Answer:
Chemical change
Explanation:
There are types of changes in nature namely: physical change and chemical change. A physical change is a change that does not alter the chemical composition of the substances involved, hence, no new substances are formed. On the other hand, a chemical change changes the chemical composition of the involved substances to form new substances.
Based on the definition of the types of changes below, the equation depicted in this question is a CHEMICAL CHANGE because it involves a rearrangement of the atoms of each element in the reactants to produce new sets of products with a new chemical formula.
C17H17ON3(s) + 2C4H6O3(l) → C21H21O5N(s) + 2C2H4O2(l)
How cold is it on Uranus
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.
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if 3 mol of fe2o3 reacts with 5 mol al what is the maximum amount of fe that was produced. Explanation please!
Answer:
Queso es yummy. If you give me below 5 stars u like sucking on rocks.
Explanation:
what number repersents the subscript 5H2
In the following compound (HCl) How many electrons are gained and lost by each atom?
In the following compound (NaCl) How many electrons are gained and lost by each atom
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.
How many liters of solution would it take to make a 0.250 M solution when you have 3.52 moles of solute?
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.
___MgCl2(s) +___ MiCO3(s)
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.
Ba(CN)2
What is the name of the compound?
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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Write the name of CO
Answer:
cobalt
Explanation:
When making a cup of ramen with boiled water, which of the
following example is conduction?
a Stirring the soup to make it cooler
b Smelling the soup outside the kitchen
C Feeling heat from holding the cup
d The powdery soup dissolving in water
e The soup releasing hot steam
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 :)
Lunar phases include the waxing and waning phases. The waxing phases have light on the _______ side of the moon as we look at it from Earth *
A. Top
B. Left
C. Right
D. Bottom
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
what are the elements of the liquids in the periodic table?
Answer:
bromine,mercury ,caesium,gallium,rubidium and francium
Explanation:
Answer:
Mercury
Bromine
Caesium
Rubidium
Francium
Gallium
These all are liquid elements
Classify each chemical compound listed in the table below.
type of compound (check all that apply)
compound
ionic
molecular
acid
base
H, SO:
HI
KI
Nacioz
Help me plz!
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.
A 100.-gram sample of H2O(l) at 22.0°C absorbs 830. joules of heat. What will be the final temperature of the water?
Answer:23.976
Explanation:830j = 197.6 cal. 197.6/100g=1.976 degrees. plus 22 degrees =23.976
Rock whose texture, mineralogy, or chemical
composition has been altered without melting it.
Answer:
I believe it would be C or B
Why does the periodic table have the shape it has
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 number of protons in the nucleus of an atom determines its chemical properties. Elements with similar numbers of protons have similar chemical properties, so they are grouped together in the periodic table.The number of electron shells in an atom determines its size and its reactivity. Elements with the same number of electron shells have similar sizes and reactivities, so they are grouped together in the periodic table.The number of valence electrons in an atom determines its chemical bonding. Elements with the same number of valence electrons have similar chemical bonding properties, so they are grouped together in the periodic table.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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A teacher demonstrates a chemical reaction. A student
observes that the test tube in which the reaction occurs
becomes warm. What is the source of the thermal
energy generated by the reaction?
Select one:
A. potential energy absorbed by the reaction
B. breaking bonds of the reactants
C. kinetic energy absorbed by the reaction
D. energy stored in the reactants
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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Explain how steam causes burns by describing the transfer of heat.
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!!
Growing salt crystals from evaporated sea water is an example of a chemical reaction.
True
False
Answer:
false
Explanation:
This is not a chemical reaction.
State the numbers of protons, neutrons & electrons in an atom of Carbon-14
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!
what trend does the first ionization energy follow, going down the periodic table?
Answer:
going down the periodic table atomic size increases,electronegativity and ionization decreases going down
The melting point of a 100g piece of zinc metal is 419ºC. If the sample is cut in half, the melting point of each half would be 419ºC. True or False
Answer: true
Explanation: same as the melting point of a gram or a tonne
What percent of FeSO4 is Fe
Answer:
About 36%
Explanation:
Could someone please help me? You can ignore number 3:)
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.
what are oil and waters properties of matter?
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.
These are incorrect please put the right answer on the blanks\
for brainiest:)
Answer:
1. condensation
2. Temperature
3. evaporization
4. kinetic energy
5. sub limation
6. thermal energy
7. deposition
8. vaporization
What is the answer??
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:
I gave brainlest:: answer this .....
Mercury is a liquid at room temperature, gallium will melt if held in your hand, and aluminum is a solid that has a high melting point. All three are metals. How can you explain these observations using information about the strength of metallic bonds?
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.
What are 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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why ammonia is a identified as a weak base?
can you explain what it is meant by it only ionise partially?
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.
how do isotopes of an atom differ? how are they the same?
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: