Given the formula of a compound

What is the molecular formula for this compound?
1.
CH
2.
CH2
3.
CH3
4.
C₃H6

Answer:

Explanation:

21

Answer:

Is there supposed to be a picture??

Explanation:

Answer:

See explanation and image attached

Explanation:

We were told that one of two different oxidizing agents were used H2CrO4 and H2SO4 or PCC/CH2Cl2.

Now, we must know that when we use H2CrO4 and H2SO4, primary alcohols are converted to aldehydes and then to carboxylic acids while secondary alcohols are converted to ketones.

When we use PCC/CH2Cl2 primary alcohols are converted to aldehydes and does not move further to convert to carboxylic acids while secondary alcohols are converted to ketones.

Recall that tertiary alcohols are not oxidized at all.

Answer:

The other technique which used to separate the coffee or tea is Filtration.

Filtration is a physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass.

Solid particles that cannot pass through the filter medium are described as oversize and the fluid that passes through is called the filtrate.

Answer:

the number of moles of ethanol is 18 g sample is 0.390 mol

Explanation:

The computation of the  number of moles of ethanol is 18 g sample is shown below:

= Mass of ethanol sample ÷ molar mass of ethanol

= 18 g ÷ 46.064=84 g

= 0.390 mol

Hence, the number of moles of ethanol is 18 g sample is 0.390 mol

Answer:

0.71 g/mL

The liquid is diethylamine

Explanation:

Mass of the liquid = 1.23 kg of 1.23 * 10^3 g

Volume of the liquid = 1737.cm3

Let us remember that density is obtained as;

Density= mass/volume

Density= 1.23 * 10^3 g/1737cm^3

Density= 0.71 g/cm^3

Since we know that 1 mL=1 cm3 . So, 1 g/mL=1 g/cm3

So we can also write;

Density= 0.71 g/mL

The liquid is diethylamine

Answer:

5.88 dL = 0.588 litre

Explanation:

We need to find a conversion from 5.88 dL to liters.

We know that the conversion is as follows :

1 deciliter = 0.1 litre

To find 5.88 dL to liters, we use the unitary method. So,

5.88 dL= (0.1×5.88) litre

5.88 dL = 0.588 litre

So, there are 0.588 liters in 5.88 dL.

Answer:

the answer is heterotrophs

During burning, elements in the coal are  converted to compounds called oxides.

An oxide is a compound formed by combination of an element with oxygen. Usually, when an element is burnt in oxygen, it combines with oxygen in the presence of heat to form oxides.

Coal contains carbon, nitrogen and sulfur. When coal is burnt, these elements combine with oxygen to form oxides. The products of combustion of coal are oxides of sulfur, oxides of carbon and oxides of nitrogen.

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Answer:

Confederation
☆

EDGE2022; Good Luck :3!!!!

Answer:

47 L will be the volume STP

Explanation:

Atomic number is denoted by 'Z' which is the atomic number of an element and Z=13 for aluminium , the atomic number of aluminium.

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

Aluminium has 13 protons and thus it's atomic number that is 'Z' is equal to 13.

Thus, 'Z' which is the atomic number of an element and Z=13 for aluminium  ,the atomic number of aluminium.

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Answer:

b

Explanation:

Answer: A I believe

Explanation:

Answer:

See explanation and image attached

Explanation:

Esterification is a reaction of an alkanol and an alkanoic acid to yield an ester and water as products. It is analogous to inorganic neutralization reaction.

The process may be acid catalyzed. As mentioned in the question, the process of ester formation between pentanoic acid and n‑propanol first involves the carbonyl in going through an sp3 hybridized intermediate before returning to sp2 hybridized state in the product.

The image of the neutral form of this intermediate as well as the final structure of the ester are both shown in the image attached to this answer.

Answer:

Explanation:

Copernicus proposed that the Earth is not the center of the solar system, and that the Sun is the center. It's called heliocentric. He wrote a book summarizing all his ideas called De Revolutionbus. The Copernican Revolution though, is when a majority of the people started taking his ideas seriously and a major shift happened in what people think about the solar system.

Answer:the discovery that the earth revolves around the sun

Explanation:

Answer:

c

Explanation:

C represents C. Rock formed by heat and pressure.

Metamorphic rocks are often squished, smeared out, and folded. regardless of those uncomfortable conditions, metamorphic rocks do not get warm sufficient to melt, or they would end up igneous rocks! common Metamorphic Rocks: common metamorphic rocks include phyllite, schist, gneiss, quartzite, and marble.

Metamorphic rock is any of a class of rocks that result from the alteration of preexisting rocks in reaction to changing environmental situations, such as variations in temperature, strain, and mechanical stress, and the addition or subtraction of chemical components.

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Answer:

sorry don't know the answer but i really need the points sorry

Explanation:

Answer:

The starting position of this object is 3 m.

