Help me plzz I don’t get this question

Answer:

Molecular Formula is a representation of a compound that what atoms of elements are present in the molecule of a compound. The actual numbers of atoms of each element that occur in the smallest free unit or molecule of the compound is expressed by the molecular formula of the compound. Molecular formulas contain no information about the arrangement of atoms. Because of this, one molecular formula can describe a number of different chemical structures only.

Answer:

It was part of a slow underwater eruption.

Explanation:  Or just A (:

Answer:

i agree with the human above me

Explanation:

love ye have a great day but i didnt have a good day bc my uncle ate my cheese puffs :'( anyways i got a 100 on the assaignment and this was the only answer i had to look up im proud of me

Answer:

c = 100 J/g.°C

Explanation:

Given data:

Mass of lime = 20 g

Heat absorbed = 80,000 J

Initial temperature = 10°C

Final temperature = 50°C

Specific heat capacity of lime = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 50°C - 10°C

ΔT = 40°C

80,000 J = 20 g×c×40°C

80,000 J = 800°C×c

c = 80,000 J /800g.°C

c = 100 J/g.°C

The specific heat capacity of the lime would be  is  c = 100 J/g.°C

The following formula should be used:

Q = m.c. ΔT

here

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now

ΔT = 50°C - 10°C

= 40°C

So,

80,000 J = 20 g×c×40°C

80,000 J = 800°C×c

c = 100 J/g.°C

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Answer:

D. The noble gas configuration has been reached.

Explanation:

Answer:

d. Metallic

c. S

Explanation:

A metallic bond is an interatomic bond in which valence electrons are constantly moving between atoms like a sea of electrons.

2. The bond type described in the second problem is an ionic bond. This results in the formation of crystal lattice with strong bonds.

Answer:

finely divided iron is used as catalyst in the manufacture of ammonia by haber's process

Explanation:

Intermolecular force s between particles in a matter holds particles of molecules together in substances.

Answer:

Explanation:

The moment magnitude scale is a scale that rates earthquakes by estimating the total energy released by an earthquake . Estimating the total amount of energy released, enables comparison of earthquakes more accurately

i hope this helps :)

Answer:

potential energy is maximum in extreme position and kinetic energy is maximum at it's mean position.

Answer:

i think is o helium, He........

The electron dot structure of neon, argon, krypton, xenon and radon contains 8 valence electrons whereas, helium contains only 2 electrons. Thus, He is different from others.

Noble gases are 18th group elements in periodic table. They have completely filled electronic configuration. They need not to lose or gain electrons because they are stable.

Noble gases are helium, neon, argon , krypton, xenon and radon. He contains 2 electrons only. Its valence shell K is filled that's why He is considered as noble gas.

All other elements in the group neon, argon, krypton, xenon and radon contains 8 valence electrons. Therefore, the dot structure of He is different from its group members.

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Answer:

please follow me

you can just search it on chrome and it will give you the answer to your question

Explanation:

2 H2O 2 → 2H 2 O + O2.........

Answer:

a) three pea halves

b) Electron configuration of the fluorine ion 1s2 2s2 2p6

Explanation:

The fluorine atom has seven electrons in its outermost shell and a total of nine electrons occupying three shells.

In the fluoride ion, the fluorine atom accepts one more electron to complete its outermost shell configuration (to have a filled shell as shown).

Hence the fluoride ion has 10 electrons with an electronic configuration of 1s2 2s2 2p6.

Answer:

C₇H₁₄ and C₁₀H₂₀

Explanation:

The empirical formula is that which expresses the composition of a compound in the simplest whole number ratio of the atoms of the different elements that makes up the compound.

 C₇H₁₄ and C₁₀H₂₀

 In both species if we divide the number of atoms by the simplest common factor, we get CH₂

   C₇H₁₄  = CH₂ dividing by 7

   C₁₀H₂₀ =  CH₂ dividing by 10

Answer:

Average atomic mass of carbon = 12.01 amu

Explanation:

Given data:

Average atomic mass = ?

