Write the balanced equation for the formation of the Grignard reagent from bromobenzene.

Answer: 5.77 * 10¹⁴s⁻¹

Explanation:

Speed = Frequency * Wavelength

Frequency = Speed/ Wavelength

Speed of light = 3 * 10⁸ m/s

Frequency =  (3 * 10⁸ m/s) / (5.20 x 10⁻⁷m)

= 5.77 * 10¹⁴hz

= 5.77 * 10¹⁴s⁻¹

The theoretical yield of urea : = 227.4 kg

Given

Reaction

2NH3(aq)+CO2(aq)→CH4N2O(aq)+H2O(l)

128.9 kg of ammonia

211.4 kg of carbon dioxide

166.3 kg of urea.

Required

The theoretical yield of urea

Solution

mol Ammonia (MW=17 g/mol)

=128.9 : 17

= 7.58 kmol

mol CO₂(MW=44 g/mol) :

= 211.4 : 44

= 4.805 kmol

Mol : coefficient of reactant , NH₃ : CO₂ :

= 7.58/2 : 4.805/1

=3.79 : 4.805

Ammonia as limiting reactant(smaller ratio)

Mol urea based on mol Ammonia :

=1/2 x 7.58

=3.79 kmol

Mass urea :

=3.79 kmol x 60 g/mol

= 227.4 kg

Answer:

5 1 2 4and 3 this is correct way

Answer: No that is false.

Explanation: There are 6 basic elements of life here they are. Have cells, have chemicals, respond to stimuli, reproduce, grow and develop, and use energy.

Answer: A

Explanation: equilibrium is where all the paricles are at the

Answer:

Explanation:

The nucleus of an atom is about 10-15 m in size; this means it is about 10-5 (or 1/100,000) of the size of the whole atom. ... (10-15 m is typical for the smaller nuclei; larger ones go up to about 10 times that.) Mass. Although it is very small, the nucleus is massive compared to the rest of the atom.

Answer:

See attached picture.

Explanation:

Hello!

a) In this case, since oxygen there is present as C=O, as shown on the attached picture, we can see the following functional groups:

- Double bond (alkene).

- Amide group.

- Nitrile group.

b) In this case, since Et suggest an ethyl radical (CH3-CH2-) and the presence of those 2 oxygen atoms accounts for carboxyl, we have:

- Two carboxyl groups for an ethyl propanedioate ester.

Best regards!

Answer:

Because an empirical formula only shows the most simple ratio between elements in a compound while the molecular formula gives the actual number of each element in a certain molecule. Take the example of glucose. It has a molecular formula of [tex]C_6H_{12}O_6[/tex]. However, the smallest ratio between the atoms are 1:2:1 respectively. So the empirical formula would be [tex]CH_2O[/tex]. Clearly not representing the molecular formula.

Explanation:

Answer:

Mud

Explanation:

Mud is a solid mass and water is a liquid mass.  The water takes some attributes of the solid and mixes the two forms of matter.  both masses create mud  it's basic alchemy

Answer:

Flashlight

Explanation:

A flashlight gives out heat

hope this helps...

Answer:

Decomposition

Explanation:

H2CO3 Breaks down to H2O and CO2

Answer:

c. the amount of fossil fuels being burned increased

Explanation:

Carbon dioxide gas concentration increased over the time due to burning of fossil fuels increased. Fossil fuels are organic compounds which releases carbondioxide gas as a result of burning of fossil fuels in the engines of vehicles and industries. With the passage of time, number of vehicles increases in the world which needs more fossil fuels and due to burning of that fossil fuels, more carbondioxide gas is released.

The relative molecular mass of the gas​ : 64 g/mol

Given

Helium rate = 4x an unknown gas

Required

The relative molecular mass of the gas​

Solution

Graham's Law

[tex]\tt \dfrac{r_1}{r_2}=\sqrt{\dfrac{M_2}{M_1} }[/tex]

r₁=4 x r₂

r₁ = Helium rate

r₂ = unknown gas rate

M₁= relative molecular mass of Helium = 4 g/mol

M₂ = relative molecular mass of the gas​

Input the value :

[tex]\tt \dfrac{4r_2}{r_2}=\sqrt{\dfrac{M_2}{4} }\\\\16=\dfrac{M_2}{4}\\\\M_2=64~g/mol[/tex]

Answer:

the last one

Explanation:

Answer:

Answer:

B

When a sample of solid, liquid, or gas matter heats up, it expands. When matter gets hot, its particles gain kinetic energy. The increased kinetic energy pushes the particles farther apart. This causes the matter to expand.

None of these. Hence, option B is correct.

Kinetic energy is a form of energy that an object or a particle has by reason of its motion.

When a sample of solid, liquid, or gas matter heats up, it expands. When matter gets hot, its particles gain kinetic energy. The increased kinetic energy pushes the particles farther apart. This causes the matter to expand.

Hence, option B is correct.

Learn more about kinetic energy here:

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Answer: See explanation

Explanation:

The International System of Units (SI), is also referred to as the metric system, and it is the standard for measurement internationally.

It should be noted that the The International System of Units (SI), originated from France. It is the system of measurement that is accepted officially worldwide. e.g. S.I unit for time is seconds.

Answer:

the rate of reaction would decrease

Explanation:

Answer:

its your opinion or something

Explanation:

its your own life so how does ot relate to yours?

Answer:

most living matter consists primarily of the so called bulk elements: oxygen, carbon, hydrogen, nitrogen, and sulfur the building blocks of the compounds that constitute our organs and muscles. These five elements also constitute the bulk of our diet; tens of grams per day are required for humans.

Explanation:

hope it helps :)

Answer:

(a).

(4 × C) + (8 × H)

= (4 × 12) + (8 × 1)

= 48+8

= 56 g

(b).

= (4 × C) + (6 × H)

= (4 × 12) + (6 × 1)

= ( 48+6 )

= 54 g

(c).

= ( 2 × Si ) + ( 4×Cl ) + (2×H)

= (2×28) + (4×35.5) + (2×1)

= 56 + 142 + 2

= 200 g

(d).

= (1×P) + (4×O) + (3×H)

= 31 + 64 + 3

= 98 g

Answer:

The answer is:

[tex]speed(\frac{m}{s}) \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (number)\\\\ 100 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 23 \\\\ 200 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 42 \\\\ 300 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 26 \\\\ 400 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 8 \\\\ 500 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ 1 \\\\[/tex]

Explanation:

Its total kinetic energy of a gas colloquial atom colloction is equal to absolute temperature alone, according to the programs that directly gas Theory.

Average speed for 1st option:

[tex]= \frac{(200 \times 23)+(400 \times 42)+(600 \times 26)+(800 \times 8) +1000}{100} \\\\= 444\ \frac{m}{s} \ \ \ \ \ \ \ \ \ \text{average speed of gas}[/tex]

 Average speed for 2nd option:

 [tex]= \frac{(200 \times 11) +(400 \times 21)+ (600 \times 13)+ (800 \times 4)}{11+21+13+4} \\\\= 440 \ \frac{m}{s}[/tex]

 Average speed for 3rd option:

[tex]= \frac{(200 \times 43) +(400 \times 50)+ (600 \times 7)}{100} \\\\ =328 \ \frac{m}{s}[/tex]

 Average speed for 4th option:

 [tex]= \frac{(200 \times 50) +(400 \times 25)+ (600 \times 13)+(800\times 8)+(1000 \times 4)}{100}\\\\ =382\ \frac{m}{s}[/tex]

  Average speed for 5th option:

[tex]= \frac{(100 \times 23) +(200 \times 42)+ (300 \times 26)+(400\times 8)+500}{100}\\\\ =222 \ \frac{m}{s}[/tex]

The average speed also increased by half because the temperatures had kinetic energy.[tex]\to 444 \ \frac{m}{s}\ to \ 222 \ \frac{m}{s}[/tex]

Answer:

A

Explanation:

In a hot car, the air molecules are heated, which cause them to speed up. The fast speed of these air molecules cause them to bounce off each other and the walls faster and harder, which will increase the pressure in the car.

We have that what happens inside a closed car on a hot day is

From the question we are told

What happens inside a closed car on a hot day?

A. The pressure inside the car increases.

B. The number of molecules increases.

C. The volume inside the car increases.

D. The molecules of gas slow down.

Generally

Inside a closed car on a hot day the volume inside a car increases.

the molecules of gas gets active with increase in kinetic energy of the molecules increases hitting the walls of the car and the sun also expands the metal walls of the car

Thereby increasing the pressure of molecules in the car

Inside a closed car on a hot day the volume inside a car increases.

Hence

What happens inside a closed car on a hot day is

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Answer:

6.02 x 10²³molecules

Explanation:

From the problem statement, we have been given the number of moles of the carbon dioxide to be 5.47°;

  Any number raised to the power of 0 is 1,

So,

 The number of carbon dioxide is 1

From mole concept;

    1 mole of any substance contains 6.02 x 10²³molecules

The number of molecules in the carbon dioxide is 6.02 x 10²³molecules

Answer:

E

Explanation:

The molecules A and B are shown in the image attached.

Intermolecular hydrogen bonding exists between hydrogen and an electronegative atom when the hydrogen is attached to a strongly electronegative atom. Hydrogen bonding is common in compounds such as HF, HCl, H20, CH3OH etc

Hydrogen bonding can occur between atoms 2 and 4 since they satisfy the conditions mentioned above. atom 3 can not participate in hydrogen bonding because the hydrogen is not attached to a highly electronegative element,

In this exercise we have to use the knowledge of chemistry to be able to describe the hydrogen bonds in the informed molecules:

We can say that the hydrogen bonds are all single in both molecules and we get in molecule A one bond and in molecule B six bonds.

Intermolecular hydrogen stick exists middle from two points hydrogen and an electronegative smallest part of something when the hydrogen is socially join to a strongly electronegative smallest part of something. Hydrogen fasten is generally known fashionable compounds such as HF, HCl, H20, CH3OH etc

Hydrogen fasten can occur middle from two points atoms 2 and 4 because they satisfy the environment noticed above. atom 3 can not take part in hydrogen fasten because the hydrogen exist not attached to a very electronegative essential feature.

See more about hydrogen bonds at brainly.com/question/4542860

Answer:

Exothermic reaction for the HCl, endothermic reaction for the water

[tex]2803.28\ \text{J}[/tex]

Explanation:

Heat was lost by HCl as its temperature lowered, so it was an exothermic reaction for the HCL.

Heat was gained by water as its temperature increased, so it was an endothermic reaction for the water.

m = Mass of water = 100 g

c = Specific heat of water = [tex]4184\ \text{J/kg}^{\circ}\text{C}[/tex]

[tex]\Delta T[/tex] = Change in temperature of water = [tex](31.3-24.6)^{\circ}\text{C}[/tex]

Heat is given by

[tex]Q=mc\Delta T\\ =0.1\times 4184\times (31.3-24.6)\\ =2803.28\ \text{J}[/tex]

Heat gained by water is [tex]2803.28\ \text{J}[/tex].