Answer: Mg2+
Explanation:
Why does hydrogen contain more energy than gasoline?
Answer:
In fact, a fuel cell coupled with an electric motor is two to three is more efficient than an internal combustion engine running on gasoline.
Explanation:
Because hydrogen has a low volumetric energy density, it is stored onbaord a vehicle as a compressed gas to achieve the driving range of conventional vehicles.
what type of mixture is formed when black iron filings and yellow sulfur powder black iron filing is formed
Homogeneous
Heterogeneous
Compound
Answer:
when you heat the blend, you form iron sulfide, a compound
Depending on the ratio, you could form Fe4S3 or fool's gold
Explanation:When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S. Therefore, heating of mixture of iron and sulphur powder is a chemical change forming a compoundf
what additional reaction product would result if naoh was used as a base in this reaction instead of k2co3?
Answer:
What reaction product would result if NaOH was used as a base in this reaction instead of K2CO3? If sodium hydroxide was used as the base of the reaction, then the reaction product formed would be an ethyl alcohol because it would undergo a hydrolysis reaction with addition of iodoethane
The entire carbonation reaction demonstrates how potassium carbonate (K2CO3) combines with water and carbon dioxide to create potassium bicarbonate (KHCO3) when exposed to combustion flue gases at low temperatures (40 to 80 °C) (Reaction 1)
What takes place when K2CO3 and water interact?In an extremely violent and exothermic reaction, potassium carbonate splits into potassium and carbonate ions when it interacts with water. When the ions interact, potassium oxide and carbonic acid are created.
K2CO3 come from : Potassium carbonate is a common ingredient in the manufacture of soap and glass. Additionally, it serves as a light drying agent. This substance is used as a buffering agent in numerous wine making procedures. Another usage for potassium carbonate is as a fire extinguisher.
K2CO3 created : Commercially, potassium carbonate is made by reacting potassium hydroxide with carbon dioxide:
2 KOH + CO2 = K2CO3 + H2.
K2CO332H2O sesquihydrate crystallizes from the solution ("potash hydrate").
The anhydrous salt is produced by heating this solid at 200 °C (392 °F).
It disintegrates into K2O+CO2 around 1200 C. (allreaction)
By converting carbonate into carbon dioxide and water, potassium carbonate can act as a base by forming potassium hydroxide.
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Which of the following would exhibit the lowest conductivity?
a. Mg
b. NaCl
c. CO(2)
d. MgCl(2)
Answer:
the correct answer is b. Co2...............
I will make you brainless answer this 1 question pleaaeeee!b
6) A 14.5 g sample of sodium chloride reacts with excess fluorine gas according to
the following chemical equation.
2 NaCl(s) + F2(g) → 2 NaF(s) + Cl2(g)
a. How many grams of sodium fluoride are produced?
b. How many grams of chlorine gas are produced?
The mass of chlorine gas produced by 14.5 grams of sodium chloride is 10.42 g.
The mass of chlorine gas produced by 14.5 grams of sodium chloride is 8.81 g.
The given parameters;
mass of the sodium chloride, = 14.5 g2NaCl(s) + F2(g) → 2NaF(s) + Cl2(g)In the reaction above, we can deduce the following;
molecular mass of 2Nacl = 2(58.44) = 116.88 g
molecular mass of 2NaF = 2(42) = 84 g
molecular mass of Cl2 = 71 g
The mass of sodium fluoride produced by 14.5 grams of sodium chloride is calculated as follows;
116.88 g of NaCl --------------- 84 g of NaF
14.5 g of NaCl ------------------- ?
[tex]= \frac{84 \times 14.5}{116.88} \\\\= 10.42 \ g[/tex]
The mass of chlorine gas produced by 14.5 grams of sodium chloride is calculated as follows;
116.88 g of NaCl --------------- 71 g of Cl2
14.5 g of NaCl ------------------- ?
[tex]= \frac{14.5 \times 71}{116.88} \\\\= 8.81 \ g[/tex]
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An atom will be neutral ONLY if
Answer:
They have the same number of charged protons and electrons, therefore balancing positive and negative charges. I hope this helps you.
Explanation:
Some substances like chalk, duster, paper, wood, air are not found in the periodic table. why?
Answer:
They are not pure elements, instead they are compounds, hence why they are not found on the periodic table. (Periodic table only consists of pure elements)
Which of the following changes the solid Earth the most?Metamorphic rocks are formed when sedimentary or igneous rocks are subjected to heat or pressure and recrystallize without melting. Which of the following rocks results from the metamorphism of limestone?
Answer:
The metamorphism of limestone results in the formation of marble
Explanation:
Explain why graphite conducts electricity.
Answer in terms of the structure and bonding in graphite.
Answer:
Diamond has a giant molecular structure. Each carbon atom is covalently bonded to four other carbon atoms. A lot of energy is needed to separate the atoms in diamond. This is because covalent bonds are strong, and diamond contains very many covalent bonds.
Graphite on the other hand has flat layers of carbon atoms held by weak van der Waal's forces which makes Graphite a weak object and easily breakable.
As graphite contains layers of carbon atoms. The layers slide over each other easily because there are only weak forces between them, making graphite slippery. These electrons can move through the graphite, carrying charge from place to place and allowing graphite to conduct electricity.One valence electron of each carbon atom remains free, Thus making graphite a good conductor of electricity. Whereas in diamond, they have no free mobile electron. Hence there won't be flow of electrons That is the reason behind diamond are bad conductor electricity.These electrons are free to move between the layers in graphite, so graphite can conduct electricity.The forces between the layers in graphite are weak. This means that the layers can slide over each other.
Bases react with carbon dioxide and from............. and water
Answer:
I believe the answer is B. Carbonates
Explanation:
what is the name of the following organic compound? ch3ch2ch2ch2ch2ch2ch2ch3
Answer:
Octane
Explanation:
What is CH3CH2CH2CH2CH2CH2CH2CH3?
Octane - CH3CH2CH2CH2CH2CH2CH2CH3.
You measure the amount of Oxygen released when Hydrogen peroxide is reacts with Sodium Hydroxide. You are measuring a ____Change
Chemical or physical change? No links please
how many different products are formed from the dehydrohalogenation of 2-bromobutane?
Answer:
3 1-butene, Z-2-butene, and E-2-butene.
Explanation:
Since 2-butene exists as two stereoisomers, three products are possible from the reaction of potassium ethoxide with 2-bromobutane. The products are, of course, 1-butene, Z-2-butene, and E-2-butene.
draw the skeletal structure of the alkyl halide that forms the following alkene as the only product in an elimination reaction. you do not need to show lone pairs.
The alkyl halide that forms the alkene shown as the only product in an elimination reaction is bromomethyl cyclohexane.
An elimination reaction is a reaction in which two atoms are removed to create a double bond. Elimination reaction is a type of reaction that is common to alkyl halides.
In this reaction, a hydrogen atom and a halogen atom are both removed to yield a double bond. The structure of the product depends on the structure of the reactant alkyl halide.
Bromomethylcyclohexane shown in the image attached yields the alkene product in the image attached as the only product when it undergoes elimination reaction.
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which alkyl halide reacts fastest with trimethylamine in sn2 reaction?
Structure V reacts fastest with trimethylamine in SN2 reaction. Owing to less steric crowding in the transition state and ease of cleavage of the R - I bond
The question is incomplete, the complete question is shown in the image attache to this answer.
SN2 reaction is a type of nucleophilic reaction in which the nucleophile attacks the substrate from the reverse side. This is a synchronous reaction because the leaving group departs as the entering group attacks simultaneously in a hypervalent transition state.
SN2 reaction is favored by structure V owing to less steric crowding in the transition state and the easy of cleavage of the R - I bond. Hence, structure V reacts fastest with trimethylamine in SN2 reaction.
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which scenario supports the ""one gene–one enzyme"" hypothesis of metabolic disease causation?
The scenario that supports the "one gene-one enzyme" hypothesis of metabolic disease causation is Phenylketonuria (PKU). This disease (PKU) is caused by the failure to produce a functional variant of an enzyme.
Phenylketonuria (PKU) is a metabolic inherited disorder associated with a decreased metabolism of the amino acid phenylalanine.
PKU is caused by a mutation in the gene responsible for encoding a key enzyme needed to break down phenylalanine.
Untreated PKU may lead to diverse health problems which include brain damage, intellectual disability, seizures, mental disorders, etc.
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Which of the following describes a chemical property of oxygen?
Oxygen is a gas at room temperature.
An oxygen molecule has an atomic mass of 32 a m u.
The density of oxygen is 0.00133 grams per centimeter cubed .
Oxygen reacts with iron to form rust.
Answer:
Oxygen Reacts with Iron to Form Rust is the Correct Answer
How much effort force would you use to lift a 300 kg weight with a fixed pulley system?
Answer:
It would take 150 kg to lift the load
Explanation:
PLSSS HELP MEEE ASAPA!!
Which pair of elements has reactivity that is similar to Fluorine, F?
Answer:
halogens group 7A on the periodic
table
Give example of 1 solid, 1 liquid and 1 gas solution.
Captionless Image
In which range of electronegativity differences would polar covalent bonds occur?(1 point)
−1.0 to 0
0 to 1.0
0 to 0.5
0.5 to 1
This image shows electronegativities of elements on the periodic table. Based on this information, which element is most likely to form a strong ionic bond and take on electrons? (1 point)
fluorine (F)
cesium (Cs)
hydrogen (H)
helium (He)
Which option contains an example of a polyatomic ion?(1 point)
NH4
KNO3
CaCl2
MgCl
Which statement best explains the difference between polar and nonpolar covalent bonds?(1 point)
Polar covalent bonds give/take electrons, while nonpolar covalent bonds share electrons.
Polar covalent bonds share electrons, while nonpolar covalent bonds give/take electrons.
Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.
Polar covalent bonds share electrons equally, while nonpolar covalent bonds share electrons unequally
Which statement describes the bonds in iron sulfate, FeSO4? (1 point)
Fe and S have an ionic bond, and S and O have ionic bonds, too.
