Does chocolate milk come from brown cows?

Answer:

-232 °C

Explanation:

We can use the Ideal Gas Law and solve for T.

pV = nRT

Data:  

m = 20.0 g

p = 6.0 atm

V = 0.40 L

R = 0.082 06 L·atm·K⁻¹mol⁻¹

Calculations:

1. Moles of N₂

2. Temperature of N₂

3. Convert the temperature to Celsius

T = (41.0 - 273.15) °C = -232 °C

Answer:

There will be produced 66g of CO2 if 45g of glucose completely reacted with oxygen

Explanation:

Step 1 : Balance the formula

Oxidation of glucose can be shown in the following equation :

C6H12O6  + 6 O2  → 6 CO2 + 6H2O

This means that for 1 mole glucose that react there will react 6 moles of O2, to form 6 moles of CO2 and 6 moles of H2O

Step 2: Calculating moles

mole glucose = 45g / Molar mass glucose

   ⇒ Molar mass = 6*12 + 12*1 + 6*16 = 72 + 12 + 96 = 180g/mole

⇒ mole glucose = 45g / 180g/mole

⇒mole glucose = 0.25 mole

Since 1 mole of glucose is used to form 6 moles of CO2

0.25 mole of glucose is used to form 1.5 moles of CO2

Step 3 : Calculating mass of Carbon dioxide

Mass of CO2 = 1.5 moles of CO2 * 44 g/mole

mass of CO2 = 66g

There will be produced 66g of CO2 if 45g of glucose completely reacted with oxygen

Final answer:

If 45g of glucose reacts with oxygen, 66.015 grams of carbon dioxide would be produced. This calculation is based on converting the mass of glucose to moles, using the stoichiometry of the balanced chemical equation, and then calculating the mass of CO2 produced.

Explanation:

When glucose (which has the chemical formula C6H12O6) is consumed, it reacts with oxygen to produce carbon dioxide, water, and energy. The chemical equation for this reaction is C6H12O6 + 6 O2 → 6 CO2 + 6 H2O. Given that 45g of C6H12O6 completely reacts with oxygen, we need to calculate the mass of carbon dioxide produced from this reaction.

To do this, we first need to determine the molar mass of glucose, which is 180.16 g/mol. This means that 1 mole of glucose weighs 180.16 grams. We can then find out how many moles of glucose 45g represents by dividing 45g by 180.16 g/mol, which gives us 0.25 mol of glucose.

According to the chemical equation, 1 mole of glucose produces 6 moles of CO2. Therefore, 0.25 moles of glucose would produce 0.25 × 6 = 1.5 moles of CO2. The molar mass of CO2 is 44.01 g/mol, so the mass of CO2 produced by 0.25 moles of glucose is 1.5 moles × 44.01 g/mol, resulting in 66.015 grams of CO2. So, if 45g of C6H12O6 completely reacted with oxygen, 66.015 grams of CO2 would be produced.

Answer:

Two Covalent Bonds

Chemistry Concepts:

• The Periodic Table is a table illustrating the periodic system, in which the chemical elements, formerly arranged in the order of their atomic weights and now according to their atomic numbers, are shown in related groups.
• Oxygen is a colorless, odorless, gaseous element constituting about one-fifth of the volume of the atmosphere and present in a combined state in nature. It is the supporter of combustion in the air and was the standard of atomic, combining, and molecular weight until 1961, when carbon 12 became the new standard.  
• Atoms are the basic units of matter, they are formed by a nucleus of protons and neutrons and electrons.
• Covalent bonds are the bonds formed by the sharing of a pair of electrons by two atoms.

Oxygen, which is in group 6 or 16 of the periodic table, has 6 valence electrons. To achieve a full outer shell of 8 electrons, oxygen needs to gain 2 electrons or share two electrons by forming covalent bonds. Therefore, oxygen typically forms two covalent bonds with other atoms to complete its outer shell and achieve a stable electron configuration.

What happens to the valence electrons of the other atom when oxygen forms a covalent bond with it?

When oxygen forms a covalent bond with another atom, it shares one or more pairs of electrons with that atom. The shared electrons are called bonding electrons, and they are shared between the oxygen atom and the other atom. The valence electrons of the other atom also participate in the covalent bond and are shared between the two atoms.

The electrons that are not involved in bonding, known as non-bonding or lone pair electrons, remain on the oxygen atom. These electrons are still part of the valence shell of the oxygen atom and are involved in its chemical properties, but they do not participate in the covalent bond with the other atom.

Furthermore, when oxygen forms a covalent bond with another atom, both atoms share electrons, including valence electrons, to achieve a more stable electron configuration.

Learn more about Covalent Bonds:

brainly.com/question/3447218

Oxygen is in group 6 of the periodic table. In general, oxygen tends to form two covalent bonds with other atoms.

To understand why oxygen forms two covalent bonds, let's look at its electron configuration. Oxygen has 8 electrons, with 2 in its innermost shell and 6 in its outermost shell. The outermost shell can hold a maximum of 8 electrons, so oxygen needs to gain 2 more electrons to have a full outer shell.

In a covalent bond, atoms share electrons to achieve a stable electron configuration. Oxygen can share two electrons with other atoms to complete its outer shell. This means that oxygen typically forms two covalent bonds, with each bond involving the sharing of two electrons.

For example, in a molecule of water (H2O), oxygen forms two covalent bonds with two hydrogen atoms. Each bond involves the sharing of one electron from each hydrogen atom and one electron from oxygen. This sharing of electrons allows all atoms involved to have a full outer shell, making the molecule stable.

It's important to note that there can be exceptions to this general rule. In some cases, oxygen can form more than two covalent bonds, such as in molecules like ozone (O3) or sulfur dioxide (SO2). However, these cases involve different bonding arrangements and are not as common as the formation of two covalent bonds.

2ZnS(s)+3O2(g) -> 2Zns(s) + 2SO3(g)

the above given equation is unbalanced as it contains 4 moles of sulphur in the output but in the input there are only two aoms of sulphur so to balance the equation we will write the equation as given under

balanced equation is

2ZnS(s)+3O2(g) -> 2Zn(s) + 2SO3(g)

In words:

When 2 moles of solid zinc sulfide reacts with 3 moles of oxygen gas gives 2 moles of solid zinc  and 2 moles of sulphur trioxide gas.

Answer:

D. insufficient supply of oxygen

Explanation:

Combustion is an exothermic reaction which involves the burning of a compound in the presence of oxygen. Combustion is a very useful life process as it produces heat and light.

For a complete combustion reaction to occur, the compound must be burnt over excess oxygen. The product is usually carbondioxide and water with release of some particulate matter.

In incomplete combustion, there is deficiency of oxygen. Here, oxygen becomes the limiting agent and it drives the reaction to an end. Incomplete combustion is always accompanied with the production of poisonous carbon monoxide and Carbon. We see incomplete combustion when smoke forms or when burning is accompanied by production of soot.

What makes a combustive process complete or not is the availability of oxygen gas for the reaction.