Percent abundance of C-12 = 98.93%

Percent abundance of C-13 = 1.07%

Solution:

Average atomic mass of carbon = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass of carbon = (98.93×12)+(1.07×13) /100

Average atomic mass of carbon=  1187.16 + 13.91 / 100

Average atomic mass of carbon = 1201.07/ 100

Average atomic mass of carbon = 12.01 amu

Answer:

15.2L at STP

Explanation:

Given reaction expression;

         CaCO₃ → CaO + CO₂

Number of moles of CaCO₃  = 0.68mol

Unknown:

Volume of CO₂ produced at STP = ?

Solution:

To solve this problem, we must first find the number of moles CO₂ produced,

     1 mole of CaCO₃ will produce 1 mole of CO₂

   0.68mole of CaCO₃ will produce 0.68mole of CO₂ at STP

Now;

             1 mole of gas occupies a volume of 22.4L at STP;

           0.68mole of CO₂ will then occupy 0.68 x 22.4  = 15.2L at STP

Answer:

25mph

Explanation:

cold fronts generally Advance at an average speed of 20 to 25 miles per hour. Towards the east faster in the winter than summer and are usually oriented along the northeast to Southwest line

Answer:

Multiply 1.25 by 0.04 and divide the result obtained by 1,000

Explanation:

Given parameter:

  Density of the gas:

           1.25 g/L

Now the problem here is to convert to ounce/milliliter;

     1gram  = 0.04ounce

     1 liter = 1000mL

 So;

    1.25g/ L  x [tex]\frac{0.04 ounce}{1g}[/tex]  x [tex]\frac{1L}{1000mL}[/tex]   = 5 x 10⁻⁵ounce/mL

Answer:

100000J

Explanation:

Given parameters:

Power of the crane  = 25000W

Time taken  = 4s

Unknown:

Work done by the crane  = ?

Solution:

Power is the rate at which work is being done. It is expressed as:

      Power  = [tex]\frac{Work done }{Time taken }[/tex]  

  Work done  = Power x Time taken

Now insert the parameters and solve;

  Work done  = 25000 x 4  = 100000J

Gravitational potential energy to kinetic energy. Hence, option A is correct.

What is kinetic energy?

Kinetic energy is a form of energy that an object or a particle has by reason of its motion

If an avalanche occurs, the snow on the mountain accelerates downslope, converting more gravitational potential energy to kinetic energy.

Hence, option A is correct.

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the answer is boyle's law

Answer:

Boyle's Law

Explanation:

Other guy is right Edg. 2020

Mass of the product : 6.039 g

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products

Reaction

Ba(s)+Cl₂(g)⇒BaCl₂(s)

mol Ba(MW=137,327 g/mol) :

[tex]\tt \dfrac{4}{137.327}=0.029[/tex]

Mass of BaCl₂ :(MW=208,23 g/mol)

[tex]\tt 0.029\times 208.23=6.039~g[/tex]

Answer:

i think it MIGHT be D

Explanation:

Answer:

b

Explanation:

edge :)

Answer:

iron nail

Explanation:

Answer:

Motion energy – also known as mechanical energy – is the energy stored in moving objects. As the object moves faster, more energy is stored. Motion energy is the sum of potential and kinetic energy in an object that is used to do work.

Explanation:

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Thanks!

Answer:

Answer:

1. Positive

2. Negative

3. Positive

4. Negative

5 positive

Explanation: I did this test before

The words have a positive, negative, positive, negative, positive connotation respectively in each of the given sentence.

Connotation is defined as a property of a particular word or name  which describes the ideas or qualities of the word.It is rather being named explicitly or described.

It is frequently described as a positive or negative connotation  which is in connection with its pleasing or displeasing connection. Connotation can have words with literal meaning with what they specifically denote.

There are  two types of connotations positive connotation and negative connotation wherein positive connotation has  positive impact while negative connotation has negative impact.It describes the primary word and it is not necessary that it be present in the sentence or phrase.

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Answer: savory

Explanation:

SWEET is better in my opinion.

Answer:

c.

Explanation:

Gravitational potential energy will rises

Answer:

D

Explanation:

Sweat glands remove waste

The correct association that lies between the structure and one of its functions is option D Sweat glands remove waste.

The sweat represents the fluid that comprises of mainly of water also there is much dissolved solid wastage that should be excreted via the sweat glands. It eliminates the excess water and salts also it served the function of colling the body at the time of thermoregulation.

Therefore, the option D is correct.

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