ILL GIVE BRAINLIEST ⏳⏳⏳⏳⏳⌛◑﹏◐ Lorenzo is making a prediction. “I learned that nonmetals increase in reactivity when moving from left to right. So I predict that xenon will be more reactive than iodine.” Is Lorenzo correct? If so, why? If not, explain his error.

Answers

Answer 1
No, he is not correct. Xenon is not very reactive since it is located in the group of noble gases. The noble gases are all chemically unreactive gases.Elements within different groups within the periodic table have different physical and chemical properties. Hope this answers the question.
Answer 2

Answer:

Answer is no because,

Explanation:

Iodine is LESS REACTIVE than the elements above it in group 17 (fluorine, chlorine and bromine) it still forms compounds with many other elements. Although iodine is a non-metal, it displays some METALLIC properties. Xenon is one of the inert or noble gases and is odorless, colorless, tasteless and chemically NON REACTIVE

PLEASE MARK BRAINLIEST


Related Questions

Scientists are studying different jackets made for extremely cold, snowy weather. They are trying to find jackets
that are warm but also thin enough to allow for natural bodily movement.
Which question could the scientists answer scientifically?
Which jacket's color looks the best?
Which jacket traps the most heat?
Would warm and thin jackets cost less?
Which jacket seems the most professional?
jp

Answers

Answer:

Which jacket traps the most heat.

Explanation:

I took the test

Answer:

B. Which jacket traps the most heat?

Explanation:

Just got it right on Edg

Question 2
5 pts
80) Multiply 6.4 x 10-3 times 8.0 x 10' and express the answer in scientific notation.
O 5.1 x 10-21
O 5.1 x 10-3
O 5.1x 103
O 5.1x 104
0 5.1 x 105
5 pts

Answers

Answer:

5.1  x 10⁻¹

Explanation:

Given:

6.4 × 10⁻³ × 8.0 × 10¹

Find:

Value of equation

Computation:

6.4 × 10⁻³ × 8.0 x 10¹

[6.4 × 8.0] × [10⁻³ × 10¹]

[51.2] × [10⁻²]

5.12 x 10⁻¹

5.1  x 10⁻¹ (Approx)

In Europe, gasoline efficiency is measured in km/L. If your car’s gas mileage is 25.0 mi/gal, how many liters of gasoline would need to buy to complete a 250 km trip to Europe? Use the following conversions: 1 km= 0.6214 mi and 1 gal = 3.78L

Answers

Answer:

[tex]V=23.5L[/tex]

Explanation:

Hello,

In this case, it is convenient to compute the car's mileage in km/L as follows:

[tex]25.0\frac{mi}{gal}*\frac{1km}{0.6214mi}*\frac{1gal}{3.78L}=10.64\frac{km}{L}[/tex]

In such a way, since the distance is measured to be 250 km, the volume requirement is:

[tex]V=\frac{250km}{10.64kg/L}\\ \\V=23.5L[/tex]

Regards.

Select the statements that correctly describe buffers.
A) A buffer is made up of a strong acid and a strong base.
B) The pH of a buffer solution does not change significantly when a small amount of acid is added.
C) The pH of a buffer solution is determined by the ratio of the concentration of acid to the concentration of base.
D) The K_a of a buffer decreases slightly when a small amount of acid is added to the buffer solution.
E) A strong acid added to the buffer solution reacts with the weak acid of the buffer.

Answers

Answer:

B) The pH of a buffer solution does not change significantly when a small amount of acid is added.

C) The pH of a buffer solution is determined by the ratio of the concentration of acid to the concentration of base.

Explanation:

Buffer solution is useful in maintaining the pH of a solution constant . It is made of a weak acid and its salt or a weak base and  its salt . Ph of a buffer is given by the following relation .

pH = pKa + log [ A⁻ ] / [ HA ]

A- is a base and HA is a weak acid .

When we add acid , it reacts with A⁻ or base and gets neutralised .

When we add base , it reacts with acid HA and gets neutralised . In this way it maintains the pH of the solution .

Correct statements are as follows:

B) When a tiny amount of solvent is introduced to a buffer, the pH doesn't really alter considerably.

