Objects can be charged when electrons move from one object to another by direct contact 1.Charging by conduction (contact) 2.Charging by conduction (contact), , 3.Charging by friction 4.Static electricity charging by induction

Answer: car b

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.

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- Kay :)

Answer:

cobalt

Explanation:

Answer:

Math like Science is Math combined with the calculations and all that stuff so

Explanation:

Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)

Answer:

the child would have a 1 in 2 chances of having a dominant gene

Explanation:

Parent 1         Parent 2

d                     d

r                       r

child

d

d= dominant

r= recessive

Answer:

Because it is made up of different minerals which are chemically combined.

Explanation:

Answer: true

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

Answer:

About 36%

Explanation:

Answer:

false

Explanation:

This is not a chemical reaction.

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.

Explanation:

Entropy refers to the degree of disorderliness of system. Basically it refers to how random a system is.

Gong through the options.

A. The phase change is from solid to liquid. Liquid has a greater degree of disorderliness compared to solid hence entropy is increasing.

B. The phase change is from solid to gas. Gas particles has a greater degree of disorderliness compared to solid hence entropy is increasing.

C. The phase change is from aqueous to liquid. Aqueous solutions has a greater degree of disorderliness compared to liquid hence entropy is decreasing.

D. The reactant side has; solid + gas. In the product side, there is only gas. The product side has a greater degree of disorderliness hence the entropy is increasing.

E. The entropy of the product is greater than the entropy of the reactants hence entropy is increasing.

F.  The phase change is from aqueous to solid. Aqueous solutions has a greater degree of disorderliness compared to solid hence entropy is decreasing.

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.

Answer:

Answer:

I hope I can help you

Explanation:

I hope I can help you

Answer: Isotopes of an atom are different because they have different atomic masses and different number of neutrons within their nucleus. They are the same since they will always have the same atomic number/number of protons in their nucleus.

Explanation:

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:

24.7 C

Explanation:

I don't know how

The final temperature of 1000 ml water by the addition of 5 g ammonium perchlorate has been 24.7 degree Celsius.

With the addition of 5 g of ammonium perchlorate, the drop in temperature has been:

The addition of 5 g sample to 100 ml water has absorption of energy, that results in change in temperature of 3 degree Celsius.

The heat absorbed by sample has been given as:

Heat = mass × specific heat × change in temperature

Since, the same mass of sample has been added to 25 degree Celsius water, according to law of conservation, the change in density for both the changes has been equivalent.

The ratio of masses has been equivalent to the ratio of volume.

[tex]\rm \dfrac{Mass\;at\;1000\;ml}{Mass\;at\;100\;ml}\;=\;\dfrac{Volume\;at\;1000\;ml}{Volume\;at\;100\;ml}\\\\\\\dfrac{Mass\;at\;1000\;ml}{Mass\;at\;100\;ml}\;=\;\dfrac{1000\,ml}{100\;ml}\\\\\\\dfrac{Mass\;at\;1000\;ml}{Mass\;at\;100\;ml}\;=\;10[/tex]

Since, the mass at 100 ml and mass at 1000 ml has been equal, the heat absorbed by the sample has also been equal. Equating the values:

Mass at 100 ml × Specific heat × Change in temperature = Mass at 1000 ml × Specific heat × Change in temperature

[tex]\rm 3\;degree\;Celsius\;= \;\dfrac{Mass\;at\;1000\;ml}{Mass\;at\;100\;ml}\;\times\;Change\;in\;temperature\\\\3\;degree\;Celsius\;= \;10\;\times\;Change\;in\;temperature\\\\Change\;in\;temperature\;=\;\dfrac{3}{10}[/tex]

Change in temperature =  0.3 degree Celsius.

The initial temperature of water has been 25 degree Celsius. The change in temperature has been given by:

Change in temperature = Initial temperature - Final temperature

0.3 degree Celsius = 25 degree Celsius - Final temperature

Final temperature = 25 - 03 degree Celsius

Final temperature = 24.7 degree Celsius.

The final temperature of 1000 ml water by the addition of 5 g ammonium perchlorate has been 24.7 degree Celsius.

For more information about the final temperature, refer to the link:

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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.

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All the best!!

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:

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:

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.

To know more about compound here

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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: Only the nervous and endocrine systems are involved in maintaining homeostasis.

Explanation: Hope this helped you

D. Only the nervous and endocrine systems are involved in maintaining homeostasis.

For more information:

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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:

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:

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.

0.34 mol S

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

11 g S

Step 2: Identify Conversions

[PT] Molar Mass of S - 32.07 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

0.343 mol S ≈ 0.34 mol S

Answer:

tell me how you want

this done?

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:

The answer is (c) Zn(No3)2

Explanation:

Because we know the cation of zinc is+2 and whereas nitrate is anion, -1.