Fe and S have a covalent bond, while S and O have ionic bonds.
Fe and S have an ionic bond, while S and O have covalent bonds..
Fe and S have a covalent bond, and S and O have covalent bonds, too.
Answer: 1. (0.5 to 1)
2. (Fluorine)
3. (KNO3
4. (Polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.)
5. (Fe and S have a covalent bond, and S and O have covalent bonds, too.)
Explanation:
Ye, have great day.
The periodic table is an arrangement of elements according to their periodic properties.
Polar covalent bonds are those compounds in which unsymmetrical electron distribution in bonds leads to polarity in the molecule. Examples of such compounds include; HCl, CHCl3, etc. A polar covalent bond occurs when the electronegativity differences between atoms lies within the range of 0.5 to 1.
Since electronegativity increases across the period and we also know that highly electropositive metals(having very low electronegativity) and highly electronegative nonmetals(having high electronegativity) form a strong ionic bond, it follows that fluorine (F) and cesium (Cs) will form a strong ionic bond.
A poly atomic ion is an ion that contains more than one atom. Given the options listed NH4^+ is an example of a polyatomic ion.
The difference between polar and nonpolar covalent bonds is that polar covalent bonds share electrons unequally, while nonpolar covalent bonds share electrons equally.
In FeSO4, Fe and S have an ionic bond, while S and O have covalent bonds.
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2. In what state are particles spread farthest apart?
A)solid
B)liquid
C)gas
3. How does thermal energy explain your answer to #2?
Answer:
In what state are particles spread farthest apart? Answer= Gas
How does thermal energy explain your answer to #2?
When something is hot and/or warm its moving fast like the steam u see on a cup of tea , it travels faster than any other state of matter.
Explanation:
hope i helped
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What happens to food molecules during cellular respiration?
They undergo chemical reactions with carbon dioxide, releasing stored energy.
They undergo reactions in which the atoms are destroyed to produce energy.
They undergo chemical reactions to produce large, complex molecules.
They undergo chemical reactions with oxygen, releasing stored energy.
Answer: They undergo chemical reactions with oxygen, releasing stored energy.
Explanation:
I took my k12 7th grade science unit test and got this question correct.
Have a good day and drink some water plz
The food molecules during cellular respiration they undergo chemical reactions with oxygen, releasing stored energy.
What is chemical reaction?Chemical reaction is defined as a procedure in which one or more substances, known as reactants, are converted into one or more different substances, known as products.
It can also be defined as a method of chemically transforming one set of chemical substances into another.
There are basically six types of chemical reaction.
Combustion reactionDecomposition reactionNeutralization reactionRedox reactionPrecipitation reactionSynthesis reactionCellular respiration is defined as the process of oxidizing biological fuels in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, which drives the bulk production of ATP.
It can also be defined as the process by which sugar from food is converted into energy within cells.
Thus, the food molecules during cellular respiration they undergo chemical reactions with oxygen, releasing stored energy.
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PLEASE HELP NEED ANSWER FAST
RATES OF WEATHERING LAB
Purpose:
The purpose of this lab report is to _______.
Question:
(What is the overall question you are trying to answer?)
Procedures:
(Here you will copy the lab directions over)
Data Tables:
Analysis and Conclusion:
In conclusion relative and absolute dating (or whatever your lab was about)…
Answer:
communicate the important work you have done in lab
Explanation:
Which element in the list is the most reactive?
C
Ba
S
Cs
Answer:
Cs
Explanation:
This element is the farthest right, and lowest meaning that the reactivity of it is very high.
1. valence electrons and electronegativity
2. Both reactivity and electronegativity decrease down a group.
3. Electronegativity decreases down a group, and reactivity increases down a group.
4. The number of valence electrons increases from left to right.
5. Cs
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Someone pls help me I will make you you brain
Answer:
A
Explanation:
it's Conventional Movement
pleaseeeeee helpppp???????
Answer:
Aluminum is highly reactive
Explanation:
Chemical property is defined as the property in which chemical composition of the substance changes.
For example, reactivity, oxidation state, inflammability etc are all chemical properties.
Therefore, we can conclude that out of the given options, Aluminum is highly reactive depict a chemical property of aluminum.
Distinguish the endothermic and exothermic energy changes associated with ionic bond formation, and relate it to stability
Answer:
When ionic compounds are formed, energy is released which is exothermic energy. If the energy released during bond formation is reabsorbed, the ionic bond holding the positive ions and negative ions together will break apart which is endothermic energy.
Explanation:
The formation of an ionic crystal lattice from its constituent ions is an exothermic process.
Endothermic changes are energy changes in which energy is absorbed while exothermic energy changes are those energy changes in which energy is evolved.
During the formation of an ionic bond, the metal looses electron(s). This is an endothermic process. The nonmetal accepts electrons. This is an exothermic process.
When the ionic crystal is formed, energy is given out because the energy of the lattice is less than the energy of the isolated ions. This heat change is exothermic.
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What Group is this Element in?
O Group 3
O Group 4
O Group 7
Group 1
Answer: group 7
Explanation:
