3. How much force does a 15 kg baby have that is crawling through the house at an acceleration of 12 m/s2? *​

Answer:

A: Both models represent atoms with the same atomic number.

Explanation:

The atomic number equals the number of protons.

The correct statement is that both models represent atoms with the same atomic number.

Isotopes are those molecules which are having the same atomic numbers but different atomic masses.

In the given model both they have the same number of electrons and protons it means they are not ions, but are having different atomic masses as number of neutrons are different.

Hence both models represent atoms with the same atomic number.

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Answer:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Answer:

V₂ = 1473.03 L

Explanation:

Given data:

Initial volume = 980 L

Initial pressure = 107.2 atm

Initial temperature = 71 °C (71 +273.15 = 344.15 K)

Final temperature = 13°C (13+273.15 = 286.15K)

Final volume = ?

Final pressure = 59.3 atm

Formula:  

P₁V₁/T₁ = P₂V₂/T₂  

Solution:

V₂ = P₁V₁ T₂/ T₁ P₂  

V₂ = 107.2 atm × 980L × 286.15 K / 344.15 K×   59.3 atm

V₂ = 30061774.4 atm .L. K / 20408.095 atm. K

V₂ = 1473.03 L

The electronegativity of sugar molecule is the the ability of an atom to attract an electron pair towards itself which is shared with another atom in a chemical bond.

Electronegativity is defined as the ability of an atom to attract an electron pair towards itself when share an electron or electrons with another atom in a chemical bond.

This electronegativity occurs between the atoms which made covalent bond with one another. Sugars also contain covalent bonds because all the covalent bonds in sugar molecules arise as a result of electron sharing between the atoms.

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Answer:

The coldness will move from the pan to the ice cube. ... Thermal energy moved from a cooler object to a warmer object through radiation.

Explanation:

Answer:

242X

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Answer:

12 moles of CO₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

CO₂ + H₂O —> H₂CO₃

From the balanced equation above,

1 mole of CO₂ dissolves in water to produce 1 mole of H₂CO₃.

Finally, we shall determine the number of moles of CO₂ that will dissolve in water to produce 12 moles of H₂CO₃. This can be obtained as follow:

From the balanced equation above,

1 mole of CO₂ dissolves in water to produce 1 mole of H₂CO₃.

Therefore, 12 moles of CO₂ will also dissolve in water to produce 12 moles of H₂CO₃.

Thus, 12 moles of CO₂ is required.

Answer:

It has hollow bones and jaws.

Explanation:

The cladogram shows that Species C has both hollow bones and Jaws. Species A has hollow bones while species B has Jaws. The cladograms shows that species C has both the characteristics.

Answer:

C. It has neither hollow bones nor jaws.

Explanation:

Answer:

d = 4.5 g/cm³

Metal cube is made up off titanium.

Explanation:

Given data:

Edge length of cube = a = 11.4 mm

Mass of metal cube = 6.67 g

Density and identity of metal = ?

Solution:

First of all we will calculate the volume of cube.

V = a³

V = (11.4mm)³

V = 1481.54 mm³

mm³ to cm³:

1481.54 mm³× 1 cm³/ 1000 mm³

1.482 cm³

Density:

d = m/v

d = 6.67 g/ 1.482 cm³

d = 4.5 g/cm³

Metal cube is made up off titanium because density of titanium is 4.5 g/cm³.

The given question is incomplete. The complete question is:

A chemist adds 95.0 ml of a 1.5M aluminum chloride solution to a flask. Calculate the mass in grams of aluminum chloride the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

Answer:  19.0 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]

where,

n = moles of solute

[tex]V_s[/tex] = volume of solution in ml

moles of [tex]AlCl_3[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{xg}{133.34g/mol}[/tex]

Now put all the given values in the formula of molarity, we get

[tex]1.5=\frac{x\times 1000}{95.0\times 133.34}[/tex]

[tex]x=19.0g[/tex]

Therefore, the mass in grams of aluminum chloride the chemist has added to the flask is 19.0

Answer:

When a radioactive atom undergoes a nuclear decay event (the significant decay modes are alpha decay, beta decay, electron capture, and spontaneous fission), the decaying nucleus undergoes a transformation in identity associated with the change in the number of protons in the nucleus

Answer:

36.09% is the mass percent composition of calcium in calcium chloride

Explanation:

Mass percent is defined as one hundred times the ratio between the mass of a compound (In this case, Calcium), and the total mass of the sample:

Mass Percent = Mass compound / Total mass of the sample × 100

Computing the values of the problem:

Mass Percent = 0.690g / 1.912g * 100

Mass percent =

Answer:

t

Explanation:

Answer:

4,3,2

Explanation:

HOPE THIS HELPS

Answer:

The balanced equation of the reaction is given as follows:

M₂CO₃ + 2HCl ---> 2MCl + H₂O + CO₂

The mole ratio of the metallic carbonate to carbon (iv) oxide is 1:1

The metal is Lithium

Explanation:

The balanced equation of the reaction is given below:

M₂CO₃ + 2HCl ---> 2MCl + H₂O + CO₂

From the equation of reaction, 1 ,mole of the metal carbonate reacts with 2 moles of excess HCl to produce 2 moles of the metallic salt, 1 mole of water and 1 mole of CO₂.

The mole ratio of the metallic carbonate to carbon (iv) oxide is 1:1

Molar mass of CO₂ = 44 g/mol

Number of moles of CO₂ in 1.206 g of CO₂ = 1.206 g / 44 g/mol = 0.0274 moles

Therefore, 2.002 g of M₂CO₃ = 0.0274 moles since all the metallic carbonate was reacted with excess HCl

mass of 1 mole of M₂CO₃ = 2.002/0.0274 = 73.06 g

M₂CO₃ =73.06

2 * M + 12 + 3 *16 = 73.06

2M = 73.06 - 60

M = 13.06/2

M = 6.53 g

Since, the metal belongs to group 1, the metal is most likely Lithium as the molar mass of M is closest to Lithium.

The balanced equation of the reaction is defined as the number of atoms present equally in the reactant and products.

[tex]M_2CO_3 + 2HCl ---> 2MCl + H_2O + CO_2[/tex]

The metal "M" in the reaction is Lithium.

The steps for the balanced reaction is as follows:-

After doing all the steps in the reactions the balanced equation of the reaction is given below:

[tex]Li_2CO_3 + 2HCl ---> 2liCl + H_2O + CO_2[/tex]

This is the balanced reaction.

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Answer:

a. Rate constant: 1.2118x10⁻⁴ yrs⁻¹

b. The age of the object is 20750 years

Explanation:

a. We can solve the rate constant in an isotope decay by using Half-Life, as follows:

K = Ln 2 / Half-life

K = ln 2 / 5720 years =

b. The general equation of isotope decay is:

Ln [A] = -kt + Ln [A]₀

Where [A] is concentration of the isotope after time t,

k is rate constant

and [A]₀ initial concentration of the isotope.

Computing the values of the problem:

Ln [0.89x10⁻¹⁴] = -1.2118x10⁻⁴ yrs⁻¹t + Ln [1.1x10⁻¹³]

-2.5144 = -1.2118x10⁻⁴ yrs⁻¹t

20750 years = t

The age of the object is 20750 years

Answer:

B. Ovule

Explanation:

pistil holds the stigma and the ovule

stem holds the flower

leaf is just a leaf

Answer:

x = (20 - 3y) / 5

Explanation:

Let

french fires be represented by = x

cheeseburgers be represented by = y

The equation is given as;

5x + 3y = 20.

Rearrange the equation to solve for the  number of French fries.

This means we are to make french fries (x) the subject of equation

5x + 3y = 20

5x = 20 - 3y

x = (20 - 3y) / 5

Answer:

In inorganic chemistry, a ternary compound is a compound containing three different elements. An example is sodium phosphate, Na3PO4. The sodium ion has a charge of 1+ and the phosphate ion has a charge of 3-. Therefore, three sodium ions are needed to balance the charge of one phosphate ion

Explanation:

Answer:

Not all ionic compound are composed of only monatomic ionic a ternary ionic compound is an ionic compound composed of three element in a typical ternary ionic compound there is still one type of cation and one type of anion involved the cation the anion or both is a polyatomic ion

Answer:

B is the answer.

Explanation:

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a. W = 0 J

b. W = - 308.028 J

Given

Nitrogen gas expands in volume from 1.6 L to 5.4 L

Required

The work done

Solution

Isothermal :

W = -P . ΔV

Input the value :

a. At a vacuum, P = 0

So W = 0

b. At pressure = 0.8 atm

W = - 0.8 x ( 5.4 - 1.6)

W = -3.04 L.atm ( 1 L.atm = 101.325 J)

W = - 3.04 x 101.325

W = - 308.028 J

Answer:

a. 2 HgO(s) ⇒ 2 Hg(l) + O₂(g)

b. 0.957 g

Explanation:

Step 1: Write the balanced equation

2 HgO(s) ⇒ 2 Hg(l) + O₂(g)

Step 2: Convert 130.0 °C to Kelvin

We will use the following expression.

K = °C + 273.15

K = 130.0°C + 273.15

K = 403.2 K

Step 3: Calculate the moles of O₂

We will use the ideal gas equation.

P × V = n × R × T

n = P × V/R × T

n = 1 atm × 0.0730 L/0.0821 atm.L/mol.K × 403.2 K

n = 2.21 × 10⁻³ mol

Step 4: Calculate the moles of HgO that produced 2.21 × 10⁻³ moles of O₂

The molar ratio of HgO to O₂ is 2:1. The moles of HgO required are 2/1 × 2.21 × 10⁻³ mol = 4.42 × 10⁻³ mol.

Step 5: Calculate the mass corresponding to 4.42 × 10⁻³ moles of HgO

The molar mass of HgO is 216.59 g/mol.

4.42 × 10⁻³ mol × 216.59 g/mol = 0.957 g

Answer:

t = 21.5 min.

Explanation:

Hello!

In this case, since the kinetics of a first-order reaction is:

[tex]\frac{[A]}{[A]_0}=exp(-kt)[/tex]

Thus, since we are given the 11.7 min for a 58.6-% consumption, we can compute the rate constant, k:

[tex]ln(1-0.586)=-kt\\\\k=\frac{ln(0.414)}{-t}=\frac{-0.882}{11.7min}=0.0754min^{-1}[/tex]

Now, for the second problem, as the new consumption is 80.2%, we can compute the required time as shown below:

[tex]ln(1-0.802)=-kt\\\\t=\frac{ln(198)}{k} \\\\t=\frac{-1.62}{0.0754min^{-1}}\\\\t=21.5min[/tex]

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Answer:

see explanation

Explanation:

The polarity of bonds is determined by electronegativity differences. As a guideline we define bonds as:

ionic if Δχ > 2.0

polar if 2.0 > Δχ > 0.5

nonpolar if 0.5 > Δχ

(X being electronegativity)

The polarity of bonds helps us understand non-covalent forces between molecules, such as hydrogen bonding and dipole-dipole interactions. It also helps us interpret the reactivity of molecules. For example, the Si-H bond (χSi = 1.8, χH = 2.1) is more hydride-like than the C-H bond (χC = 2.5, χH = 2.1). Therefore silanes react with acids to make H2, whereas phosphines (χP = 2.1) and hydrocarbons do not. Similarly, electrophilic substitution reactions occur more readily on Si-H and P-H compounds than they do on C-H compounds.

Answer:

EDG 2020

Explanation:

It comes from older rocks,It forms from sediments,it is one of the main 3 rocks, con form from materials solidified from solution.

Answer:

It comes from older rocks.

It forms from sediments.

It is one of the three main types of rocks.

It can form from materials solidified from solutions,

Explanation:

Answer:

Solids cant react to each other because they are the same room temperature

Answer:

A is the correct answer.

Explanation:

A mixture of solids is the correct answer.