explain functional group containing carbon hydrogen and oxygen

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The molar mass of the unknown nonelectrolyte compound is

Using the formula;

∆T = K m i

Where;

K = freezing point depression constant

m = molality of the solution

i = Van't Hoft factor

Note that i = 1 since the compound is a nonelectrolyte.

To find molality;

Number of moles = 0.520 g/Molar mass

Let the molar mass of the unknown compound be MM

Number of moles = 0.520 g/MM

Number of kilograms of solvent = 4.12 g/1000 = 0.00412 Kg

Molality = 0.520 g/MM * 1/0.00412 Kg

Freezing point depression is 4.20 °C

To find the molar mass of the compound;

4.20 °C = 3.90 °C/m *  0.520 g/MM * 1/0.00412 Kg

4.20  = 492.23/MM

MM = 492.23/4.20

MM = 117.19 g/mol

Learn more; https://brainly.com/question/14762341

Answer:

a neutral solution has a pH of 7.

ph=-log(H+)

Explanation:

hence (H+)

=10⁷mol/dm³

Answer:

This statement is true.........

Answer:

i think true

Explanation:

Answer: Balanced equation that is formed by combining these two half reactions is [tex]Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O[/tex].

Explanation:

A chemical equation which contains same number of atoms on both reactant and product side is called a balanced chemical equation.

For example, [tex]Cu \rightarrow Cu^{2+} + 2e^{-}[/tex]

[tex]NO^{-}_{3} + 2e^{-} + 2H^{+} \rightarrow NO^{-}_{2} + H_{2}O[/tex]

On cancelling the common species from both these half-reactions, the complete balanced equation will be as follows.

[tex]Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O[/tex]

Thus, we can conclude that balanced equation that is formed by combining these two half reactions is [tex]Cu + NO^{-}_{3} + 2H^{+} \rightarrow Cu^{2+} + NO^{-}_{2} + H_{2}O[/tex].

Answer:

205.12 atm

Explanation:

Using the ideal gas law equation:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

R = 0.0821 Latm/perK)

T = temperature (K)

n = number of moles (mol)

According to the information in this question;

P = ?

V = 34.25 mL = 34.25 ÷ 1000 = 0.03425L

n = 0.215 mol

T = 125.0°C = 125 + 273 = 398K

Using PV = nRT

P = nRT ÷ V

P = (0.215 × 0.0821 × 398) ÷ (0.03425)

P = 7.025 ÷ 0.03425

P = 205.12 atm

Answer:

Examples of physical change include changes in the size or shape of matter. Changes of state—for example, from solid to liquid or from liquid to gas—are also physical changes. Some of the processes that cause physical changes include cutting, bending, dissolving, freezing, boiling, and melting.

Explanation:

TMS has 12 protons which are all equivalent and four carbons, which are also all equivalent. This means that it gives a single, strong signal in the spectrum, which turns out to be outside the range of most other signals, especially from organic compounds.

Answer:

Metilaminas

Explanation:

Las metilaminas a menudo están presentes en los tejidos corporales de organismos marinos como crustáceos, moluscos y en todos los peces marinos como N-óxido de trimetilamina, donde actúan para estabilizar la proteína que se desestabiliza por la presión y también se cree que actúa como un depresor del punto de congelación. en peces polares

Las metilaminas tienen olor a pescado podrido, basura o huevos podridos, de modo que una acumulación de metilamina en el cuerpo da como resultado la liberación de un olor a pescado en la amplitud, el sudor y la orina de un individuo

Answer:

The moon's rotation and revolution take the same time.​

Explanation:

the moon's rotation and orbit is closely synced-up with our planet's.

Answer:

Heterogeneous mixture...is the answer

The dude above me is right. I thought he was wrong, so I put A but it turns out he was right!

Answer:

Difference between Solid Liquid and Gases

Solids Liquids Gases

Highly Strong intermolecular forces between the molecules, leads to a definite volume in Solids. The intermolecular forces are stronger than gases but weaker than solids. The intermolecular forces are practically non-existent. Thus, there is no definite volume.

Solids have a definite shape to them. Liquids do not have a definite shape. Gases do not have a definite shape.

The intermolecular space between solids is absent. The intermolecular space is moderate but present. The intermolecular space is free-flowing and plenty.

The force of attraction between the molecules is incredibly high. The force of attraction between molecules is pretty moderate. There is no intermolecular force of attraction between the molecules.

Answer:

All ionic compounds with alkali metals are soluble.

Explanation:

Certain elements always form soluble substances. Most of those elements are alkali metals/group 1 metals.

Answer:

use grahamns law to get the answer

Answer:

[tex]m_{solvente}=2400mg[/tex]

Explanation:

¡Hola!

En este caso, con la información dada, es posible inferir que este problema es acerca del porcentaje en masa del soluto y que se calcula de la siguiente manera, en términos de la masa de soluto y solución:

[tex]\% m=\frac{m_{soluto}}{m_{solucion}} *100\%[/tex]

De este modo, como conocemos el porcentage y la masa del soluto, podemos calcular la masa de la solución primero:

[tex]m_{solucion}=\frac{m_{soluto}}{\% m} *100\%\\\\m_{solucion}=\frac{600mg}{20\%} *100\%\\\\m_{solucion}=3000mg[/tex]

Esto quiere decir que la masa del solvente es:

[tex]m_{solvente}=m_{solucion}-m_{soluto}\\\\m_{solvente}=3000mg-600mg\\\\m_{solvente}=2400mg[/tex]

¡Saludos!

Answer:

c

B

B

I Hope u can understand and it's correct answer

Answer:

To produce a solution that frees at -50°C we need 1668.5 g of ethylene glycol

Explanation:

Formula for freezing point depression is:

Freezing T° of pure solvent - Freezing T° of solution = Kf . m . i

Our solute is the ethylene glycol, then water is our solvent.

As ethylene glycol is a non ionic compound, i = 1 (Van't Hoff factor, numbers of ions dissolved)

Kf = Cryoscopic constant. For water is 1.86 °C/m

We replace data:

0°C - (-50°C) = 1.86 °C/m . m . 1

To determine grams of ethylene glycol needed, we need to find m (molality)

50°C / 1.86 m/°C = m → 26.8 mol/kg

As this moles of solute are contained in 1kg, definetely we need 26.8 moles of ethylene glycol.

To find the answer, we convert moles to mass:

26.8 mol . 62.07g / mol = 1668.5 g

Answer:lol sorry for that but I don’t know

Explanation:free trial date

Okay

Answer:

Part (1a): The number of moles are 2.14 moles.

Part (1b): The number of moles are 12.2 moles.

Part (1c): The number of moles are 0.545 moles.

Part 2: The number of molecules are 1.38 × 10²⁵.

Part 3: The number of moles are 5.65 moles.

Part 4: The number of atoms are 1.81 × 10²⁴.

Part 5: The number of molecules are 1.20 × 10²⁶.

Explanation:

According to the mole concept:

1 mole of substance contains 6.022 × 10²³ number of atoms or molecules.

Part (1a): 1.29 × 10²⁴ hydrogen atoms in H

As, 6.022 × 10²³ number of hydrogen atoms present in 1 mole

So, 1.29 × 10²⁴ number of hydrogen atoms present in [tex]\frac{1.29\times 10^{24}}{6.022\times 10^{23}}=2.14[/tex] mole

Part (1b): 7.36 × 10²⁴ oxygen atoms

As, 6.022 × 10²³ number of oxygen atoms present in 1 mole

So, 7.36 × 10²⁴ number of oxygen atoms present in [tex]\frac{7.36\times 10^{24}}{6.022\times 10^{23}}=12.2[/tex] mole

Part (1c): 3.28 × 10²³ Na atoms

As, 6.022 × 10²³ number of Na atoms present in 1 mole

So, 3.28 × 10²³ number of Na atoms present in [tex]\frac{3.28\times 10^{23}}{6.022\times 10^{23}}=0.545[/tex] mole

Part 2:

As, 1 mole of oxygen contains 6.022 × 10²³ number of molecules

So, 23.0 moles of oxygen contains 23.0 × 6.022 × 10²³ = 1.38 × 10²⁵ number of molecules

Part 3:

As, 6.022 × 10²³ number of H₂SO₄ molecules present in 1 mole

So, 3.4 × 10 number of H₂SO₄ molecules present in [tex]\frac{3.4\times 10}{6.022\times 10^{23}}=5.65[/tex] mole

Part 4:

As, 1 mole of Na contains 6.022 × 10²³ number of atoms

So, 3.0 moles of Na contains 3.0 × 6.022 × 10²³ = 1.81 × 10²⁴ number of atoms

Part 5:

As, 1 mole of O₃ contains 6.022 × 10²³ number of molecules

So, 200 moles of O₃ contains 200 × 6.022 × 10²³ = 1.20 × 10²⁶ number of molecules

Answer: The mass of [tex]H_2[/tex] produced is 0.153 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex] ......(1)

Given mass of zinc = 5.0 g

Molar mass of zinc = 65.38 g/mol

Putting values in equation 1, we get:

[tex]\text{Moles of zinc}=\frac{5.0g}{65.38g/mol}=0.0765mol[/tex]

Given mass of HCl = 10.0 g

Molar mass of HCl = 36.46 g/mol

Putting values in equation 1, we get:

[tex]\text{Moles of HCl}=\frac{10.0g}{36.46g/mol}=0.274mol[/tex]

The given chemical equation follows:

[tex]Zn+2HCl\rightarrow ZnCl_2+H_2[/tex]

By stoichiometry of the reaction:

If 1 mole of zinc reacts with 2 moles of HCl

So, 0.0765 moles of zinc will react with = [tex]\frac{2}{1}\times 0.0765=0.153mol[/tex] of HCl

As the given amount of HCl is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.

Thus, zinc is considered a limiting reagent because it limits the formation of the product.

By the stoichiometry of the reaction:

If 1 mole of zinc produces 1 mole of [tex]H_2[/tex]

So, 0.0765 moles of zinc will produce = [tex]\frac{1}{1}\times 0.0765=0.0765mol[/tex] of [tex]H_2[/tex]

We know, molar mass of [tex]H_2[/tex] = 2 g/mol

Putting values in above equation, we get:

[tex]\text{Mass of }H_2=(0.0765mol\times 2g/mol)=0.153g[/tex]

Hence, the mass of [tex]H_2[/tex] produced is 0.153 g

Answer:

CH₂

Explanation:

From the question given above, the following data were obtained:

Mass of compound = 1 g

Mass of CO₂ = 3.14 g

Mass of H₂O = 1.29 g

Empirical formula =?

Next, we shall determine the mass of Carbon and hydrogen present in the compound. This can be obtained as follow:

For Carbon, C:

Mass of CO₂ = 3.14 g

Molar mass of CO₂ = 12 + (2×16)

= 12 + 32

= 44 g/mol

Molar mass of C = 12 g/mol

Mass of C =?

Mass of C = molar mass of C/ Molar mass of CO₂ × Mass of CO₂

Mass of C = 12/44 × 3.14

Mass of C = 0.86 g

For hydrogen, H:

Mass of C = 0.86 g

Mass of compound = 1 g

Mass of H =?

Mass of H = (Mass of compound) – (mass of C)

Mass of H = 1 – 0.86

Mass of H = 0.14 g

Finally, we shall determine the empirical formula of the cyclopropane. This can be obtained as follow:

Mass of C = 0.86 g

Mass of H = 0.14 g

Divide by their molar mass

C = 0.86 / 12 = 0.07

H = 0.14 / 1 = 0.14

Divide by the smallest

C = 0.07 / 0.07 = 1

H = 0.14 / 0.07 = 2

Thus, the empirical formula of cyclopropane is CH₂

Answer:

Molecular mass of NH3 = ( 14 + 3 ) = 17 g

[tex]PV = \frac{m}{m _{r}} RT \\ P \times 50.0 \times {10}^{ - 6} = \frac{68.0}{17} \times 8.314 \times (30.0 + 273) \\ P = \frac{68.0 \times 8.314 \times 303}{17 \times 50.0 \times {10}^{ - 6} } \\ P = 2.02 \times {10}^{8} \: Pascals[/tex]

[tex]mass \: of \: the \: car \: = 1250 \: kg \\ \\ velocity \: of \: the \: car \: is \: = 2.3m/s \\ \\ formula \: to calculate \: momentum \: \\ \\ \: \: \: \: p = mv \: \: \: (m = mass \: and \: v = velocity) \\ \\ momentum \: = 1250 \times 2.3 = 2875m/s[/tex]

Answer:

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Explanation:

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Answer:

3.54g Cl-/dm³

Explanation:

To solve this question we must, as first, find the mass of chloride ions finding first, the moles of MgCl2. Then, we must convert the cm³ to dm³ (1cm³ = 0.001dm³).

Moles MgCl2 -Molar mass: 95.211g/mol-

2.38g * (1mol / 95.211g) = 0.0250 moles MgCl2

Moles Cl-:

0.0250 moles MgCl2 * (2mol Cl- / 1mol MgCl2) = 0.0500 moles Cl-

Mass Cl- -Molar mass: 35.45g/mol-:

0.0500 moles Cl- * (35.45g / mol) = 1.77g of chloride ions

dm³:

500cm³ * (0.001dm³ / 1cm³) = 0.500dm³

The concentration is:

1.77g of chloride ions / 0.500dm³ =

Answer:

approximately 1.772 grams

Explanation:

molecular mass of AlCl3 is 132 g per mole and of Al(OH)3 is 78 g per mole

the reaction is

AlCl3 + 3 NaOH ---> Al(OH)3 + 3 NaCl

from the reaction it is clear that 1 mole AlCl3 makes 1 mole Al(OH)3

implies 132g AlCl3 gives 78g Al(OH)3

Implies 3g AlCl3 gives

[tex]3 \times \frac{132}{78} = 1.772 \: g \: al(oh)3[/tex]