How can graphs be used to picture a chemical reaction

Answers

Answer 1
The graph is curved, becoming less steep as the gradient decreases because the reactants are being used up, so the speed decreases. ... Graph 4.4 shows the increase in speed of a reaction with increase in temperature as the particles have more and more kinetic energy.

Related Questions

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Answers

Answer: The pH of the solution is 13.

Explanation:

pOH is defined as the negative logarithm of hydroxide ion concentration present in the solution.

[tex]pOH=-\log [OH^-][/tex]

We are given:

Concentration of [tex]Ca(OH)_2=0.05mol/dm^3=0.5mol/L[/tex]          (Conversion factor: [tex]1L = 1dm^3[/tex] )

1 mole of calcium hydroxide produces 1 mole of calcium ions and 2 moles of hydroxide ions

Concentration of [tex]OH^-=(2\times 0.05)=0.1mol/L[/tex]

Putting values in above equation, we get:

[tex]pOH=-\log (0.1)\\\\pOH=1[/tex]

We know:

[tex]pH+pOH=14\\\\pH=14-1\\\\pH=13[/tex]

Hence, the pH of the solution is 13.

The formation of a gaseous product is usually indicated by a/an______________ in a chemical reaction.

Answers

Answer: The formation of a gaseous product is indicated by an UPWARD ARROW in a chemical reaction.

Explanation:

A chemical reaction is defined as the process whereby chemical bonds between atoms of

substances known as reactants are either formed or broken leading to the formation of products. New substances are usually formed during a chemical reaction. The following are features of chemical reaction:

--> Evolution of gas

--> Formation of a precipitate

--> Change in color

--> Change in temperature

--> Change in state and

--> Formation of new substances.

Some chemical reactions takes place with the evolution of gas. This can be seen in the reaction of Zinc metal with hydrochloric acid. Hydrogen gas is EVOLVED with the formation of zinc chloride.

UPWARD ARROW in a chemical reaction indicates the evolution of a gas. It appears only on the product side and is written next to the gaseous product.

what are some ways you would expect people and things to be affected by an earthquake that moved the ground that much?

Answers

Answer:

Some of the common impacts of earthquakes include structural damage to buildings, fires, damage to bridges and highways, initiation of slope failures, liquefaction, and tsunami.

Consider the two facts below:
Fact 1: Dissolved oxygen is one of the most
important nutrients needed by fish in the aquatic
environment to survive.
Which scenarios may be explained by the facts on
the left? Check all that apply.
ID There is more dissolved oxygen in colder
waters than in warm water.
IM
Fact 2: Unlike solids, whose solubility increases
with increasing temperature, the solubility of gases
generally decreases with increasing temperature.
IND
There is less dissolved oxygen in colder
waters than in warm water.
Fish life in the ocean is more abundant during
the seaons with warmer water than seasons
with cooler water
HII
If ocean temperatures rise, then the risk to
the fish population increases.
DONE W

Answers

Answer:

A. There is more dissolved oxygen in colder waters than in warm water.

D. If ocean temperature rise, then the risk to the fish population increases.

Explanation:

Conclusion that can be drawn from the two facts stated above:

*Dissolved oxygen is essential nutrient for fish survival in their aquatic habitat.

*Dissolved oxygen would decrease as the temperature of aquatic habit rises, and vice versa.

*Fishes, therefore, would thrive best in colder waters than warmer waters.

The following are scenarios that can be explained by the facts given and conclusions arrived:

A. There is more dissolved oxygen in colder waters than in warm water (solubility of gases decreases with increase in temperature)

D. If ocean temperature rise, then the risk to the fish population increases (fishes will thrive best in colder waters where dissolved oxygen is readily available).

Answer: the answers are A and D

Explanation:

i got it right

a what is acrylic
b state the important use of acrylic fiber

Answers

Acrylic is a synthetic fibre which appears to resemble wool. It is flexible, resistant to moth, oil and chemicals. The clothes made from acrylic are relatively cheap and are available in a variety of colours.Read more on Sarthaks.com - https://www.sarthaks.com/816002/what-is-acrylic-state-one-important-property-of-acrylic

Please answer ASAP!!
Cu+2 + 2e- ———> Cu E*= 0.52 V
Ag+1 + 1e- ———> Ag E*= 0.80 V

Using the two cell reduction potential shown for the corresponding reaction calculate the cell potential for a voltaic cell made from these two metals.
A. 1.32 V
B. -0.28 V
C.0.28 V
D. -1.32 V

Answers

Answer:

C.0.28 V  

Explanation:

Using the standard cell potential we can find the standard cell potential for a voltaic cell as follows:

The most positive potential is the potential that will be more easily reduced. The other reaction will be the oxidized one. That means for the reactions:

Cu²⁺ + 2e⁻ → Cu E° = 0.52V

Ag⁺ + 1e⁻ → Ag E° = 0.80V

As the Cu will be oxidized:

Cu → Cu²⁺ + 2e⁻

The cell potential is:

E°Cell = E°cathode(reduced) - E°cathode(oxidized)

E°cell = 0.80V - (0.52V)

E°cell = 1.32V

Right answer is:

C.0.28 V

which synthetic fiber feels like wool and used as a substitute for wool​

Answers

Acrylic is the synthetic fibre feels like wool and used as a substitute for wool

Answer:

Acrylic

Acrylic is the synthetic fibre feels like wool and used as a substitute for wool.

When looking for a mathematical relationship between two variables, use a _____.

Answers

Answer:

Use a line graph ✌️

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Answer:

Use a line graph

Explanation:

What happens when one adds (NH4)2S to a solution that contains Al3+? What are the products of the chemical reaction?

Answers

Answer:

What happens when one adds (NH4)2S to a solution that contains Al3+?

Explanation:

When a solution that contains [tex]Al^{3+}[/tex] reacts with ammonium sulfide solution, then a precipitate of aluminum sulfide is formed.

The chemical equation for the reaction is shown below:

[tex]3(NH_{4})_{2} S(aq)+2 Al^{3+}(aq) -> Al_{2} S_3} (s) +3 NH_{4}^{+}[/tex]

Equation balancing a. S(s) + O2(g) → SO3(8) b. 2Al(s) + 3C12(8) ► 2AICI,(s) E. 2NaOH(s) + H2SO,(ac) —Na,SO (ac) + H2O(1) d. CHg(8) + 50(8) - A 3C02(8) + 4H2O(g)

Answers

Answer:

a. S(s) + 3/2 O₂(g) → SO₃(g)

b. Al(s) + 3/2 Cl₂(g) → AICI₃(s)

c. 2 NaOH(s) + H₂SO₄(ac) → Na₂SO₄(ac) + 2 H₂O(l)

d. C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) +  4 H₂O(g)

Explanation:

We will balance the equation using the trial and error method.

a. S(s) + O₂(g) → SO₃(g)

1. We will balance O atoms by multiplying O₂by 3/2.

S(s) + 3/2 O₂(g) → SO₃(g)

b. Al(s) + Cl₂(g) → AICI₃(s)

1. We will balance Cl atoms by multiplying Cl₂ by 3/2.

Al(s) + 3/2 Cl₂(g) → AICI₃(s)

c. NaOH(s) + H₂SO₄(ac) → Na₂SO₄(ac) + H₂O(l)

1. We will balance Na atoms by multiplying NaOH by 2.

2. We will balance H and O atoms by multiplying H₂O by 2.

2 NaOH(s) + H₂SO₄(ac) → Na₂SO₄(ac) + 2 H₂O(l)

d. C₃H₈(g) + O₂(g) → CO₂(g) +  H₂O(g)

1. We will balance C atoms by multiplying CO₂ by 3.

2. We will balance H atoms by multiplying H₂O by 4.

3. We will balance O atoms by multiplying O₂ by 5.

C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) +  4 H₂O(g)

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Answers

Answer:

3rd or 4th answer is correct

OPTION B is the correct answer

Complete the following statements to describe solids, liquids, and gases. Select the correct answer fror
A solid
A liquid
A gas
va definite volume and
a definite volume and
a definite volume and
v
a definite shape.
a definite shape.
a definite shape.

Answers

Answer:

solid is definite volume and shape

liquid is a definite volume but not a definite shape because it can move around and fit into different shapes, like on different water bottles.

gas is not a definite volume and not a definite shape because gas particles can expand and spread out which affects both volume and shape

How many places after the decimal should your measurements contain?

Answers

Answer:

Minimum 2. ( Thats how I do, and till now there is no probs)

Thank You'

Hope it helps u

Please mark as brainliest

Please answer. Brainliest!

Answers

Answer:

the equation is balanced

Explanation:

the equation is balanced

Explanation:

the equation is blanced

ANSWER THIS FOR 15 POINTS!!!
A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next few minutes?
Molecules in both the metal and the surrounding air will start moving at lower speeds.
Molecules in both the metal and the surrounding air will start moving at higher speeds.
The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up.
The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Answers

Answer:

it is the last one

Explanation:

cause over time the meatl will imit heat and heat up the air around it as it cools down slowly

heyoo I need help pleaseeeeee​

Answers

c) Current cannot flow

Reason: Because the switch is not closed.

Answer:

current can't flow

Explanation:

by the way of explanation it is open circuit in which the current flow whereas in closed circuit the current flow.

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While molecules such as glucose move freely in the blood, triglycerides are carried in the blood by very low density lipoproteins (VLDLs) in the form of chylomicrons. A chylomicron resembles a droplet, with phospholipid heads and VLDLs facing water, the solvent of blood, while triglycerides are found within. The outer surface resembles that of a regular phospholipid bilayer. If the contents of a chylomicron are all lipids
A. then they should be soluble in blood plasma.
B. an inner layer is needed because phospholipids always form bilayers,
C. there is no need for an inner phospholipid layer in a chylomicron

Answers

Answer:

B. an inner layer is needed because phospholipids always form bilayers.

Explanation:

Lipids are organic compounds which are not soluble in water but they are soluble in organic compounds. They are formed in body by combination of various molecules. The inner layer of phospholipids always form bilayers.

How many molecules of SO3 are present in 48g of SO3?

Answers

Answer:

3.6 ×10^23

Explanation:

moles = mass/ molar mass

molar mass= (1×32) +(3×16)= 80

moles = 48/ 80

=0.6

moles = number of molecules/ 6×10^23

number of molecules = moles × 6×10^23

=0.6 × 6×10^23

=3.6 ×10^23

Which of the following would be expected to have the lowest boiling point?
CH3CH2CH2CH3, CH3CH2NHCH3, NH2CH2CH2NH2, CH3CH2CH2NH2


O CH3CH2NHCH3
O NH2CH2CH2NH2
O CH3CH2CH2NH2
O CH3CH2CH2CH3

Answers

Answer:

CH3CH2CH2CH3

Explanation:

The boiling point of a compound depends on the nature of intermolecular interaction between the molecules of the compound.

If a molecule is nonpolar and has a low molecular mass, then its molecules are most likely held together only by weak intermolecular bonds such as dispersion forces. These forces are easily broken and the molecules move apart hence the molecule possess a low boiling point.

Polar molecules and molecules having higher molecular mass tend to have higher boiling points.

Among all the compounds listed, CH3CH2CH2CH3 is non polar and has the lowest molecular mass hence it exhibits the least boiling point.

Particle Mass
(\rm g) Atomic mass
units Electrical charge
(C) Relative
charge
electron 9.109 \times 10^{-28} 0.0005486 -1.6.02 \times 10^{-19} -1
proton 1.673 \times 10^{-24} 1.007276 +1.6.02 \times 10^{-19} +1
neutron 1.675 \times 10^{-24} 1.008665 0 0
1) The atomic number is the number of protons in the nucleus of an atom of an element. Each element has a unique number of protons. For example, an atom with 47 protons is always a silver atom and has an atomic number of 47. The atomic number is used to distinguish different elements from one another.

The mass number A is the sum of the number of protons and neutrons in the nucleus of an atom of an element. Atoms that have the same atomic number but different mass numbers are called isotopes. For example, all atoms with atomic number 6 are carbon atoms, but carbon atoms with mass numbers of 12 and 13 are isotopes of one another.

Each element is assigned a unique chemical symbol. For example, the symbol for hydrogen is H, and the symbol for oxygen is O. Some elements have symbols based on their names in languages other than English. For example, the symbol for iron is Fe, which is based on the Latin ferrum.

The atomic number, mass number, and chemical symbol are often combined to describe a given atom. For example, an atom of lithium (Li) with atomic number 3 and a mass number of 7 could be written 7/3 Li . Since the atomic number and the symbol are both unique to a given element, the atomic number is often left off of this notation, leaving ^7 Li.

i) Which subatomic particle(s) are found in the nucleus of the atom?

Enter the subatomic particle or particles separated by commas.

ii) The atomic number of oxygen is 8. What is the mass number of an oxygen atom with 7 neutrons?

Mass number = ?

iii) An atom has a mass number of 25 and 13 neutrons. What is the atomic number of this atom?

Atomic number = ?

iv) An atom of sulfur is represented by \rm ^{33}_{16}S. How many neutrons are in the nucleus of this atom? neutrons in \rm ^{33}_{16}S = ?

V) Give the nuclear symbol for the isotope of silicon (Z = 14) for which A = 29?

Enter the nuclear symbol for the isotope (e.g., \rm ^4_2He).

Answers

Answer:

(i) Protons, Neutrons

(ii) Mass number = 15

(iii) Atomic number = 12

(iv) Neutrons present in the atom = 17

(v) Nuclear symbol for the silicon isotope with mass number, A = 29 is ²⁹₁₄Si

Explanation:

(i) An atom is composed of three fundamental sub-particles: electrons, protons and neutrons. Electrons are found in orbits or energy levels some distance away from The nucleus of the atom. The nucleus of an atom contains the protons and neutrons which accounts for the mass of the atom.

(ii) The mass number of an atom of an element is the sum of the protons and neutrons present jn the nucleus of the atom.

The mass number of an atom of oxygen with proton or atomic number 8 and neutron number 7 is 8 + 7 = 15

(iii) Atomic number of an atom of an element is equal to the number of protons in the atom of the element.

Mass number = proton number + neutron number

Proton number = mass number - proton number

Proton number = 25 - 13 = 12

(iv) In the atom of sulfur represented bymthe symbol, the number in superscript is the mass number A, and the number in subscript is the atomic number Z.

Mass number = proton number + neutron number

Neutron number = Mass number - proton number

Neutron number = 33 - 16 = 17

(v) The nuclear symbol for the silicon isotope with mass number, A = 29 is ²⁹₁₄Si

Where the number in superscript is the mass number A, and the number in subscript is the atomic number Z.

Grasses, shrubs, and tree are called producers because they make

A. Food
B. water
C. Carbon dioxide
D. Minerals

Answers

The answer is C I thank

50 ml of 0.2 M acetic acid is shaken with 10 g activated charcoal. The concentration of acetic acid is reduced to 0.5 times the original molarity. The amount of solute (in g) adsorbed per gram of the adsorbent is approximately

Answers

Answer:

[tex] 0.03 g_{acid}/g_{charcoal} [/tex]

Explanation:

The amount adsorbed (solute) is the acetic acid, and the adsorbent is the activated charcoal. The mass of the adsorbent is 10 g.

So, we need to calculate the mass of the acetic acid as follows:

[tex] m = n*M = C*V*M [/tex]

Where:

n: is the number of moles = C*V

M: is the molecular mass =  60.052 g/mol

C: is the final concentration of the acid = 0.5*0.2 mol/L = 0.10 mol/L

V: is the volume = 50 ml = 0.050 L

[tex] m_{acid} = C*V*M = 0.10 mol/L*0.050 L*60.052 g/mol = 0.30 g [/tex]

Now, the amount of solute adsorbed per gram of the adsorbent is:

[tex] \frac{m_{acid}}{m_{charcoal}} = \frac{0.30 g}{10 g} = 0.03 g_{acid}/g_{charcoal} [/tex]

Therefore, the amount of solute adsorbed per gram of the adsorbent is 0.03 g/g.

I hope it helps you!

According to the kinetic-molecular theory, the average kinetic energy of gas particles depends on which factor?

Answers

Answer:

Temperature.

Explanation:

Kinetic molecular theory of gases states that gas particles exhibit a perfectly elastic collision and are constantly in motion.

According to the kinetic-molecular theory, the average kinetic energy of gas particles depends on temperature.

This ultimately implies that, the average kinetic energy of gas particles is directly proportional to the absolute temperature of an ideal gas. Thus, an increase in the average kinetic energy of gas particles would cause an increase in the absolute temperature of an ideal gas.

Temperature can be defined as a measure of the degree of coldness or hotness of a physical object. It is measured with a thermometer and its units are Celsius (°C), Kelvin (K) and Fahrenheit (°F).

How many meters are in 37 cm?
0.37 m
0.037 m
3700 m
370 m

Answers

Answer:

the correct answer is 0.37m

Explanation:

37/100 = 0.37m

Answer:

How many meters are in 37 cm?

In 37 cm - 0.37 m

>3

In some chemical reactions, such as photosynthesis, several different compounds take part in the reaction. How do you think that atoms present at the end of this kind of reaction compare to the atoms present at the beginning of the reaction? Explain.

Answers

Answer:

The atoms present at the beginning of the reaction is equal to the atoms present at the end of the reaction. This is because matter can neither be created nor be destroyed in an ordinary chemical reaction.

Explanation:

During photosynthesis, 6 molecules of water react with 6 molecules of carbon dioxide to form 1 molecule of glucose and 6 molecules of oxygen. The equation for the photosynthesis reaction is

6CO2 + 6H2O --> C6H12O6 + 6O2

At the beginning of the reaction, there is 6 carbon atoms, 18 oxygen atoms and 12 hydrogen atoms while at the end of the reaction, there is 6 carbon atoms, 12 hydrogen atoms and 18 oxygen atoms.  This is because according to the law of conservation of mass and matter, it can neither be created nor be destroyed in an ordinary chemical reaction. The number of atoms present at the beginning of the reaction must be equal to the number of atoms present at the end of the reaction.

Which of the following is a method that transports eroded material?

Answers

I’ll tell you in a minute I’m studying that

what is the pound mole of co2 ​

Answers

44.01 I’m pretty sure

can someone pls tell me if this is correct? and also if possible, pls explain the difference between fractional and simple distillation, thank you sm <3​

Answers

Explanation:

everything can be found in the picture

Se puede inferir que el órgano de los sentidos que contiene un mayor número de terminaciones nerviosas debido a su extensión es *

Answers

Answer:

La piel.

Explanation:

La piel es el órgano que forma el límite del cuerpo con el mundo exterior. La piel sirve para varios propósitos. Protege al cuerpo de influencias externas como el calor, el frío, la radiación o las bacterias y ayuda a mantener un ambiente interno estable. La piel está fuertemente atada a los huesos y tejidos. Por lo general, la piel alberga más de 100 especies bacterianas diferentes y algunas investigaciones sugieren que la mayoría de estas bacterias son beneficiosas y aumentan la probabilidad de que se evite la infestación de parásitos.  

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Answers

C3H8(g)+5O2(g)→3CO2(g)+4H2O(g)(propane)

CH4 + 2O2 → CO2 + 2H2O. (Methane)

2C4 H10 + 13O2 → 8CO2 + 10H2 O.(butane)

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Write a personal narrative essay that describes a significant experience that has shaped your identity. Develop the narrative through pacing, dialogue, and details that engage the reader.NEEDED ASAP SOCIOLOGY What percentage of students were noted as having different values from their parents?a 196c. 56%b. 1596d. 99% what is the product of -3y(-4y+y-9) Which risk mitigation framework allow scope for research and acknowledge for risk mitigation. help please step by step species specific category what will you do if you got chances to meet your favourite fictional characters Last question math please help What is the circumference of a circle with a diameter of 12 feet? (use 3.14 for pi)36 ft.37.68 ft.36.26 ft.38 ft. INDEFINITE ARTICLES1. Children. 2. Book. 3. Unicorn. 4. Uncle. 5. University. 6. Elephants.Seleccione una:a. 1_, 2a, 3an, 4a, 5an, 6_b. 1a, 2a, 3a, 4an, 5a, 6anc. 1a, 2an, 3a, 4an, 5_, 6and. 1_, 2a, 3a, 4an, 5a, 6_ Muslims do NOT get their laws from the Qur'an *true or false Plz help, its due soon!! Ill give brainliest What is kinetic and potential energy? While selling drugs, pharmacists should advise patients about, except: A. how to use each drug B. when to take a highly toxic drug C. time to take each drug D. medicinal solvents 3x + 1 over 4y2What is the value of the expression above when x = 3 and y = 4? You must show all work and calculations to receive full credit. A reason to establish internal control is to A. Provide reasonable assurance that the objectives of the organization are achieved. B. Encourage compliance with organizational objectives. C. Ensure the accuracy, reliability, and timeliness of information. D. Safeguard the resources of the organization. What base makes the equation below true?Note: A number should be entered, not a word. Find sin X, sin Z, cos X, and cos Z. Write each answer as a simplified fraction. Read the play The King of Sharks:Scene 1Princess is swimming in the ocean, singing.Narrator: Once, long ago, there lived a beautiful princess on the island of Hawai'i. She loved the ocean, and every morning, she swam in the warm water. While she swam, she sang songs about her love for the deep, blue water and her gratitude for the gentle waves.Princess: Oh, how I love the ocean. I never want to live anywhere else. If I could not see the beauty of the blue water or hear the sound of the waves, my heart would break.Princess sees a huge shark fin approaching. Frightened, she swims for shore.Narrator: One day, the king of the sharks heard the princess's song. Enchanted by her voice and her love for the ocean, he decided that he must meet her. Seeing how frightened she was of his true form, the shark king transformed himself into a human, with a magical cloak of scales in all the colors of the sea.Princess watches in amazement as a prince in a cloak of many-colored scales steps out of the water and offers her his hand.Shark King: Dearest Princess, I am so pleased to finally meet you. I have heard your songs many times, and I, too, love the ocean. It is my home.Princess: Please, come with me to meet my family. They will be amazed to see you.Exit princess and shark king.Scene 2Princess sits by a deep pool on the beach. Large home built into a cliff face is behind her. She holds a baby on her lap. In the pool, a large shark circles.Narrator: After some time, the shark king and the princess were married. They lived together happily, and they had a son. Sadly, the enchantment that made the shark king human could not last forever.Shark king emerges from the pool in human form. He removes his cloak and lays it at the princess's feet.Shark King: My dearest one, I must return home to the ocean now. I will leave this magical cloak for our son. Whenever he wears it, he will be safe from all harm. One day, he will come to find me in his true home, under the waves.Shark king jumps back into the pool and disappears down into its depths. The princess wraps the baby in the cloak.What is the theme of scenes 1 and 2 of the play The King of Sharks?Select one:a. Appearances can be deceiving.b. Cloaks provide vital protection.c. Enchantements do not last forever.d. Singing is a lovely form of expression. Graph the set on a number line. {-1/2, -1 3/4}