The object is traveling at a velocity of 3 m/s

Explanation:

the graph begins at 3, and increases by 3 at each second

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Answer:

the answer is Covalent compounds separate into neutral molecules when they dissolve in water.

Explanation: covalent doesn’t conduct electricity in water

The common salt transforms the distilled water into an electrical conductor. But sugar molecule is a covalent compound which dissolve in water. So the white sugar does not show any conductivity.

The electrical conductors are defined as the materials which allow electricity to flow through them easily. The property of conductors which allow them to conduct electricity is defined as the conductivity. The metals are good conductors of electricity.

The distilled water does not contain any contaminants and it is incapable of conducting even very minute amount of electricity. But during the addition of ordinary salt or sodium chloride to the distilled water, it becomes electrically conductible.

The presence of chlorine and sodium ions makes the distilled water to conduct electricity. Here sugar is a covalent compound which separate into neutral molecules when they dissolve in water. So covalent compounds does not conduct electricity.

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Answer and Explanation:

a. fluorine ⇒ atomic element

Fluorine (F) is a chemical element because it is a pure substance that cannot be decomposed into simpler substances.

b. N₂O ⇒ molecular compound

We can see that N₂O (nitrous oxide) is a molecule composed by two different atomic elements: nitrogen (N) and oxygen (O). Thus, it is a molecular compound.

c. silver ⇒ atomic element

Silver is a chemical element with the symbol Ag. It is a pure substance which cannot be decomposed into simpler substances.

d. K₂O ⇒ ionic compound

Potassium oxide (K₂O) is composed by a metallic element (potassium, K) and a non-metallic element (O). Thus, there is a difference in the electronegativity of the chemical elements, so the substance can dissociate into ions. In consequence, it is an ionic compound.

e. Fe₂O₃ ⇒ molecular compound (with ionic character)

Iron(III) oxide (Fe₂O₃) is composed by iron element (Fe), which is a metal, and oxygen element (O), which is a non-metal. Since it is a Metal- Non-Metal combination, it would be an ionic compound. The difference in electronegativity between Fe and O is not high (<2.0) in comparison with other ionic compounds, so Fe₂O₃ is considered as a polar covalent compound (it is between an ionic compound and a molecular compound).

Answer:

ExpC

H

4

+  

2

O

2

→

C

O

2

+  

2

H

2

O

This is the balanced reaction equation for the combustion of methane.

Explanation:

The Law of Conservation of Mass basically states that matter can neither be created nor destroyed. As such, we must be able to show this in our chemical reaction equations.

If you look at the equation above, you'll see an arrow that separates the reaction equation into two parts. This represents the direction of the reaction.

To the left of the arrow, we have our reactants.

To the right of the arrow, we have our products.

The quantity of each individual element in the left must equal the quantity of each individual element in the right.

So if you look below, you'll see the unbalanced equation, and I'll try to explain how to balance the reaction.

C

H

4

+  

O

2

→

C

O

2

+  

H

2

O

Our reactants in this equation are  

C

H

4

and  

O

2

.

Our next step is to break these down into individual atoms.

We have:

1 C atom, 4 H atoms & 2 O atoms.

If you're confused by this, look to see the little number to the bottom right of each element, the subscript, and it tells you how many of each atom are in the molecule. Make sense?

Now we look to the other side of the equation.

Here we see our products are  

C

O

2

+  

H

2

O

Again, we break these down into individual atoms again.

We have:

1 C atom, 2 H atom, 3 O atom

Answer:

CeO₂

Explanation:

Hello!

In this case, since we are given the mass of both cerium and the cerium oxide, we can first compute the moles of cerium and the moles of oxygen as shown below:

[tex]n_{Ce}=4.2gCe*\frac{1molCe}{140.12gCe}=0.03molCe\\[/tex]

[tex]m_O=5.16g-4.2g=0.96gO\\\\n_O=0.96g*\frac{1molO}{16.0gO} =0.06molO[/tex]

Now, we simply divide each moles by 0.03 as the fewest moles in the formula to obtain the simplest formula (empirical formula) of this oxide:

[tex]Ce=\frac{0.03}{0.03}=1\\\\O =\frac{0.06}{0.03}=2[/tex]

Thus, the formula turns out:

[tex]CeO_2[/tex]

Regards!

Answer:

Anions. Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions.

Explanation:

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Answer:

Yes, biomass is a renewable energy source

Explanation:

Biomass—renewable energy from plants and animals

Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. Renewable resources are replenished naturally and over relatively short periods of time.

Answer:

Explanation:

Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies while renewable resources are replenished naturally and over relatively short periods of time. Yes, Biomass is renewable organic material that comes from plants and animals.

Answer:

The stigma.

Explanation:

You're welcome. :)

Answer:

6.5

Explanation:

half of 5 is 2.5, half of 8 is 4. 2.5+4=6.5

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