A layer of sediment goes through a series of steps on its way to becoming sedimentary rock. These steps are summarized below. Read the steps carefully, and then place them in the correct order. The sediment is gradually buried and compacted. The sediment is deposited by wind, flowing water, or other natural processes. Dissolved minerals completely cement the sediment together.

You need to change them to mole

mole = mass / Molar mass

mole of Ca = 0.910 g / 40.08 g/mol = 0.0227 mol

mole of N = 0.636 g  / 14.01 g/mol = 0.04539 mol

mole of O = 1.453 g / 16.00 g/mol = 0.0908 mol

Then, take the smallest number and divide for all number (in mol that I just found)

Ca = 0.0227 / 0.0227 = 1

N = 0.04539 / 0.0227 = 1.9999 (round it 2)

O = 0.0908 / 0.0227 = 4

So the empirical formula will be Ca1N2O4 ( CaN2O4 )

Answer:

The seafloor

Explanation:

the bottom of the ocean, aka the sea floor.

usually made from sand

Answer:

H2O

Explanation:

With $14.12, and a price of $3 per pound, you can buy 4 pounds of pecans, which equates to 508 pecans, since each pound has 127 pecans.

To determine how many pecans can be bought for $14.12, we need to calculate the number of pounds that can be purchased and then multiply by the number of pecans per pound. The given price is $3 per pound, and there are 127 pecans per pound.

First, divide the total amount of money by the price per pound:

$14.12 ÷ $3.00 = 4.7067 pounds

Since you cannot purchase a fraction of a pecan, we need to find the maximum whole number of pounds that can be bought with $14.12, which is 4 pounds. Multiplying this number by the number of pecans per pound gives the total number of pecans that can be bought:

4 pounds × 127 pecans/pound = 508 pecans

Therefore, you can buy 508 pecans for $14.12.

Yes, this is a balanced chemical equation, and it obeys the Law of Conservation of Mass.

A balanced chemical equation obeys the Law of Conservation of Mass if there are the same numbers of each type of atom on each side of the reaction arrow.

N₂ + 3H₂ ⟶ 2NH₃

Let’s check the numbers.

Atom  On the left  On the right

   N            2                 2

   H            6                 6

We have the same numbers of H and O on each side of the reaction arrow.

The equation is balanced and it obeys the Law of Conservation

of Mass.

most solids contract (shrink) when they get cold.

        Density  =  (mass) / (volume)

If mass doesn't change but volume gets smaller,  then density increases.

Final answer:

The wavelength in a longitudinal wave is the distance from one compression to the next compression or from one rarefaction to the next rarefaction.

Explanation:

In a longitudinal wave, the wavelength is the distance from one compression to the next compression or from one rarefaction to the next rarefaction. This is akin to the peak to peak or trough to trough measurement in transverse waves.

Within the cycle of a longitudinal wave, areas of high pressure, or compressions, where the particles are closest together, and areas of low pressure, or rarefactions, where the particles are further apart, alternate regularly. Consequently, the wavelength can be perceived as the spatial period of the wave—the distance over which the wave's shape repeats.

The understanding of these concepts is crucial for analyzing wave behaviors, such as sound propagation, and the impacts of phenomena like the Doppler effect.

The correct answer should be

D: incredibly

Best Answer:  d  

the subject is who or what you are talking about- the glowing red coals  

the predicate is what they are doing- looked incredibly hot  

looked is your verb because that is what they are doing, how did they look? they looked hot, that is the adverb. the word that describes hot is incredibly, that is the pred adj. because adjectives describe.

Kinetic energy has increased.

The Kinetic Molecular Theory of gases states that the average kinetic energy of the molecules of a gas is directly proportional to its Kelvin temperature.

Thus, if the temperature of the air in a room has increased, the average kinetic energy of its molecules has increased.

What are the options? An increase in density does not occur in an increase of volume or a decrease of mass.

