A polar bond is defined as the bond where unequal sharing of electrons takes place. This creates a dipole within a molecule.

Hence, a polar bond is a type of chemical bond where a pair of electrons is unequally shared between two atoms.

Please tell me the answer ​

Answers

Answer:

the pair of isotopes are b and e

the element with mass no of 19 is C

the element with atomic no 7is D

Explanation:

B and E are isotopes bcos they have the same atomic no, i.e no of protons. They bother have atomic no of 17 BUT have different mass no i.e sum of neutrons and protons.

(b)C is correct because the sum of the protons and neutrons is 19

(c) D because it has 7 protons

El Niño begins with which of the following?

Answers

Answer:

El Niño is a climate cycle in the Pacific Ocean with a global impact on weather patterns. The cycle begins when warm water in the western tropical Pacific Ocean shifts eastward along the equator toward the coast of South America. Normally, these warm water pools near Indonesia and the Philippines.

Explanation:

I have oxygen gas at 2 L and 2 atm. At what pressure is the oxygen gas if my volume decreases to 1 L?

Answers

Answer: The oxygen gas has a pressure of 4 atm if my volume decreases to 1 L.

Explanation:

Given: [tex]V_{1}[/tex] = 2 L,        [tex]P_{1}[/tex] = 2 atm

[tex]V_{2}[/tex] = 1 L,          [tex]P_{2}[/tex] = ?

Formula used to calculate the new pressure is as follows.

[tex]P_{1}V_{1} = P_{2}V_{2}[/tex]

Substitute the values into above formula as follows.

[tex]P_{1}V_{1} = P_{2}V_{2}\\2 atm \times 2 L = P_{2} \times 1 L\\P_{2} = 4 atm[/tex]

Thus, we can conclude that the oxygen gas has a pressure of 4 atm if my volume decreases to 1 L.

Calculate the number of O atoms in 0.364 g of CaSO4 · 2H2O

Answers

Answer:

= 7.66 x 10²¹  oxygen atoms in 0.364 grams of  CaSO₄·2H₂O

Explanation:

For problems like this posting, one needs an understanding of the following topics:

The definition of the mole

1 mole of substance = mass in grams of substance containing 1 Avogadro's Number ( = 6.023 x 10²³ ) of particles of the specified substance. This is generally one formula weight of the substance of interest. From this, the following equivalent relationships should be memorized:

  1 mole = 1 formula weight = 1 mole weight (g)= 6.023 x 10²³ particles

Converting grams to moles:

Given grams => moles = grams/gram formula wt

Converting moles to grams:

Given moles => grams = moles x gram formula wt

_________________________________________________________

Calculate the number of O atoms in 0.364 g of CaSO₄ · 2H₂O.

Given mass CaSO₄ · 2H₂O = 0.364 grams

Formula Wt CaSO₄ · 2H₂O = 172 g/mole

moles CaSO₄ · 2H₂O = mass CaSO4 · 2H2O / formula Wt. CaSO₄ · 2H₂O

= 0.364 g CaSO₄·2H₂O / 172 g CaSO4·2H2O

= (0.364/172) mole CaSO₄·2H₂O

= 2.12 x 10⁻³ mole CaSO₄·2H₂O    

∴ number of Oxy (O) atoms in 0.364 grams CaSO₄·2H₂O

=  (2.12 x 10⁻³ mole CaSO₄ · 2H₂O)(6.023 x 10²³ molecules CaSO₄· 2H₂O/ mole)

= 1.276876 x 10²¹molecules CaSO₄· 2H₂O  CaSO₄2H₂O

= 1.276876 x 10²¹ molecules CaSO₄· 2H₂O   x   6 oxygen atoms / molecule

= 7.661256 x 10²¹  oxygen atoms in 0.364 grams of  CaSO₄·2H₂O

= 7.66 x 10²¹  oxygen atoms in 0.364 grams of  CaSO₄·2H₂O

What is the speed of a wave that has a frequency of 220 Hz and a wavelength
of 0.39 m?
A. 0.002 m/s
B. 564 m/s
C. 85.8 m/s
D. 0.01 m/s

Answers

Answer:

12d

Explanation:

H2SO4 +HI → __ H2S+12 +H2O balance the equation

Answers

Answer:

H2SO4 + 8HI → H2S + 4I2 + 4H2O

what do u understand by the word
ATOM​

Answers

Answer:

An atom is a particle of matter that uniquely defines a chemical element . An atom consists of cental nucleus that is usually surrounded by one or more electrons. Each electrons is negatively charged.

