10. How many molecules are contained in 5.6 L of H2 at STP?

At STP 1mol of gas weighs 22.4L

Moles of chlorine

Now

Moles of AlCl_3

Mass of AlCl_3

Unsaturated organic compounds with a carbon-to-carbon double bond and alkynes with a carbon-to-carbon triple bond, as well as aldehydes and ketones with a carbon-to-oxygen double bond, undergo addition reactions.

Answer:

the narrator means that before the universe was out forward to completion,

there were little things that came together to form other things

a typical example can be found in the big bang theory

Answer:The narrator is pointing out that energy is involved in every event, and each event can be described in terms of energy.

Explanation:

Answer:

3 examples are beetles, a fly, and bees. Others include ants lady bugs and butterflies

Explanation:

The volume occupied by 10 moles of hydrogen gas at 145K and 705 Torr is 128.01L.

The volume of a gas can be calculated using ideal gas law equation as follows:

PV = nRT

Where;

0.93 × V = 10 × 0.0821 × 145

0.93V = 119.05

V = 128.01L

Therefore, the volume occupied by 10 moles of hydrogen gas at 145K and 705 Torr is 128.01L.

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Answer:

The balanced equation is: H2 (g) +Cl2 (g) →2HCl (g)

Explanation:

Balancing chemical equation refers to balancing the stoichiometric coefficients on the reactants and products side. This must be done as the chemical equation obeys the law of conservation of mass and momentum.

The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of atoms of all the molecules is equal on both sides of the equation is known as a balanced chemical equation. The Law of conservation of mass governs the balancing of a chemical equation.

Given chemical equation

The balanced chemical equation for the hydrogen + chlorine -> Hydrogen Chloride.

H2 + Cl2 → 2HCl

The equation is balanced as on the reactants side there are two hydrogens present and the same on the products side. For chlorine as well the same thing goes two chlorine atoms on the reactants side and two on the products side.

so 68 + 83 is 182 easy done

Answer:

≈32°C

Explanation:

1) the rule:

[tex]\frac{pV}{T}=const;[/tex]

2) according to the rule above the final temperature can be calculated as:

[tex]t_{final}=\frac{p_{init}}{p_{final}}*t_{init}; \ = > \ t_{final}=\frac{100}{300}*95=32.[/tex]

According to the Gay-Lussac's law, as volume is constant the temperature must be decreased to 31.6°C.

Gay-Lussac's law is defined as a gas law which states that the pressure which is exerted by the gas directly varies with its temperature and at a constant volume.The law was proposed by Joseph Gay-Lussac in the year 1808.

The pressure of the gas at constant volume reduces constantly as it is cooled till it undergoes condensation .The law is given by the formula, V₁/T₁=V₂/T₂, which on substitution gives T₂=95×100/300=31.6 °C.The container in Gay-Lussac's law is considered to be rigid  in contrast to the container present in Charle's law.

Thus, as per  Gay-Lussac's law, as volume is constant the temperature must be decreased to 31.6°C.

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Answer:

[tex]2.55 \times {10}^{24} [/tex]

atoms

Answer:

2.54kpa

Explanation:

p*v/t = constant

6.58/539=p2/2111

p2=211(6.50/539)

Answer:

2.53kpa

Explanation:

p1*v1/t1 = constant

the constant can be changed to p2*v2/t2

v2 can be removed from equation as it is constant

Answer:

Vinyl chloride is an organochloride with the formula H2C=CHCl that is also called vinyl chloride monomer (VCM) or chloroethene. This colorless compound is an important industrial chemical chiefly used to produce the polymer polyvinyl chloride (PVC).

Explanation:

Answer:

CH2=CHCl

Explanation:

1. a. 3

b. 2

2. a. 4

b. 6

3. a. 1

b. 2

4. a. 5

If 2500 grams of H2SO4 react with excess NH3 according to the illustration, the amount of ammonium sulfate that can be produced would be 3,370.92 grams. If only 3100 grams of ammonium sulfate were produced, the percentage yield would be 91.96%.

From the equation of the reaction:

2NH3(aq) + H2SO4(aq) → (NH4)2SO4(aq)

The mole ratio of H2SO4 and (NH4)2SO4 is 1:1

Mole of 2500 grams H2SO4 = 2500/98 = 25.51 moles

Equivalent mole of (NH4)2SO4 = 25.51 moles

Mass of 25.51 moles (NH4)2SO4 = 25.51 x 132.14 = 3,370.92 grams

If 3100 g of (NH4)2SO4 were actually produced, the percentage yield would be:

Percent yield = 3100/3370.92 x 100 = 91.96%

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Answer:

types of elements nacl MGS

behavior shared between atoms tranferred from one to another

properties high melting poin low melting point

example SI-o metal + non metal

example H-H only non metal elements

Explanation:

Answer:

Partial pressure of carbon dioxide is high in the pulmonary capillaries.

Explanation:

The biome which comprises most of Antarctica is the cold desert or polar desert.

This is defined as an area which is classified according to the species that live there.

The climate of Antarctica is very cold  with very little life forms which is why it is referred to as a cold desert or polar desert.

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In a chemical reaction, bonds between atoms in the reactants are broken and the atoms rearrange and form new bonds to make the products.

The atoms get rearranged into new substances.

Answer:

Sift the mixture to separate the rock from the iron filings, soil and salt.

You can then use a magnet to separate the iron filings from the salt and soil.

Afterwards, you can pour water into the remaining salt- soil mixture. Salt will dissolve but the soil will remain at the bottom of the water.

If you want to separate the salt from the water, you can boil it till all the water evaporates. The only thing that'd be left in the pan is salt.

Answer:

Grasshoppers are a good source of unsaturated fats and they can lower risk of diseases.

Explanation:

Answer:

Carbon Dioxide is not affected by sunlight. But the radiation changes direction when it hits a carbon dioxide molecule

Explanation:

Answer:

23936.5 N/m² or 23936.5 Pa

Explanation:

Unit conversion

Our dimensions

Solving

Answer:

Below

Explanation:

1. Sodium Bromide

2. Potassium Chloride

3. Magnesium Oxide

4. Calcium Fluoride

5. Barium Sulfide

6. Lithium Oxide

7. Sodium Fluoride

8. Cesium Nitride

Answer:

The Symbol Of Sodium Peroxide Is Na2O2

Answer:

Na2O2

Explanation:

Answer:

Middlesbrough, North Yorkshire

,,Explanation:

Answer: 1.36 atm

Explanation:

Answer:

Atomic number shows u the amount of protons there are in the atom

The protons are equal to the number of electrons

The group number tells  you  the number of electrons on the outer shell

(Sorry if u didn’t want the extra info but really it’s simple like magnesium has 12 so it has 12 protons/ 12 electrons)

Answer:

To calculate the numbers of subatomic particles in an atom, use its atomic  number and mass number:

1. number of protons = atomic number.

2. number of electrons = atomic number.

3.number of neutrons = mass number - atomic number.

Answer:

69.271837183727718371

Mg + HCl → MgCl_2 + H_2

(─.─||）

Answer:

Magnesium + hydrochloric acid → Magnesium chloride + hydrogen gas

Explanation:

acid + reactive metal (magnesium) → salt + hydrogen gas