Answer:

Carbon is the basis of all living things

Nitrogen is found in certain foods

Oxygen and hydrogen combine with each other to form water

Carbon, oxygen, hydrogen, nitrogen, phosphorus and sulfur are found in organic compounds

Explanation:

We are all made up of mainly three elements, Carbon, Hydrogen, and Oxygen. These three elements are found in every living organism on our planet, and along with a few trace elements, they make up all the nutrients we take in and use to build our bodies and survive.

Nitrogen is primarily found in meats, and this is because nitrogen is a key element in amino acids (which are used to build proteins), however we cannot directly assimilate nitrogen from the air, so we have to assimilate it through amino acids already synthesized in plants, or in proteins found in meat.

The chemical formula for water is H₂O. Seeing the chemical formula, it is obvious that hydrogen and oxygen are the only elements in the water molecule.

In our bodies, we use phosphorus to form our skeleton and help maintain it, sulfur and nitrogen can be found in some amino acids, and carbon, hydrogen and oxygen can be found in carbohydrates, lipids and proteins.

Answer:

Carbon is the basis of all living things

Nitrogen is found in certain foods

Oxygen and hydrogen combine with each other to form water

Carbon, oxygen, hydrogen, nitrogen, phosphorus and sulfur are found in organic compounds

Explanation:

LOL FREE POINTS

Initial pressure of the gas = 65.3 kPa  

Initial volume of the gas = 654 cm³

Initial temperature of the gas = 6⁰C = 273 + 6 = 279 K

Final pressure of the gas = 108.7 kPa

Final temperature of the gas = 4⁰C = 273 + 4 = 277 K

Using the combined gas law for ideal gases:

P₁V₁/T₁ = P₂V₂/T₂  

where P₁, V₁ and T₁ are the pressure, volume and temperature for the initial state and P₂, V₂ and T₂ are the pressure, volume and temperature for the final state.

Plugging the given data into the combined gas law we have,

(65.3 kPa x 654 cm³) / (279 K) = (108.7 kPa x V₂)/(277 K)

V₂ = (65.3 kPa x 654 cm³ x 277 K) / (279 K x 108.7 kPa)

V₂ = 390.1 cm³

Answer:- B. 0.343

Solution:- Hot metal is added to water so the heat is gained by water and lost by the metal. We assume no heat is lost to the surroundings, so the heat lost by metal is totally used to raise the temperature of water.

First, we will calculate the heat gained by water using the formula:

[tex]q=mc\Delta T[/tex]

where, q is the heat energy, m is the mass, c is specific heat and delta T is change in temperature.

For water:

m = 8.4 g

c = [tex]\frac{4.184J}{g.^0C}[/tex]

[tex]\Delta T=52.1-20=32.1 ^0C[/tex]

Let's plug in the values and calculate q  for water:

[tex]q=(8.4g)(\frac{4.184J}{g.^0C})(32.1^0C)[/tex]

= 1128.17 J

Same amount of heat is lost by the metal. Mass of metal is 68.6 g.

[tex]\Delta T=100-52.1=47.9^0C[/tex]

let's plug in the values in the same formula and calculate the specific heat of metal:

[tex]1128.17J=(68.6g)(c)(47.9^0C)[/tex]

[tex]c=\frac{1128.17J}{(68.6g)(47.9^0C)}[/tex]

[tex]c=\frac{0.343J}{g.^0C}[/tex]

So, the right choice is B.0.343.

Answer:

B

Explanation:

Got it right on ODY(Oddesyware) ;) have an amazing day y'all

Answer:- [tex]1.76*10^-^2[/tex] g of carbon dioxide.

Solution:- The balanced equation for the combustion of methane is:

[tex]CH_4+2O_2\rightarrow CO_2+2H_2O[/tex]

There is 1:1 mol ratio between methane and carbon dioxide.  Grams of methane are converted to moles and then using mol ratio we get the moles of carbon dioxide that could further be converted to grams. The calculations are shown as:

[tex]6.40*10^-^3gCH_4(\frac{1molCH_4}{16gCH_4})(\frac{1molCO_2}{1molCH_4})(\frac{44gCO_2}{1molCO_2})[/tex]

= [tex]1.76*10^-^2gCO_2[/tex]

So, complete combustion of given amount of methane gives [tex]1.76*10^-^2gCO_2[/tex] .

Hey There!

Expand soluble ions to get complete ionic equation:

Sn²⁺(aq) + 2 NO³⁻(aq) +  2 K⁺(aq) + S²⁻(aq) :

SnS(s) + 2 K⁺(aq)  + 2 NO³⁻(aq)

Cancel common ions to get net ionic equation:

Sn²⁺(aq) + S²⁻(aq) => SnS(s)

Hope that  helps!

To obtain the whole ionic equation, expand the soluble ions:

Water molecules surround and solvate the ions, weakening the strong electrostatic interactions between them, which causes the ions to separate and spread equally throughout the solution when ionic compounds dissolve in it.

Equations become :

Sn²⁺(aq) + 2 NO³⁻(aq) +  2 K⁺(aq) + S²⁻(aq) :

SnS(s) + 2 K⁺(aq)  + 2 NO³⁻(aq)

To obtain the net ionic equation, eliminate common ions:

Sn²⁺(aq) + S²⁻(aq) => SnS(s)

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Answer: Option (B) is the correct answer.

Explanation:

An atoms consists of protons, neutrons and electrons. Protons are positively charged, neutrons have no charge and electrons are negatively charged.

Also, when an atom is neutral then there are equal number of protons and electrons.

For example, a neutral sodium atom has 11 protons and 11 electrons.

Therefore, we can conclude that modern atomic theory states that atoms are neutral as they have equal number of protons and electrons.

A. The amount of sugar

Answer: A) The amount of sugar

Explanation:

The independent variable is the one which can be changed, altered or even manipulated manually so as to bring changes and alteration over the dependent variable. The dependent variable is the variable in which changes occur due to independent variable. It is the outcome of the experiment.

The amount of sugar is the correct option. This is because of the fact that amount of sugar can bring a change over the chemical reaction and mass of chemicals being produced.    

Hey There!:

The density is the quotient between the mass of a material and the volume occupied by it, The density can be expressed for a substance or for a mixture of substances. For example, water density in ambient conditions is equal to 1.00 g/cm3, which means that in 1 cm³ or 1 mL, there are 1.0 g of water. Therefore:

D = m / V

D = 20 g / 5 mL

D = 4,0 g/mL

hope that helps!

The density of the object will be "4 g/mL". A further solution is provided below.

The given values in the question are:

Mass,

M = 20 g

Volume,

V = 5 mL

The density of the object will be:

→ [tex]Density = \frac{Mass}{Volume}[/tex]

By substituting the values, we get

→               [tex]= \frac{20}{5}[/tex]

→               [tex]= 4 \ g/mL[/tex]

Thus the above answer is right.

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Hello!

In this chemical equation, there are two main elements. Those elements are magnesium (Mg) and oxygen (O).

Molecules are a group of atoms bonded together, and in this case, the oxygen molecules is O2, but not 2MgO because there are two different molecules in this compound.

Coefficients are a number that multiply an entire molecule, and are also placed in front of it. In this case, O2 has no coefficient, but a subscript of 2. But, every molecule in this equation must have a coefficient and if add a coefficient of 1 to the oxygen molecule, it does nothing to the overall balancing of equations.

Therefore, the coefficient to the oxygen molecule is choice C, 1.

We have that It is seen from the equation that the Number or variable that Precedes the Oxygen atom is 1

Option C

From the question we are told

in this equation 2mg+o2=2mgo what is the coefficient to the oxygen molecule  

A,2  

B,4  

C,1  

D,0

Generally

Coefficient of a molecule is the digit, Number or variable that precedes the Molecule

Therefore

It is seen from the equation that the Number or variable that Precedes the Oxygen atom is 1

Option C

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There're three termination codons

IN RNA IN DNA NAME

UAG TAG "amber"

UAA TAA "ochre"

UGA TGA "opal"

Answer:

There are three termination code words.

