A container was found in the home of the victim that contained 124 g of ethylene glycol in 420 g of liquid. What was the percentage of ethylene glycol?

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:

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.

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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:

[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:

[tex]9.40x10^{23}molecules[/tex]

Explanation:

Hello!

In this case, since we are given the volume of N2O3 and pressure and temperature for the STP (1.00 atm and 273.15 K), we can compute the moles, considering the ideal gas equation as shown below:

[tex]PV=nRT\\\\n=\frac{PV}{RT} \\\\n=\frac{1atm*35L}{0.08206\frac{atm*L}{mol*K}*273.15K}\\\\n=1.56mol[/tex]

Now, by using the Avogadro's number it is possible to compute the molecules of this case in 1.56 moles:

[tex]molecules=1.56mol*\frac{6.022x10^{23}}{1mol} =9.40x10^{23}molecules[/tex]

Best regards!

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 [].

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:

gas X

Explanation:

Answer:

try to calcutlae on paper

Explanation:

try to calculate on paper

Answer:

A D-cell is a source of electric energy. A bulb is an energy receiver that produces light. To make a complete circuit, electricity must travel in a circle from one end of the battery to the other.

Explanation:

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:

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.

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Answer:

19.4 g/cm^3

Explanation:

Answer/Explanation:

193.96 g/mol

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:

water droplets falling on the clay

Explanation:

i finished this test and it was the right answer so lol

Answer:True

Explanation:

Answer:

False

Explanation:

Its false, the bonds become weaker.

Answer:

sun

Explanation:

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

Answer:

the answer is none of the above

Answer:

2457.58×10²³ atoms of oxygen

Explanation:

Given data:

Number of moles of Na₂Cr₂O₇ = 58.3 mol

Number of atoms of oxygen = ?

Solution:

First of all we will calculate the number of moles of oxygen in 58.3 moles of Na₂Cr₂O₇.

1 mole of Na₂Cr₂O₇ contain 7 moles of oxygen.

58.3 mol × 7 = 408.1 mol

Number of atoms of oxygen:

1 mole contain 6.022×10²³ atoms

408.1 mol × 6.022×10²³ atoms / 1 mol

2457.58×10²³ atoms

The chemical formula : 3HgBr₂(Mercury(II) bromide)

Given

The chemical formulas of Mercury and Bromine

Required

The appropriate chemical formula

Solution

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

The number of molecules is determined by the coefficient in front of the compound

the number of atoms is determined by the subscript after the atom and the coefficient

Three molecules⇒ coefficient = 3

one atom of Mercury ⇒Hg

two atoms of Bromine ⇒ Br₂

The chemical formula : 3HgBr₂

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:

he ocean

Explanation:

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

Answer:

lol thx

Explanation:

Answer:

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

Explanation:

Explanation:

half is wasted, release into the environment in the form of heat.