C) The ratio of acids to base concentration determines the pH of a phosphate buffer.

So, options B) and C) are correct.

Define pH.

ph scale used in science to measure the acidity or alkalinity of an aqueous solution. pH originally stood for "potential of hydrogen." The pH of acidic solutions is lower than that of basic or alkaline solutions.

Correct statements are as follows:

B) When a tiny amount of solvent is introduced to a buffer, the pH doesn't really alter considerably.

C) The ratio of acids to base concentration determines the pH of a phosphate buffer.

So, options B) and C) are correct.

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Dr. Winters decides not to tell the people in his experiment about the potential risks. He
.
A) is within the limits of ethical behavior
B) is being noncompliant
C) is making an honest mistake
D) has a lot of integrity

Answers

Answer: sorry I cant help you I need the same answer

Explanation:

Answer:

b

Explanation:

Two particles of the element iodine are chemically bound. The two particles compose what?
Group of answer choices

a compound

a molecule

an isotope

an atom

Answers

Answer:

compound and elements.

Explanation:

The work needed to move a mass of 2.12 kg 47.1 m against a resistive force of 21.4 N is ___ J.

Answers

Answer:

1007.94 J

Explanation:

Work done: This can be defined as the product of force and distance, along the direction of the force. The S.I unit of work is Joules (J) .

Form the question above,

W = F×d........................... Equation 1

Where W = Work done, F = Resistive force, d = distance.

Given: F = 21.4 N, d = 47.1 m

Substitute these values into equation 1

W = 21.4(47.1)

W = 1007.94 J

Which of the following compounds will not possess dipole dipole interactions between its molecules?A. HBr.B. CO2.C. PH.D. NO.E. SCl.

Answers

Answer:

B. CO2

Explanation:

Because its a neutral compound hence lacks any form of dipole dipole interaction

What causes blood cells to shrink?

Answers

Definitely iron deficiency

(3.0 x 10^8) / (5.76 x 10^14 s-1)

Answers

Answer:

521 nm

Explanation:

The following data were obtained from the question:

Frequency (f) = 5.76×10¹⁴ s¯¹

Wavelength (λ) =?

Velocity (v) , wavelength (λ) and frequency of a wave are related according to the following equation:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

With the above equation, we can obtain the wavelength of the photon of the green light as follow:

Frequency (f) = 5.76×10¹⁴ s¯¹

Velocity of light (v) = 3×10⁸ m/s

Wavelength (λ) =?

v = λf

3×10⁸ = λ × 5.76×10¹⁴

Divide both side by 5.76×10¹⁴

λ = 3×10⁸ / 5.76×10¹⁴

λ = 5.21×10¯⁷ m

Finally, we shall convert 5.21×10¯⁷ m to nanometer (nm).

This can be obtained as follow:

1 m = 1×10⁹ nm

Therefore,

5.21×10¯⁷ m = 5.21×10¯⁷ × 1×10⁹

5.21×10¯⁷ m = 521 nm

Therefore, the wavelength (λ) of the photon of the green light is 521 nm

What circumstances during the French Revolution permitted the metric system to gain a foothold?

Answers

Answer:

The trade was difficult with the old system.

Explanation:

The existing system for the measurement of goods did not work well in the trade because there are different system used by the people of different cities so metric system was used in the whole country in place of the old system of measurement during the French Revolution in order to make the trade easier and quick across the country. This metric system is extensively used in the trade as compared to the old system of measurement due to its easiness and fast.

If hydroxide is added to an amino acid, how will this affect the charge on the amino acid?

Answers

Answer:

The amino acid will become more negatively charged

Explanation:

Amino acids are organic compounds containing the positive amine (-NH₂) group which is the basic group, and the negative carboxylic (-COOH) group, which is the acidic group. Because they contain both acidic and basic groups with a positive and negative charge that do not contain an overall electric charge, they are known as zwitterions. They are the smallest units of a protein molecule.

When a hydroxide group is added to an amino acid, the PH is increased, and the hydrogen ion on the amine (NH₃+) is removed, making the compound to have an overall negative charge, hence it is no longer a zwitterion.

[tex]\chemfig{N H_3^+-R-CH-COO^- + OH^- \longrightarrow \chemfig{N H_2-R-CH-COO^- + H_2O[/tex]

notice that the amino group has a net negative charge on the product side of the reaction

The addition of hydroxide to an amino acid affects the charge on the amino acid as it will become more negatively charged.

It will become more negatively charged.

Amino Acid

When placed in an electromagnetic field, the physical attribute of matter known as electric charge causes it to experience a force.

A positive or negative electric charge can exist. Amino acids are chemical molecules made up of amino and carboxylate. Hydroxide is a polyatomic ion made up of two elements: oxygen and hydrogen.

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What is a observation

Answers

Observation:
Def.) The action or process of observing some thing or someone carefully or in order to gain information.

Similar: watching, monitoring, examination, and inspection

Hope this helped ♡

100 POINTS & BRAINLIEST !!!! PLEASE HELP three qualitative and three quantitative observations, and one inference

Answers

Answer: 3 qualitative: the word pharmacology is written in blue, the stairs are gray, the tile on the first floor is yellow. 3 quantitative: there are four people wearing yellow, there are Four pink boxes, there are two floors.

Inference: there are many people performing experiments so it’s a lab.

Explanation:

Answer:

Qualitive - The bars are yellow, The floor is green, and the floor has pharmacology on it.

Quantitative - There are 8 support bars, There is 3 gray coats, and there is 27 pills that I can see on that picture.

Inference - There are many people doing experiments because the word pharmacology is on the floor.

Explanation:

This picture tells you that pharmacology is a form of study of medicine and drugs.

Differentiate between a pure substance and a mixture and provide examples

Answers

Explanation:

pure substances are those substances which are made up of one elements

mixture that those substances which are made by more than two or three elements

Answer:

Brainliest is appreciated

Explanation:

Substances which have a specific composition and cannot be separated into any constituents are called pure substances. Pure substances are further divided into elements and compounds. The combination of two or more pure substances is called a mixture. Mixtures can be classified into two types viz. heterogeneous and homogeneous mixtures. 

EXAMPLES

pure substance

gold, pure water, hydrogen gas

mixture substance

oil and water, sand and sugar

Rank the measurements from largest to smallest. .75 Times 10^-3 mL, 325 mu L, 4.11 Times 10^-4 dL.

Answers

Given :

Some volume measurements :

[tex]0.75 \times 10^{-3}\ mL,\ 325\ \mu L,\ 4.11 \times 10^{-4}\ dL[/tex]

To Find :

Rank the measurements from largest to smallest.

Solution :

Now , [tex]1\ \mu l=10^{-3}\ ml[/tex].

Also , [tex]1\ dl=100\ ml[/tex].

So , the measurements in same units are :

[tex]0.75 \times 10^{-3}\ mL,\ 325 \times 10^{-3}\ mL , 4.11 \times 10^{-4} \times 100\ mL\\\\0.75\times 10^{-3}\ mL ,\ 325\times 10^{-3}\ mL ,\ 41.1\times 10^{-3}\ mL[/tex]

So , the order from highest to lowest is :

[tex]325\times 10^{-3}\ mL ,\ 41.1\times 10^{-3}\ mL ,\ 0.75\times 10^{-3}\ mL[/tex]

Hence , this is the required solution .

325 µL > 41.1 µL > 0.75 µL is the ranking of the measurements from largest to smallest.

Measurements have a crucial role in many aspects of daily life, including science, engineering, construction, and cookery. They enable precise measurement, comparison, and communication of an object's size, quantity, or amount. The most widely used measurement systems globally are the metric and imperial systems. There are other measurement systems as well. The International System of Units (SI), generally known as the metric system and based on multiples of ten, is extensively used. It comprises measures for length and mass including metres, grammes, and litres. Units like feet, pounds, and gallons are part of the imperial system, which is primarily used in the United States.

1 mL = 1000 µL      

1 dL = 100 mL

.75 x [tex]10^{-3}[/tex] mL = .75 x [tex]10^{-3}[/tex] x 1000 µL

                      = 0.75 µL

4.11 x [tex]10^{-4}[/tex] dL = 4.11 x[tex]10^{-4 }[/tex]x 100 mL

                     = 0.0411 mL

                     = 41.1 µL

325 µL > 41.1 µL > 0.75 µL

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The boiling point of another member of this homologous series was found to be 309 KK. What is the likely molecular formula for this compound?

Answers

Answer: Pentane C5H12

Explanation:

The boiling point of a substance is simply defined as the temperature whereby a liquid's vapor pressure is equal to the pressure that is surrounding the liquid and hence, the liquid will changes into vapor.

The likely molecular formula for this compound is Pentane i.e C5H12 due to the fact that its boiling point is between Butane with formula C4H10 and Hexane with formula C6H14 boiling points.

The molecular formula of the of the substance is [tex]\bold {C_5H_1_0}[/tex] (pentane).

Boiling point:

It is the temperature at which liquid's vapor pressure is equal to the pressure that is surrounding the liquid and hence, the liquid start to into vaporize.

The boiling point of the given compound is 309 K which is between Butane  and Hexane.

Therefore, the molecular formula of the of the substance is [tex]\bold {C_5H_1_0}[/tex] (pentane).

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Does the density of a liquid depend on its volume? Write your answer as a CER.

Answers

Answer: Yes

Explanation:

Density of a liquid depend on its volume. This is because Density is mass of liquid divided by volume.

Density is inversely proportional to volume.

As density increases, volume decreases and vice versa. The density for water is 1g/ milliliter but it changes with changes in temperature or there are impurities dissolved in it. Ice is less dense that liquid water and it's the major reason it's float because it's volume is inversely proportional to it's density.

Which of the following molecules would form a micelle?a. NaClb.CH3COOHc. CH3COO^-NH^4+d. CH3(CH2)^10COO^-Na^+e. CH3(CH2)^10CH3

Answers

Answer:

CH₃(CH₂)₁₀COONa

Explanation:

The compounds given are

NaCl

CH₃COOH

CH₃COONH₄

CH₃(CH₂)₁₀COONa

CH₃(CH₂)₁₀CH₃

CH₃(CH₂)₁₀COONa will form micelle . Micelle are formed by soap solution which helps in the removal of oily dirt from our clothes . They are spherical shaped tiny droplet of oil which contains the tail of long chain organic compound like salt of long chain fatty  acids . The surface of the droplet is lined with the tip of the chain which consists of negative charge of the tail end . On the average , each micelle contains a specific amount of charge . Due to it , they make colloidal solution in the water and gets washed off my water . The oily dirt is thus removed .

CH₃(CH₂)₁₀COONa   ⇄     CH₃(CH₂)₁₀COO⁻   +    Na⁺

CH₃(CH₂)₁₀COO⁻  part which is long chain of fatty acid gets adsorbed by oily droplet formed by oily dirt  and forming micelle .

ILL GIVE YOU BRAINLIST !!! HAVE TO GET IT RIGHT !!

1.
Explain.
Identify Which are the quantitative data in the example above?

Answers

Answer: The 3rd and 6th bullet point is the quantitative data.

Explanation: Quantitative data is expressed by NUMBERS and Qualitative data is expressed by WORDS. The 3rd and 6th one is correct because they both use numbers to compare how much time hummingbirds spent feeding on nectar.  

A sample of mass 6.814 grams is added to another sample weighing 0.08753 grams.
The subsequent mixture is then divided into exactly 3 equal parts. One of those parts has the yield multiplied by 7.6335 times; what is the final mass?

Answers

Answer:

17.5609grams

Explanation:

According to the question, a sample of mass 6.814 grams is added to another sample weighing 0.08753 grams i.e.

= 6.814 + 0.08753

= 6.90153 grams

The result of this mixture i.e. 6.90153 grams is divided into three equal parts i.e.

= 6.90153 ÷ 3

= 2.30051 grams

This means that each equal part weighs 2.30051 grams

One of the yield (2.30051 grams) is multiplied by 7.6335 times i.e.

