Arrange the following metals in order of increasing reactivity Pb,Al, Sn,Q,Au,and Mg.​

Answers

Answer 1

Answer:

Sn, Q,Au, Al,Pb

Explanation:

Because thats hw that works

HOPE IT HElPS


Related Questions

A penny is 2.5 g. How many kilograms does a penny weigh?

Answers

Answer:

The penny now weighs 0.0025kg

Hope this helps please give me brainliest!

God bless!

0.0025 I think is the answer

Help this is not that hard I think

Answers

Answer:

1,) True

2.) False

3.) A Moraine

Explanation:

Hope this helps

Please Mark As Brainliest

You will learn in this course that organic compounds have covalent bonds with a significant amount of energy stored in them. This is why we burn fossil fuels to generate energy to heat our homes or drive our cars. Given this information, which of the compounds listed below would you expect to have the most energy is its carbon-carbon bond?

Answers

Answer:

See explanation

Explanation:

This question is obviously supposed to be a multiple choice question but the options are missing.

However, the question intends to test the student's knowledge about combustion of fossil fuels. Fossil fuels are mostly composed of hydrocarbons of different chain lengths.

The longer the chain length, the greater the energy released when the compound is burnt since there are more energy stored in its bonds.

Hence, the correct answer to this question will be the option that contains the greatest number of C-C and C-H bonds.

An ideal sample weighing 1.28g at 127C (temp) and 1 atm has a volume of 0.250L. Determine the molar mass of the gas.

Answers

Answer:

Molar mass of gas = 160 g/mol

Explanation:

Given data:

Mass of sample gas = 1.28 g

Temperature of sample gas = 127°C (127+273 = 400K)

Pressure of sample gas = 1 atm

Volume of sample gas = 0.250 L

Molar mass of gas = ?

Solution:

Formula:

PV = nRT

R = general gas constant = 0.0821 atm.L/ mol.K

Now we will put the values in formula.

1 atm × 0.250 L = n × 0.0821 atm.L/ mol.K ×400K

0.250 L.atm   = n ×32.84atm.L/ mol

n = 0.250 L.atm/32.84atm.L/ mol

n = 0.008 mol

Molar mass of gas:

Number of moles = Mass/molar mass

0.008 mol = 1.28 g / molar mass

Molar mass = 1.28 g / 0.008 mol

Molar mass = 160 g/mol

NEED HELP ASAP! BRAINLEST + THANKS!
if three electrons are available to fill three empty 6p atomic orbitals, how will the electrons be distributed in the three orbitals
a.) one electron in each orbital
b.)two electrons in one orbital, one in another, none in third
c.) three in one orbital, one in other two
d.) cannot be predicted, determined by random chance

Answers

Answer:

A) one electron in each orbital

Explanation:

Orbitals get electrons one at a time. If there are three electrons and three empty orbitals, then one electron will go into one orbital!

Calculate the density of helium if a balloon with a capacity of 5.00 L holds 0.890 g.

Answers

Answer:

Explanation:

Density is m/V. Also, 1 liter = 1000 [tex]cm^3[/tex]. So, we get 0.890/(5*1000) = [tex]1.78*10^{-4}[/tex] g/cm^3. You can convert this to kg/m^3 as well by multiplying it by 10. Depends which one you want.

The ratio of the mass in grams and volume in cubic meters gives the density. The density of 0.80 gm helium is 1.78 × 10 ⁻⁴ g/cm³.

What is density?

Density is the amount or the number of entities that can be contained in an area. It is denoted by ρ and is calculated as,

Given,

Mass = 0.890 gm

Volume = 5000 cm³

ρ = Mass ÷ Volume

= 0.890 ÷ 5000

= 1.78 × 10 ⁻⁴ g/cm³

Therefore, 1.78 × 10 ⁻⁴ g/cm³ is the density of helium.

Learn more about density here:

https://brainly.com/question/1563196

#SPJ2

A neutral (net charge
zero) atom of silicon contains:
A
28.09 electrons
B
16 electrons
C
14 electrons
D
38 electrons

Answers

Answer:

C 14

Explanation:

Silicon atom has 14 protons. Given that a positive and a negative neutralize each other you need 14 electrons to neutralize the 14 protons.

An object has a mass of 4 grams and a volume of 2 cm3. What is the density of the object

Answers

Answer:

The answer is 2.0 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question

mass = 4 g

volume = 2 cm³

We have

[tex]density = \frac{4}{2} \\ [/tex]

We have the final answer as

2.0 g/cm³

Hope this helps you

Answer:

D = 2 g/cm³

Explanation:

Density = mass over volume

D= m/v

Step 1: Define

m= 4 grams

v= 2 cm³

Step 2: Substitute and Evaluate

D= 4 g/2 cm³

D= 2 g/cm³

what this pic meaning ? ​

Answers

Step 1: Separate particles of the solute from each other
Step 2: Separate particles of the solvent from each other
Step 3: Combine separated solute and solvent particles to make solution

i need help please!

asap

Answers

Answer:

Earth is pulling up on the book with a force of 4n i think

Explanation:

Calculate the enthalpy change to raise the temperature of 180.0 g of water from 10.0°C to 40.0°C. The molar heat capacity for water is 75.3 J/Kmol. a. What values have you been given? b. What value are you trying to find? c. Which heat equation do you need? d. Now solve the problem.

Answers

Answer:

22572J

Explanation:

a) The following values have been given:

Mass of water = 180.0g

Initial temperature = 10°C

Final temperature = 40°C

molar heat capacity for water = 75.3J/Kmol

To calculate the specific heat capacity of water (c), we divide the molar heat capacity by molar mass of water (18g/mol)

That is; 75.3/18

= 4.183 Jg/K

b) The enthalpy change denoted by ∆H is the value we are trying to find.

c) To find enthalpy change (∆H), we use the formula:

∆H = m × c × ∆T

Where; m= mass

c= specific heat capacity

∆T= change in temperature =

(final temp - initial temp)

∆H = m × c × ∆T

∆H = 180 × 4.18 × (40-10)

∆H = 180 × 4.18 × 30

∆H = 22572J

please hurry asap I WILL MARK BRAINLEST

The Statue of Liberty is made out of copper and was once shiny and copper-colored. Over the years, the copper has gone through a process called oxidation, where it has changed into a new material.

What has occurred?

an endothermic reaction
an energy formation
a chemical reaction
a precipitate formation

Answers

Answer:

an endothermic reaction

Explanation:

An endothermic reaction has occurred.

Answer:

endothermic

Explanation:

took the quiz

All the following are examples of selective breeding EXCEPT a wild dog that finds and mates with a domestic dog. neutering a horse that is particularly small for its breed. adding sheep from another country to the bloodline to help combat disease. purposely mating larger pigs to increase the amount of meat produced.

Answers

Answer:

A. a wild dog that finds and mates with a domestic dog.

Explanation:

I WILL GIVE YOU BRAINLIEST!!!

Refer to the Newsela article "How You Can Make a Solar Oven To Cook with a Pizza Box."

What is the author's purpose in mentioning variables in designing the solar oven?


to show how easy it is to produce solar energy

to encourage readers to vary the design

to explain how wasteful solar energy production can be

to show the author did not think too hard about the design

Answers

Answer:

To encourage readers to vary the design

Explanation:

what is the ionic charge lf this atom ​

Answers

Answer:

An ionic charge of 2-

Explanation:

The number of electrons is 8 and the number of protons is 2, subtract the two and the difference is the ionic charge. Hope this helps! :)

Answer:

This answer would be 2

Explanation:

The way that I have always done it is you put protons in tally marks (without crossing) over the top of the neutrons and mark them out one by one and whichever one that you have leftover that is your charge.

Hope this helps!

What are some things that uses oxygen

Answers

Answer:

Common uses of oxygen include production of steel, plastics and textiles, brazing, welding and cutting of steels and other metals, rocket propellant, oxygen therapy, and life support systems in aircraft, submarines, spaceflight and diving.

cy sprints 100 meters in 13 seconds going south. what is his average velocity?

Answers

Answer:

Explanation:

This should be in physics.

d = 100 meters south

t = 13 seconds

v = d/t

v = 100 / 13

v = 7.69 m/s going south.

The point is that you have to specify the direction.

which of the following is a state of matter ? particle,thermal,plasma, and diffuse ?

Answers

Answer:

a particle

Explanation:

matter takes up space, and particles take place in atoms

Answer:

plasma is a state of matter

Please help!!!
When 38 g of a metal at 92 °C is added to
43 g of water at 22°C, the temperature of the
water rises to 30°C. What is the specific heat
capacity of the metal? Assume no heat was
lost to the surroundings.

Answer in units of
J/g degrees C

Answers

The specific heat  capacity of the metal : 0.610 J/g° C  

Further explanation  

The law of conservation of energy can be applied to heat changes, i.e. the heat received/absorbed is the same as the heat released  

Q abs = Q received  

Heat can be calculated using the formula:  

Q = mc∆T  

Q = heat, J  

m = mass, g  

c = specific heat, joules / g ° C  

∆T = temperature difference, ° C / K  

∆T = T(final temp) - T(initial temp)

mass of metal = 38 g

T initial metal = 92 °C

mass of water = 43 g

T final water = 30  °C

T initial water = 22°C

c water = 4.18 J/g° C  

Heat absorbed by water

[tex]\tt Q=m.c.\Delta T\\\\Q=43\times 4.18\times (30-22^oC)\\\\Q=1437.92~J[/tex]

the specific heat  capacity of the metal

Q water = Q metal

[tex]\tt 1437.92=38\times c\times (92-30)\\\\c=0.610~J/g^oC[/tex]

How to find the number of atoms?

Answers

To find the number of atoms, we multiple the number of mols by Avogadro's number, about 6.02x10^23

Mark Brainliest!

Answer:

to calculate the numbers of atoms in a sample, divide it's weight in grams by the amu atomic mass from the periodic table, then multiply the result by avogadro's number: 6.0 × 10^24

A train in Japan can travel 813.5 miles in 5 hours

Answers

Answer:

162.7miles/hr

Explanation:

Given parameters:

Distance covered by the train  = 813.5miles

Time taken  = 5hours

Unknown:

Speed of the train  = ?

Solution:

Speed is a physical quantity.

It is mathematically expressed as;

      Speed  = [tex]\frac{distance}{time}[/tex]

So, input parameters and solve;

   Speed  = [tex]\frac{813.5}{5}[/tex]  = 162.7miles/hr

Which isotope has 45 neutrons?
O A. 80,36KT
OB. 80,35Br
O C. 78,345e
O D. 34,17C1

Answers

Answer:

Br.

neutron = mass number - atomic number

youcan see the answer at the pic

The isotope that has 45 neutrons is B. 80,35Br.

What is the isotope?

The neutron can be obtained by subtracting the protons from the mass number. In the question, we have a proton that is numbered, 35 and a mass number of 80.

So, to get the neutron, we would subtract the protons from the mass number as follows;

80 - 35 = 45. The element that is described by this data is Bromine. Therefore, the correct option number is B. 80,35Br.

Learn more about isotopes here:

https://brainly.com/question/14220416

#SPJ6

what are the 20 element​

Answers

Answer:

you shoudl ask this question more clearly?

Explanation:

Answer:

The 20th Element is Calcium (Ca).

The 20 Elements are:

Hydrogen

helium

lithium

berilium

boron

carbon

nitrogen

oxygen

flourine

neon

sodium

magnesium

aluminium

silicon

phosphorus

sulphur

chlorine

argon

potassium

calcium

The half life of radon 222 is 3.824 days, how much time must pass of one fourth of a given amount of radon to remain?

Answers

Answer:

After 7.648 days, you will see one quarter.

Explanation:

1 → 0.5 → 0.25

Since half life of radon-222 is 3.824 days, you need twice this time to get one quarter at the end.

2 ⋅ 3.824 = 7.648 days.

Explain what is meant by the term "excited state" as it applies to an electron. Is an electron in an excited state higher or lower in energy than an electron in the ground state? Is an electron in an excited state more or less stable than an electron in the ground state?

Answers

Answer:

Excited state of an electron is the state attained by an electron after it has absorbed energy and it moves further from the nucleus.

an electron is at higher energy when excited and at lower energy when at ground state.

an excited electron is less stable due to the decrease in the nuclear force of attraction and the grounded electron is more stable due to it's close distance to the nucleus.

An electron in excited state has its electron present in higher energy level while an electron in ground state is present in lower energy level.

What is an energy level ?

Electrons present in an atom revolve in different orbits which are stationary states and are also called as energy levels. The energy levels are numbered as integers which are also called as principal quantum numbers.

Energy of the stationary state is given as E= -R

1/n² where R

is the Rydberg's constant. When an electron is excited, and it moves from lower to higher energy levels there is absorption of energy, while when it moves from higher energy level to lower energy level it radiates or gives out energy in the form of radiation.

They can also be defined as the distances between electron and nucleus of an atom . Electrons present in K energy level have least energy .Energy level diagrams are studied to understand nature of bonding , placement of electrons in orbits and and elemental behavior under certain conditions.

Learn more about energy level,here:

https://brainly.com/question/17396431

#SPJ2

Your aquarium looks blurred and you wanted to clean it.How will you use recantation technique to separate water from the pebbles and other designs

Answers

Answer:

why do you not ask to your maam the answer

What does the “188” represent in Tantalum-188

A. mass number
B. atomic number
C. mass defect

Answers

Answer:

mass number

Explanation:

When there is an element name followed by a dash and then a number, the number simply represents the mass number.

for example:

Oxygen- 18

18 represents the mass number of this particular isotope

Which of the following elements would be brittle?
Sulfur
Magnesium
Rubidium
Lithium

Answers

Answer:

Sulfur

Explanation:

Sulfur because it is a dull and brittle

What is the ratio of aluminum atoms to oxygen atoms in aluminum oxide?​

Answers

Answer:

Al2 O3 or 2:3

Explanation:

The aluminum oxide consists of two elements, which are oxygen atoms and aluminum atoms, and there are 2 aluminum atoms and 3 oxygen atoms in aluminum oxide. The ratio from aluminum atoms to oxygen atoms is 2:3.