Hope this helps you! bye

X, Y, Z là ba axit cacboxylic đơn chức cùng dãy đồng đẳng (MX < MY < MZ), T là este tạo bởi X, Y, Z với một ancol no, ba chức, mạch hở E. Đốt cháy hoàn toàn 26,6 gam hỗn hợp M gồm X, Y, Z, T (trong đó Y và Z có cùng số mol) bằng lượng vừa đủ khí O2, thu được 22,4 lít CO2 (đktc) và 16,2 gam H2O. Mặt khác, đun nóng 26,6 gam M với lượng dư dung dịch AgNO3/NH3, sau khi các phản ứng xảy ra hoàn toàn thu được 21,6 gam Ag. Mặt khác, cho 13,3 gam M phản ứng hết với 400ml dung dịch NaOH 1M và đun nóng, thu được dung dịch N. Cô cạn dung dịch N thu được m

Answers

Yeah sure why not dude

A boulder rests on a ledge 31.2 m above a lake. If it has 2.65 x 10 J of gravitational
potential energy relative to the lake surface, what is the mass of the boulder?

Answers

Answer:

This question is incomplete, the gravitational potential energy is 2.65 x 10^5 J

mass of the boulder = 866.7g

Explanation:

Potential energy (P.E) refers to the energy due to the position of a body. It can be calculated as follows:

P.E = m × g × h

Where;

m = mass of substance (g)

g = acceleration due to gravity (m/s²)

h = height (m)

According to the information provided in this question,

h = 31.2 m

g = 9.8m/s²

m = ?

P.E = 2.65 x 10^5 J

Using P.E = m × g × h

2.65 x 10^5 = m × 9.8 × 31.2

2.65 x 10^5 = 305.76m

265000 = 305.76m

m = 265000 ÷ 305.76

m = 866.69

mass of the boulder = 866.7g

types of molecular forces ​

Answers

Answer:

Hydrogen bonds

Covalent bonds

Van Der Walls Forces

Ionic Bonding

London Dispersion forces

Metallic bonding

Chemical bonds

Mark Brainliest please

Answer:

1. Ionic forces
a. Ion to ion forces
b. Ion to induced dipole

2. Dipole - Dipole forces
a. Hydrogen bonding
b. Keesom (permanent dipole-permanent dipole) interactions
c. Debye (permanent dipole-induced dipole) interactions

3. Van-der-Vaals forces (induced dipole to induced dipole).


Explanation : see the pic for more details

is silicone malleable or brittle

Answers

Answer:

Luster: Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals). It is a much poorer conductor of heat and electricity than the metals.8 May 2021

Elements: Oxygen; Carbon

Explanation:

hope it helps

Pottery and china are suitable for making tea pots because they are:


brittle.
transparent
heat insulators.
non-conductors of electricity.

Quick help me

Answers

Answer:

non-conductors of electricity.

Explanation:

One of the auxiliary pleasures of drinking tea is selecting accoutrements: utensils, cups, kettles, storage tins, and, of course, teapots. The choices are legion with a dazzling array of shapes, sizes, decorative touches. Sometimes that blinds us to one of the most important decisions we must make in teapot selection: its function!