= 2.30051 × 7.6335

= 17.56094309

Hence, the final mass is 17.5609grams

QUESTION 10

The stoppers were weighed directly on the balance, but liquids and powders cannot be. Explain why the use
the tare button would be especially useful for liquids and powdered substances.

Answers

I have no idea honestly I don’t remember I had it and I forgot it

What are electrolytes?

Answers

Answer:

Electrolytes are minerals in your body that have an electric charge. They are in your blood, urine, tissues, and other body fluids. Electrolytes are important because they help. Balance the amount of water in your body

Explanation:

Isotopes are atoms with the SAME number of protons, but DIFFERENT numbers of neutrons. Question 8 options: True False

Answers

Answer: The correct answer would be : True

I hope that this helps you !

Suppose that at 9:00 A.M. the temperature of a room is 18°C, and at noon it is 24°C. What was the increase in temperature?____________________________

Answers

Answer:what’s the answer

Explanation:

6. What effect does an increase in blood hydrogen ion levels have on the pH of the blood?

Answers

Answer: the two parameters change inversely; as hydrogen ion concentration increases, pH falls. due to the logarithmic relationship, a large change in hydrogen ion concentration is actually a small change in pH. For example, doubling the hydrogen ion concentration causes pH to fall by just 0.3.

CH3
/
CH3----C-----CH3
/
CH3
Spell out the full name of compound.

Answers

Answer:

A. Neopentane.

B. 2,2-dimethyl-propane.

Explanation:

Hello,

In this case, for the given compound we can spell out two possible names:

A. Neopentane: it is, because the molecule has five carbon atoms wherein there is a central one, bonded to the other four.

B. 2,2-dimethyl-propane: it is, because we find two methyl radicals at the second carbon.

Regards.

Given the ion C2O4-2, what species would you expect to form with each of the following ions?
A. K+______
B. Cu2+______
C. Bi3+______
D. Pb4+______
E. NH4+______
F. H+______

Answers

Answer:

A. K₂C₂O₄          Potassium oxalate

B. CuC₂O₄          Copper oxalate

C. Bi₂(C₂O₄)₃         Bismuth (III) oxalate

D. Pb(C₂O₄)₂         Lead (IV) oxalate

E. (NH₄)₂C₂O₄       Ammonium oxalate

F. HC₂O₄⁻             Acid oxalate

Explanation:

C₂O₄⁻²  → oxalate anion

This is the conjugate base from the H₂C₂O₄ which is the oxalic acid. A weak dyprotic acid that can release 2 protons.

A. 2K⁺  +  C₂O₄⁻²  → K₂C₂O₄          Potassium oxalate

It can be formed by the neutralization of the acid with the base

H₂C₂O₄  + 2KOH  → K₂C₂O₄  +  2H₂O

B. Cu²⁺ +  C₂O₄⁻²   ⇄  CuC₂O₄  ↓

This is a precipitate.

C.  2Bi³⁺  +  3C₂O₄⁻²   ⇄  Bi₂(C₂O₄)₃  ↓

This is a precipitate.

D.  Pb⁴⁺ +  2C₂O₄⁻²   ⇄  Pb(C₂O₄)₂  ↓

This is a precipitate.

E. 2NH₄⁺  +  C₂O₄⁻²   ⇄  (NH₄)₂C₂O₄  ↓

This is a precipitate.

F. This is the conjugate strong base, for the weak acid

H⁺  +  C₂O₄⁻²   ⇄  HC₂O₄⁻

HC₂O₄⁻  + H₂O  ⇄  C₂O₄⁻²  +  H₃O⁺    Ka

HC₂O₄⁻  + H₂O  ⇄  H₂C₂O₄  +  OH⁻    Kb

HC₂O₄⁻  is an amphoteric compound

A. K₂C₂O₄            →Potassium oxalate

B. CuC₂O₄           →Copper oxalate

C. Bi₂(C₂O₄)₃        →Bismuth (III) oxalate

D. Pb(C₂O₄)₂        →Lead (IV) oxalate

E. (NH₄)₂C₂O₄      →Ammonium oxalate

F. HC₂O₄⁻             →Acid oxalate

Given:

C₂O₄⁻²  → oxalate anion

It is the conjugate base from the H₂C₂O₄ which is the oxalic acid. A weak diprotic acid that can release 2 protons.

The reactions involved in this are:

A. 2K⁺  +  C₂O₄⁻²  → K₂C₂O₄          

B. Cu²⁺ +  C₂O₄⁻²   ⇄  CuC₂O₄  ↓

C. 2Bi³⁺  +  3C₂O₄⁻²   ⇄  Bi₂(C₂O₄)₃  ↓

D. Pb⁴⁺ +  2C₂O₄⁻²   ⇄  Pb(C₂O₄)₂  ↓

E. 2NH₄⁺  +  C₂O₄⁻²   ⇄  (NH₄)₂C₂O₄  ↓

↓- This symbol denotes the precipitate formation.

F. H⁺  +  C₂O₄⁻²   ⇄  HC₂O₄⁻

This is the conjugate strong base, for the weak acid.

HC₂O₄⁻  is an amphoteric compound.

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Which of the following is NOT a "weak" interaction?
a. hydrogen bonds b. van der Waals forces c. disulfide bonds d. ionic interactions e. hydrophobic interactions

Answers

Answer:

D.ionic interaction is a strong interaction

When atoms come close enough to one another, an ionic connection is created. Atoms can interact with one another ionically, and this distance is greater than the bonding distance. Therefore, option D is correct.

What is ionic interaction ?

The main interaction taking place in ionic compounds is ionic bonding, a form of chemical bonding that includes the electrostatic attraction between two atoms or ions with dramatically differing electronegativities.

Ions with opposing charges are drawn to one another through ion-ion interactions. They are also known as ionic bonds, because they are what keep ionic compounds together. opposing charges attract each other whereas like charges repel each other.

The whole transfer of valence electrons between atoms is referred to as an ionic bond. It is a kind of chemical connection that produces two ions with opposing charges. In ionic bonding, the nonmetal receives the electrons to become a negatively charged anion while the metal gives them up to become a positively charged cation.

Thus, option D is correct.

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How do vapors and gases differ

Answers

Answer:

Difference between Vapor and Gas

Usually, a vapour phase consists of a phase with two different substances at room temperature, whereas a gas phase consists of a single substance at a defined thermodynamic range, at room temperature

Explanation:

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The first major battle of the Civil War took place at Antietam. Bull Run. Fredericksburg. Chancellorsville. Factor.14y2 + 70y14y2 + 70y= Is the following relation a function ? S = {(1,2),(2,2),(-2,2)} justify your answer What is the difference between being an affiliate and an independent station ?what are the benefits to being an affiliate If you could see my teacher wrote the answer on the right but he wants me to say how he figure it out Which statement describes a potential pitfall of assessing group performance?A. Members of a group may gang-up and unfairly focus their criticism on one person.B. Members of a group may focus too much on results-based evaluations.C. Members of a group may assess the overall accomplishments of the group.D. Members of a group may take a share in the responsibility for the performance of the group A historian is attempting to figure out what a historical document means. Which term best describes this process An object measures 6.2cm x 13.7cm x 26.9cm. Which value is the length of the object? according to the law , naturalized amrican citizens what type of comptuer was name for the cabinet where the brains Each expression with the appropiate property: How were you able to determine if something was living, once living, or never living (non-living)? why is the quotion -100/-5 the same as the quotion 100/5 Which conditional statement is true?If it is a table, it has four legs.If it is Wednesday, it is a weekday.If it has printed words, it is a book.If it is a month, it has thirty-one days. please help please (-1)(-1)(-1)= water in a cup and a kettle can have the same temperature even though the quantities are different . give reasons Steven needs to help a truck containing box's filled with video consoles.He wants to determine the time required to unload the truck.Which quality will help Steven to determine the time required What is direct characterization?A.when a character is described in detail by the authorB.when a character is understood through dialoguec. when a character is revealed through another character's thoughts and feelingsD. when a character is revealed through his or her actions and appearance 3) What people did Columbus encounter? How did they treat Columbus? 14) Cuntos cubos de 1 cm por lado caben dentro de otro cubo que mide por lado 2cm?