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the ratio of aluminum atoms to oxygen atoms in aluminum oxide is  2:3.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound.  Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. The ratio of aluminum atoms to oxygen atoms in aluminum oxide is  2:3. Aluminium oxide is an ionic compound.

Therefore, the ratio of aluminum atoms to oxygen atoms in aluminum oxide is  2:3.

To learn more about chemical compound, here:

brainly.com/question/26487468

#SPJ6

True/False: When a substance is heated, the change in energy causes the bonds between particles to become stronger.​

Answers

Answer:

false

Explanation:

the energy causes the bonds to become looser

Other Questions
If a plate boundary has a mid-range ridge, it must be a (blank)PLS HELP HEELPWhich sentence uses correct capitalization? A. I told Jilly and Ryan to take a left at Main Street and then head South for two miles before hitting Bolt Avenue. B. I told Jilly and Ryan to take a left at Main Street and then head south for two miles before hitting Bolt Avenue. C. I told Jilly and Ryan to take a left at Main street and then head south for two miles before hitting Bolt avenue. D. I told Jilly and Ryan to take a left at Main street and then head South for two miles before hitting Bolt avenue. . Express each exponent in expanded form: StartFraction 6 times 6 times 6 times 6 times 6 times 6 times 6 Over 6 times 6 times 6 times 6 EndFraction 2. Divide common factors: StartFraction 6 times 6 times 6 times 6 times 6 times 6 times 6 Over 6 times 6 times 6 times 6 EndFraction. 4 sixes in the numerator and denominator are crossed out. What is the exponent of the simplified power? Round 3,004 to the nearest whole number HELPPPP ANSWER PLEASEEEEE TYYY With an average acceleration of 0.50 m/s?, how long will it take a cyclist starting fromrest to reach 13.5 m/s? WILL GIVE 100 POINTS AFTER YOU ANSWERWhat is the median of this data set: 17, 13, 18, 20, 17, 15, 1220171916 On an architect's blueprint, 1 inch corresponds to 2 feet. Find the length of a wall represented by a line 2 1/2 inches long on the blueprint Which sequences of transformations confirm the congruence of shape II and shape I?a reflection of shape I across the x-axis followed by a 90 clockwise rotation about the origina reflection of shape I across the x-axis followed by a 90 counterclockwise rotation about the origina reflection of shape I across the y-axis followed by a 90 counterclockwise rotation about the origina reflection of shape I across the y-axis followed by a 90 clockwise rotation about the origina reflection of shape I across the x-axis followed by a 180 rotation about the origin PLEASE HELP NEED IN 15 MINUTES! 20 POINTS!42^2 + 69^2 = x^2 Pythagorean Theorem Formula is a^2 + b^2 = c^2. Which adaptation helps the arctic fox survive by allowing it to sneak up on its prey undetected? a bushy tall b large litter size o ability to eat a wide variety of foods c white winter coat and brown summer coat PLZ HURRY IT'S URGENT!!!What is the slope of the line? y=x5 options: undefined 1 0 -5 Write 3236 in lowest terms when y= 4x, if y= 36, what is x? The Pyramids were built during the New Kingdom. *TrueFalse Janet enjoys eating jelly sandwiches and drinking milk. She is particular about proportions, though: For every jelly sandwich she eats, she must drink exactly one glass of milk, and vice versa. Janet can purchase the jelly for her sandwiches in two jar sizes: 20 ounces and 40 ounces. Janet cares only about the total amount of jelly she has available and not at all about the jar size. In other words, she's just as happy with two 20-ounce jars as she is with one 40-ounce jar.In this scenario, jelly sandwiches and glasses of soda are:___________ a. perfect complements b. perfect substitutes c. neither complements or susitutes) According to the article, which of the following people or groups would MOST LIKELY agree with the idea that the most important reason to explore Africa was to gain knowledge? PLEASE HELP MEEEE 25 points! I WILL GIVE U BRAINLIESTWhich statement is an example of situational irony in "The Piece of String"?The mayor is a foolish person who accidentally makes an extremely wise decision.Though Hauchecorne is a rogue, what most harms his reputation is the innocent act of picking up string from the ground.Master Malandain and Master Hauchecorne never reconcile their differences about a halter.Master Malandain, who is a kind man, unintentionally causes another character great harm. When we place a teabag in hot water, the water takes on a brownish colour. Explain which process has taken place. How many moles are in a sample of 2.39 x 10^23 atoms of sodium (Na)