Please help me with this homework

Answer:

Queso es yummy. If you give me below 5 stars u like sucking on rocks.

Explanation:

Answer:

C. Feeling the heat from holding the cup

Explanation:

Conduction is the process by which heat or electricity is directly transmitted through a substance to another substance that has different levels of heat or electricity.

Therefore, the only logical answer is C. Feeling heat from holding the cup.

This is because the heat from the cup is being directly transmitted to the hand of the person.

Hope this helps!!

- Kay :)

Answer:

Two other beneficial properties of the oil include the inhibition of corrosion of metal surfaces, such as steel, and the removal of dirt and detritus via detergency.

Properties of water include its chemical formula H2O, density, melting, boiling point & how one molecule of water has two hydrogen atoms covalently bonded to one oxygen atom.

Answer: The arrangement of electrons in atoms is responsible for the shape of the periodic table.

Explanation: Electron configurations can be predicted by the position of an atom on the periodic table.

                  O_O                               O_O                              O_O

                                        Add me as a freind!!! <3

The periodic table has the shape it has because the elements are arranged according to their atomic number, which is the number of protons in the nucleus of an atom.

The chemical elements are arranged in a periodic table in ascending order of atomic number, allowing one to observe trends in the elements' properties.

Here are some of the reasons why the periodic table has the shape it has:

The periodic table is a valuable tool for understanding the chemical properties of the elements.

Therefore, above mentioned are some of the reasons why periodic table has the shape it has.

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Answer:23.976

Explanation:830j = 197.6 cal. 197.6/100g=1.976 degrees. plus 22 degrees =23.976

Answer:

Please find attached the table of classification of the chemical compounds, created with Microsoft Word

Explanation:

The given compounds are;

H₂SO₃ is an acid which is known as sulfurous acid

When SO₂ is added to water, we have;

SO₂ + H₂O ⇄ HSO₃ + H⁺

Therefore, H₂SO₃ is ionic

2) HI which is known as hydrogen iodide, dissolves in water as follows

HI (g) + H₂O (l)  ⇄ H₃O⁺(aq) + I⁻(aq)

Therefore, HI is able to donate hydrogen ions therefore, it is both acidic and ionic

3) KI is a salt of the alkali metal, potassium, and iodine which is a group 7 element such that it formed by the transfer of electrons from potassium to iodine making it an ionic compound

KI forms a slightly alkaline solution

4) NaClO₃ comprises of the ionic combination of sodium and chlorate ions which dissolves in water as follows;

NaClO₃ → Na⁺(aq) + ClO₃⁻(aq)

Therefore, NaClO₃ is ionic

NaClO₃ is also a strong oxidizing agent, making a Br∅nsted acid

we have;  

Sulfurous acid (also Sulfuric(IV) acid, Sulphuric acid (UK), Sulphuric(IV) acid (UK)) is the chemical compound with the formula H2SO3. There is no evidence that sulfurous acid exists in solution, but the molecule has been detected in the gas phase.[1] The conjugate bases of this elusive acid are, however, common anions, bisulfite (or hydrogen sulfite) and sulfite.

Answer:

3 you use elements instead of numbers and arrows instead of equal signs

actually it would be more like word problems you have 4 apples plus 3 oranges yields 7 apple orange things but it doesn't yield 7 of them it would be an equal ratio of moles of the fruits

4 the arrow is an equal sign

Explanation:

Answer:

2 and 5

Explanation:

Answer:

Question 2: Because the elements could be unstable, forming elemental compounds.

Question 1: Water is made up of Hydrogen and oxygen, which is namely called H2^o What makes it a pure substance is the little mass and molecules it's made up of.

Answer:

MgCl2 (s) + Li2CO3 (s) ==> MgCO3 (s) + 2LiCl (aq)

Double Replacement

Explanation:

MgCl2 (s) + Li2CO3 (s) ==> MgCO3 (s) + 2LiCl (aq)

Double Replacement

Halogens are Soluble

Carbonates are Insoluble

This reaction DOES take place.

Answer:

false

Explanation:

This is not a chemical reaction.

Answer:

It will be : (in simple terms)

Condensation of hot steam or hot vapor on the cooler skin releases the water's latent heat of vaporization, rapidly raising the temperature of the skin which will result in steam burns.

Hope it helped

All the best!!

Explanation:

In HCL, one positive atom is given to chlorine from hydrogen so that it can complete it's octate. chlorine take one electron from hydrogen.

In NaCl, Sodium takes one electron from chlorine to complete its orbit with eight electrons. Chlorine gives one electron to sodium.

Answer:

I believe it would be C or B

Answer:

Neutral carbon-14 contains six protons, eight neutrons, and six electrons; its mass number is 14 (six protons plus eight neutrons). These two alternate forms of carbon are isotopes.

I hope it's helpful!

Answer: true

Explanation: same as the melting point of a gram or a tonne

Answer:

going down the periodic table atomic size increases,electronegativity and ionization decreases going down

Answer:

Explanation:

The light is on the right side of the moon from Earth's perspective. The light will never be on the bottom or top. Its either waxing or waning; left or right

Answer:

Barium cyanide

Explanation:

I don't no

The name of the compound Ba(CN)₂ is called barium cyanide.

The compound Ba(CN)₂ is called barium cyanide. It is a white crystalline solid that is soluble in water. Barium cyanide is a toxic compound and can be fatal if ingested. It is used in electroplating and other metallurgical processes.

The name of the compound is derived from the names of the elements that make up the compound. Barium is named after the Latin word for "heavy", and cyanide is named after the Greek word for "blue". The -ide suffix indicates that the compound is an ionic compound, with barium as the cation and cyanide as the anion.

The chemical formula for barium cyanide can be written in a few different ways. The most common way is to write it as Ba(CN)₂. This formula shows that there is one barium atom for every two cyanide atoms. The formula can also be written as BaCN₂, but this is less common.

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Answer: B, breaking bonds of the reactant.

Explanation:

This reaction is taking in energy and we know this because it says it 'becomes warm'.

Endothermic reactions take in heat/energy from the surroundings and bond breaking occurs during an endothermic reaction.

B. breaking bonds of the reactants which emits heat energy.

The test tube in which the reaction occur is warm because the heat energy is released due to the making of new bonds. When the new bonds are formed, energy is released in the form of heat.

Energy is needed to break bonds so it absorbed the bonds so we can say that bond-breaking is an endothermic process while on the other hand, energy is released when new bonds form so we can say that bond-making is an exothermic process.

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Answer:

About 36%

Explanation:

Answer:

bromine,mercury ,caesium,gallium,rubidium and francium

Explanation:

Answer:

Mercury

Bromine

Caesium

Rubidium

Francium

Gallium

These all are liquid elements

Answer:

3) Some fibres are called synthetic because they are not made from natural fibres. Instead, they are made by chemical processing of petrochemicals. The synthetic fibres are made up of very large units called polymers. Some of the synthetic fibres are - nylon, rayon, acrylon

4) is used for making parachutes, rock climbing ropes, fishing nets, seat belts. A nylon thread is actually stronger than steel wire.

5) for the following reasons:

1. Plastic containers do not react with food

2. Plastic containers are light weight so they are easy to handle.

3. The price of plastic containers is very less as compared to other containers.

4. They have strong strength.

5.. Plastic containers are durable

6) (thermosetting plastic)  have primary bonds between molecular chains and held together by strong cross-links

(Thermoplastics)  have secondary bonds between molecular chains

Answer:

-371 degrees f

Explanation:

-371 degrees F.

speeds on Uranus range from 90 to 360 mph and the planet's average temperature is a frigid -353 degrees F. The coldest temperature found in Uranus' lower atmosphere so far is -371 degrees F., which rivals Neptune's frigid temperatures.

(hope this helps can i plz have brainlist :D hehe)

Answer:

The volume of solution in liters required to make a 0.250 M solution from 3.52 moles of solute is 14.08 liters of solution

Explanation:

The question relates to the definition of the concentration of a solution which is the number of moles per liter (1 liter = 1 dm³) of solution

Therefore we have;

The concentration of the intended solution = 0.250 M

Therefore, the number of moles per liter of the required resolution = 0.250 moles

Therefore, the concentration of the required solution = 0.250 moles/liter

The volume in liters of the required solution that will have 3.52 moles of the solute is given as follows;

The required volume of solution = The number of moles of the solute/(The concentration of the solution)

∴ The required volume of solution = 3.52 moles/(0.250 moles/liter) = 14.08 liters

The required volume of solution to make a 0.250 M solution from 3.52 moles of solute = 14.08 liters.

Therefore the number of liters required to make a 0.250 M solution from 3.52 moles of solute = 14.08 liters.

Answer:

the solid is so hard

Explanation:

yan na po sana makatulong po heheheh

Metals such as Gallium and mercury are different from that of other metals like aluminium because they are liquid at room temperature. This is because of valence electrons which are relatively free in these metals.

All the metals except mercury and gallium are solids at room temperature. These metals are liquids because of both the high electrical conductivity and the thermal conductivity which come from the fact that one or more valence electrons is relatively free in these atoms to travel throughout the solid metal. This has been formalized in the Wiedemann-Franz law.

Both Gallium and mercury are unique elements (metals) which occur in the liquid state at near the room temperature. It is important here to note that mercury is essentially a liquid at room temperature while gallium becomes liquid at temperature near to room temperature. They both melt very easily due to the low melting temperature values.

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Answer:

1. condensation

2. Temperature

3. evaporization

4. kinetic energy

5. sub limation

6. thermal energy

7. deposition

8. vaporization

Answer:

Ammonia doesn't contain any hydroxide ions to begin, but it's dissolved in water acquires hydrogen ion from the water to produce hydroxide as well as ammonium ions. However ammonia doesn't fully convert into hydroxide and ammonium ions in solution that's why ammonia is a weak base.