represents the covalent bond by dashes and shows the arrangement of covalently bonded atoms _____.

There are 2 molecules of Carbon dioxide(CO2)

Given

Molecules of CO2

Required

The number of molecules

Solution

The coefficient of a molecule shows the number of that molecule, while the subscript after the name of the atom indicates the number of that atom in the molecule

Because there is a coefficient of 2 in front of the CO2 molecule, then the number of CO2 molecules is 2

Answer:

19.4 g/cm^3

Explanation:

Answer:

The answer is D jessim should spin the glove quickly while walking in a circle around nancy.

Explanation:

Answer:

sun

Explanation:

source means where it comes from and the source of energy comes from the sun

Answer:

Q = 146.25  J

Explanation:

Given that,

The mass of 10 copper pennis = 25 grams

It warm up from 23°C to 38°C.

The specific heat capacity of copper is 0.39 J/g°C

We need to find the energy absorbed by the pennies. The expression for the energy absorbed is given by :

[tex]Q=mc\Delta T\\\\Q=25\times 0.39\times (38-23)\\\\Q=146.25\ J[/tex]

So, 146.25  J of energy is absorbed by the pennies. Hence, this is the required solution.

Answer:

It is balanced

Explanation:

There is 1 Carbon, 2 Hydrogen, and 1 Oxygen on the right and 1 Carbon, 1 Oxygen and 2 Hydrogen on the left. This equation is balanced.

Answer:B

Explanation:

Answer:

0.246M

Explanation:

0.123M x 2 = 0.246M

Due to Sr(OH)2  has the coefficient of 2.

The [OH⁻] concentration for 0.123 M Sr(OH)₂  solution at 25°C  is 0.246M

The amount of a solution's solute to either the solvent or the entire solution is called Concentration.

The most common way to express concentration is in terms of mass per unit volume.

The solute concentration, on the other hand, can be expressed in moles or units of volume.

We assume

Sr(OH)2 is a strong base, such that

Sr(OH)₂(s) + H₂O(l) −−−→Sr²⁺(aq)+2OH⁻aq)

The [OH⁻] concentration for 0.123 M Sr(OH)₂  solution at 25°C

= 2 * 0.123

= 0.246 M

As two  [OH⁻] are being produced by Sr(OH)₂ .

The [OH⁻] concentration for 0.123 M Sr(OH)₂  solution at 25°C  is 0.246M.

To know more about Concentration

https://brainly.com/question/10725862

#SPJ2

Answer:

try to calcutlae on paper

Explanation:

try to calculate on paper

Answer:

gas X

Explanation:

Answer:

[tex]m_{C_6H_5Cl}=65.7gC_6H_5Cl[/tex]

Explanation:

Hello!

In this case, according to the given balanced chemical reaction:

[tex]C_6H_6 (l) + Cl_2 (g) \rightarrow C_6H_5Cl (s) + HCl (g)[/tex]

We can see there is 1:1 between benzene and chlorobenzene as the relavant product; thus, since the molar mass of benzene is 78.11 g/mol and that of chlorobenzene is 112.55 g/mol, the theoretical yield for this reaction turns out:

[tex]m_{C_6H_5Cl}=45.6gC_6H_6*\frac{1molC_6H_6}{78.11gC_6H_6 }*\frac{1molC_6H_5Cl}{1molC_6H_6}*\frac{112.55gC_6H_5Cl}{1molC_6H_5Cl} \\\\m_{C_6H_5Cl}=65.7gC_6H_5Cl[/tex]

Best regards!

Answer:True

Explanation:

Answer:

False

Explanation:

Its false, the bonds become weaker.

Answer:

Explanation:

4) What is the molarity of the following solution?

Number of moles = 1.71 mol

Volume of solution = 5.15 L

Molarity of solution = ?

Solution:

Molarity = number of moles / volume in L

Molarity = 1.71 mol / 5.15 L

Molarity = 0.33 M

5) How many moles of solute are contained in the following solution?

Volume of solution = 126mL  = 126 mL× 1 L /1000 mL = 0.126 L

Molarity of solution = 4.03 M

Number of moles of CaCl2 = ?

Solution:

M = number of moles / volume in L

4.03 M  =  number of moles /  0.126 L

Number of moles = 4.03 M  × 0.126 L ( M = mol / L)

Number of moles = 0.508 mol

6) How many grams of solute are contained in the following?

Volume of solution = 102.7 mL (102.7 mL× 1 L /1000 mL = 0.1027 L)

Molarity  = 7.99 M

Mass of solute (KOH) = ?

Solution:

M = number of moles / volume in L

7.99 M = number of moles / 0.1027 L

Number of moles = 7.99 M × 0.1027 L

Number of moles = 0.82 mol

Mass of KOH:

Mass = number of moles × molar mass

Mass = 0.82 mol × 56.1 g/mol

Mass = 46.00 g

Answer:

he ocean

Explanation:

They are sea cretures who origanly lived in water (or near i forgot)

Answer:

The limiting reagent is the reactant that is completely used up in a reaction, and thus determines when the reaction stops. From the reaction stoichiometry, the exact amount of reactant needed to react with another element can be calculated.

Explanation:

The Reactant That Limits The Rate (or Speed) Of A Chemical Reaction. The Reactant That Can Produce The Greatest Amount Of Product.

The reactant that is used up before the others best describes a limiting reactant.

Reactant is a starting material in a chemical reaction.

Hence, the reactant that are used up before the others best describes a limiting reactant.

To learn more about limiting reactant here

https://brainly.com/question/21538336

#SPJ2

Cl₂0₅ + H₂O → 2HCIO₃

2Fe(OH)₃ → Fe₂O₃ + 3H₂O

Given

Chemical equations

Required

The balanced combination equation

Solution

There are several types of reactions that can occur

Synthesis/combination : 2 elements combine to form a single product

A + B⇒AB

Decomposition: One compound breaks down into 2 components

AB⇒A + B

Decomposition is the reverse of syntesis reaction

A balanced equation shows that the number of atoms from the reactant and product sides is the same

The chemical equations that fulfill the two things above (combined and balanced reactions) are:

Cl₂0₅ + H₂O → 2HCIO₃

2Fe(OH)₃ → Fe₂O₃ + 3H₂O

Answer:

Cl2O5 + 3H2O ⟶ HClO3  is the correct answer

Explanation:

Answer:

1) 61.8%

Explanation:

(4.2/6.8)*100

Answer:

something that travels through a medium, transporting energy from one location to another location without transporting matter.

Explanation:

Answer:

A wave is a disturbance that moves energy from one to place to onother

i hope i can help

Answer:

0.9248kPa

Explanation:

We are to convert from torr to kPa;

 To solve this problem, more appropriately the conversion process is from:

      torr to Pa and then kPa

These are units of pressure;

         1 torr  = 1Pa

 So;

         924.8torr is the same as 924.8Pa

           1000Pa  = 1kPa

          924.8Pa  = [tex]\frac{924.8}{1000}[/tex]    = 0.9248kPa

Answer:

[tex]Q=330J[/tex]

Explanation:

Hello!

In this case, since the energy involved during a heating process is calculated as shown below:

[tex]Q=mC(T_2-T_1)[/tex]

Whereas we consider the mass, heat capacity and temperature; we are able to plug in the given data to obtain:

[tex]Q = 20g*1.1\frac{J}{g\°C}(40\°C-25\°C)\\\\Q = 330J[/tex]

Best regards!

Answer:

138.14547456

Explanation:

How many moles Aluminium in 1 grams? The answer is 0.037062379468509.

We assume you are converting between moles Aluminium and gram.

You can view more details on each measurement unit:

molecular weight of Aluminium or grams

The molecular formula for Aluminium is Al.

The SI base unit for amount of substance is the mole.

1 mole is equal to 1 moles Aluminium, or 26.981538 grams.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between moles Aluminium and gram.

Answer:

[tex]\boxed {\boxed {\sf About \ 138 \ grams \ of \ aluminum}}[/tex]

Explanation:

To convert from moles to grams, we must use molar mass.

This can be found on the Periodic Table, so look for the symbol for aluminum: Al

We can use this number as a ratio.

[tex]\frac { 26.981538 \ g \ Al} { 1 \ mol \ Al}[/tex]

Multiply by the given number of moles: 5.12

[tex]5.12 \ mol \ Al *\frac { 26.981538 \ g \ Al} { 1 \ mol \ Al}[/tex]

Multiply. The moles of aluminum will cancel.

[tex]5.12*\frac { 26.981538 \ g \ Al} { 1}[/tex]

[tex]138.145475 \ g \ Al[/tex]

Round. The original measurement of moles has 3 significant figures, so our answer must also have 3 sig figs.

For the number we calculated, that is the ones place. The 1 in the tenth place tells us to leave the 8.

[tex]138 \ g \ Al[/tex]

There is about 138 grams of aluminum in 5.12 moles.

Answer:

Mechanical

Explanation:

mechanical energy:

energy that an object has

because of its motion or

position

Answer:

Ths is question uncompleted!

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Explanation:

Answer:

a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Explanation:

Here's an example. When you burn wood, It releases Carbon dioxide, water vapor, and ashes. It just depends what chemicals you use ^^

Answer:

sodium ion

Explanation:

And, so if we gots a representation of Na+ , or Cl− , we know that for the sodium ion, while there are 11 charged nuclear particles (how do we know this?), there are 10 charged extranuclear particles, 10 electrons.

brainliest pls

Materials are transferred between individual cells and their internal environment through the cell membrane by diffusion, osmosis, and active transport. During diffusion and osmosis, molecules move from a higher concentration to a lower concentration. Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution. Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. This would be the diffusion.

Answer:

Sodium Hydroxide + Sulfuric Acid = Sodium Sulfate + Water

2NaOH + H2SO4 → Na2SO4 + 2H2O

Explanation:

To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above.

Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.

Ionic charges are not yet supported and will be ignored.

Replace immutable groups in compounds to avoid ambiguity. For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will.

Compound states [like (s) (aq) or (g)] are not required.

You can use parenthesis () or brackets [].