One of the auxiliary pleasures of drinking tea is selecting accoutrements: utensils, cups, kettles, storage tins, and, of course, teapots. The choices are legion with a dazzling array of shapes, sizes, decorative touches. Sometimes that blinds us to one of the most important decisions we must make in teapot selection: its function!Your teapot-buying decision should be based first and foremost on size (options often go from one to six cups, sometimes larger). The next most important aspects are your personal preference for material (glass, ceramic or porcelain) and whether it will be used for brewing tea or pouring brewed tea. Other important factors include: whether it's easy to hold, pours well, and, of course, fits into your budget. A gigantic Majolica pot, festooned with monkeys and in a brilliant highly-glazed green, may warm your heart; but if when filled with tea it weighs five pounds and holds more than your family can drink, it will probably be better suited for the collector�s shelf than the tea table.

brainly me pls

If oxygen has 6 valence electrons how many it would like to gain to have full valence shell? And what charge will it give to oxygen ion?

Answers

Answer:

Gain 2, and become negatively charged

Explanation:

A full valence shell, thus stablilized, has 8 electrons, and so it would need two more, and when atoms gain electrons, they become negatively charged because there are now more electrons than protons (and so, when they lose electrons, they become positively charged). Hope this helps! :)

please answer this as quickly as possible​

Answers

Explanation:

I. Because an explosion is a very fast exothermic reaction

ll. it depends on the it's particle size

How many molecules are present in this sample

0.423 mol co

Answers

That’s Correct thank you for the help

un estudiante introduce un corcho cuya densidad es 0.95 g/cm en cada uno de los liquidos que figura representa mejor la situacion

Answers

Answer:

La respuesta correcta es la opción A.

Explicación:

La densidad del corcho es 0.95g / cm3 por lo que se hundirá en la solución de acetona porque el corcho es más denso que la solución de acetona mientras que por otro lado, el corcho flotará en otros dos líquidos porque la densidad del corcho es menor que en otros dos líquidos o, en otras palabras, los dos líquidos son más densos que el corcho, por eso el corcho flotará en estos dos líquidos.

You've made a hot drink by dissolving a teaspoon of instant coffee and a teaspoon of sugar in a cup of hot water. Which of the following statements is true? Group of answer choices The water is the solute portion of the drink. The instant coffee and sugar dissolve because they have no charged regions to repel the partial positive and partial negative regions of the water molecules. The instant coffee and sugar are solvents. You've just prepared an aqueous solution.

Answers

Answer: The statement, you've just prepared an aqueous solution is true.

Explanation:

When one or more number of substances are dissolved in a solvent like water then solution formed is called an aqueous solution.

For example, when a hot drink is made by dissolving a teaspoon of instant coffee and a teaspoon of sugar in a cup of hot water is an aqueous solution.

Here, both coffee and sugar are solute whereas hot water is the solvent.

Thus, we can conclude that the statement, you've just prepared an aqueous solution is true.

Chlorine can be made by the electrolysis of sodium chloride solution. Calculate the mass of chlorine that can be formed from 50.0g of sodium chloride.???

Answers

Answer:29.9 or 30

Explanation:

Total, 30.38 grams of chlorine gas can be formed from 50.0 grams of sodium chloride through electrolysis.

To calculate the mass of chlorine that can be formed from 50.0g of sodium chloride (NaCl) through electrolysis, we need to consider the balanced chemical equation for the electrolysis of NaCl;

2 NaCl (aq) → 2 Na (s) + Cl₂ (g)

From the balanced equation, we can see that 2 moles of NaCl produce 1 mole of chlorine gas (Cl₂).

Convert given mass of sodium chloride to moles.

Molar mass of NaCl = 22.99 g/mol (Na) + 35.45 g/mol (Cl)

= 58.44 g/mol

Moles of NaCl = 50.0 g / 58.44 g/mol ≈ 0.856 mol

Calculate moles of chlorine gas formed.

From the balanced equation, 2 moles of NaCl produce 1 mole of Cl₂.

Moles of Cl₂ = 0.856 mol / 2 ≈ 0.428 mol

Convert the moles of chlorine gas to mass.

Molar mass of Cl₂ = 2 × 35.45 g/mol

= 70.90 g/mol

Mass of Cl₂ = 0.428 mol × 70.90 g/mol

≈ 30.38 g

So, approximately 30.38 grams of chlorine gas can be formed from 50.0 grams of sodium chloride through electrolysis.

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17. (1.09 x 102) x (2.79 x 10')
18. (5.75 x 104) / (4.71 102)
19.(3.38 x 106) x (7.80 x 104)
20. (7.04 x 10) / (9.45 x 10-)

Answers

Answer:

17. 3,101.922

18. 1.2447441822

19. 288,057.12

20. 0.74497354

A 125 mL sample of phosphoric acid was titrated with an average of 63.7 mL of a 0.050M barium hydroxide solution according to the given reaction: 2 H3PO4 + 3 Ba(OH)2 ⇌ Ba3(PO4)2 + 6 H2O Determine the concentration of the phosphoric acid sample:

Answers

Answer:

0.017 M

Explanation:

The balanced equation for the reaction is given below:

2H₃PO₄ + 3Ba(OH)₂ ⇌ Ba₃(PO₄)₂ + 6H₂O

From the balanced equation above,

The mole ratio of acid, H₃PO₄ (nₐ) = 2

The mole ratio of base, Ba(OH)₂ (n₆) = 3

Finally, we shall determine the concentration of the phosphoric acid, H₃PO₄. This can be obtained as follow:

Volume of acid, H₃PO₄ (Vₐ) = 125 mL

Volume of base, Ba(OH)₂ (V₆) = 63.7 mL

Concentration of base, Ba(OH)₂ (C₆) = 0.050M

Concentration of acid, H₃PO₄ (Cₐ) =?

CₐVₐ / C₆V₆ = nₐ/n₆

Cₐ × 125 / 0.05 × 63.7 = 2/3

Cₐ × 125 / 3.185 = 2/3

Cross multiply

Cₐ × 125 × 3 = 3.185 × 2

Cₐ × 375 = 6.37

Divide both side by 375

Cₐ = 6.37 / 375

Cₐ = 0.017 M

Thus, the concentration of the phosphoric acid, H₃PO₄ is 0.017 M

2. Evaluate :
(i) 28 : 23​

Answers

Answer:

28/23

Explanation:

28 : 23

this is written as ,

28/23

u can convert into simplest form but in this question u can't so leave it as it is.

Can anyone plz explain me this

Answers

Answer:

A. Cl2(g) + 2NaBr(aq) --> 2NaCl(aq) + Br2(g)

Explanation:

This is because,

Chlorine atoms (Cl2) displaces with Bromine atoms (Br) in Sodium bromide (2NaBr) solution to give a result as, Sodium Chloride (2NaCl) and left out atom Bromine (Br)

Fig. 6.1 shows the structural formula of an organic compound.

Fig. 6.1 (a) Name any two functional groups presents in the compound. (b) Give the structure of the organic product formed when the compound is reacted with Brz in an inert solvent, (ii) hot concentrated KMnO4, Na solid, (iv) CH3COCI benzenediazonium salt. (c) State the observations made in each of the reactions in each reaction in b​

Answers

Answer:

A dono wat is da anser sori man hehe

Answer:

(a).

→ Hydroxyl group.

→ Carbon-carbon double bond. ( alkene )

→ Esters.

(c).

(I). A colourless solution : with bromine atoms on cyclo hexene.

or: A white precipitate due to bromine atoms formed on phenol.

(ii). The purple solution turns colourless due to oxidation of the cyclo hexene.

(iii).

Bubbles of a colourless gas ( hydrogen gas ) formed when sodium reacts with the hydroxyl group to form Sodium oate ions.

(iv). Am not sure about my answer.

(v).

A red dye is formed. ( and azo dye is formed due to benzenediazonium salt reacting with phenol ).

Why do we need to know these organic molecules?
Are they important to living things?​

Answers

Answer:

Organic molecules are important to living things because life is based on the properties of carbon.

Properties of Carbon

Carbon is an important element because it can form four covalent bonds.

Carbon skeletons can vary in length, branching, and ring structure.

The carbon skeletons contain the functional groups that are involved in biochemical

Explanation:

Hope it helps

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