Explanation:

From the question stated, we have three termination code words as shown below.

IN RNA              IN DNA               NAME        

UAG                    TAG                  "amber"

 UAA                     TAA                  "ochre"

UGA                    TGA                    "opal"

Hey there!

No !! there is nothing to react. What else other than tin sulphate and zinc sulphate can you make - but then you have only what you started with .

Hope that helps!

If a ZnSO4 solution and a SnSO4 solution were mixed there will be no reaction.

Even though zinc is above tin in the electrochemical series, there will be no reaction when a ZnSO4 solution and a SnSO4 solution were mixed because the two compounds have the same anion.

Displacement reaction only occurs when two compounds have different anions and one of the metal cations involved is lower than the other in the electrochemical series.

From the explanation above, it is clear that, if a ZnSO4 solution and a SnSO4 solution were mixed there will be no reaction.

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Al2O3 has a higher melting point than Na2O. This is because the ionic bond between Al3+ ions and O2- ions is stronger than that between Na+ and O2-. The charge on the Al3+ ion is larger than that of the Na+ ion

Aluminium oxide has a higher melting point than sodium oxide due to the stronger bonding in its crystal lattice and higher lattice energy, which requires more energy to break the bonds during melting.

The reason why aluminium oxide (Al2O3) has a higher melting point than sodium oxide (Na2O) lies in their different types of bonding and bond strengths. Al2O3 is an ionic compound but with some covalent character, meaning that it has stronger bonds and thus requires more energy to break those bonds, leading to a higher melting point. This difference is largely a result of the contrast in the charge and size of the ions involved.

In contrast, Na2O is purely ionic and made up of larger ions with a lower charge. Consequently, Na2O has a weaker lattice energy than Al2O3, implying that less energy is needed to break the bonds in its structure, resulting in a lower melting point.

Furthermore, lattice energy is directly related to melting points in ionic substances that have similar structures. This underlines why Al2O3 with its higher lattice energy has a higher melting point compared to Na2O.

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Answer: The average atomic mass of this elements is 56.7221 amu.

Explanation: The average atomic mass is the sum of the masses of its isotopes each multiplied by their natural abundances.

[tex]\text{average atomic mass}=\sum_{i=1}^{n}(mass)_i(\text{Fractional abundance})_i[/tex]            .....(1)

[tex]\text{Fractional abundance}=\frac{\%\text{ abundance}}{100}[/tex]

We are given 3 isotopes of an element.

For Isotope [tex]X^{55}[/tex],

Mass = 55 amu

Fractional abundance = 0.2780

For isotope [tex]X^{57}[/tex],

Mass = 57 amu

Fractional abundance = 0.4439

Total Fractional abundance = 1

For isotope [tex]X^{58}[/tex],

Mass = 58 amu

Fractional abundance = Total abundance - abundances of the other isotopes

Fractional abundance = 1 - 0.7219

                                     = 0.2781

Now, putting all the values in equation 1, we get

[tex]\text{Average atomic mass}= (55 amu\times 0.2780)+(57 amu\times 0.4439)+(58 amu\times 0.2781)[/tex]

Average atomic mass = 56.7221 amu.

Answer:  

F. The baking soda combined with the hydrochloric acid and bubbles formed.

Explanation:

The formation of gas bubbles is usually a sign of a chemical reaction.

G. is wrong because the absorption of a liquid by a solid is a physical process. Think of using a paper towel to clean up spilled water.

H. is wrong because the dissolving of a solid is a physical process. Think of dissolving sugar in your coffee.

J. is wrong because evaporation is a physical process. Think of a puddle of water drying up in the hot sun.

Answer: The particles move faster and spread further apart

Explanation: