Answer:
1 ) Electrovalent compounds are formed by the complete transfer of electrons while covalent compounds are formed by sharing of electrons between 2 atoms.
2) Electrovalent compounds are more soluble in polar solvents like water while covalent compounds are more soluble in non-polar solvents like methane.
How much chlorine is required to synthesize with the 100g of sodium to make table salt?
Explanation:
[tex]Na + Cl→Na Cl [/tex]
23 g of Sodium react with 35.5 g of Chlorine.
100g of Sodium will react with :
[tex]( \frac{100}{23} \times 35.5) \: grams \: of \: chlorine[/tex]
How many moles of aluminum oxide are produced by reacting 54 g of aluminum with oxygen gas?
4Al(s) + 30 2(g) → 24/203(s)
A) 1.0 mol
B) 3.0 mol
C) 4.0 mol
D) 2.0 mol
Q1 - How would you balance the following equation: N₂ + O₂ N₂O₅
A: N₂ + 5 O₂ N₂O₅
B: 2 N₂ + 5 O₂ 2 N₂O₅
C: N₂ + 5 O₂ N₂2O₅
D: N₂ + O₂ N₂O₅ (already balanced)
Q2 - In the reaction, HCl + NaOH NaCl + H₂O, what is/are the reactant(s)?
A: HCl only
B: HCl and NaOH
C: NaCl only
D: HCl and NaCl
nswer:
For Q1 its B!
Explanation:
cuz I'm smart dw.
What is the main difference between weathering and erosion?
Answer:
Erosion occurs when smaller rock fragments (now pebbles, sand, or soil) are displaced by natural forces. Weathering occurs as a rock is altered or destroyed but remains in place. The displacement of weathered rock fragments is referred to as erosion.
Explanation
1. Which of the following elements have atoms with a full shell of
valence electrons (1 point)
a. Lithium
b. Oxygen
c. Hydrogen
d. Neon
Answer:
The answer is neon.
Explanation:
Hope this helped Mark BRAINLEST!!!
Which is a general property of cell membranes? a) Membranes contain more lipid than protein. b) Membrane proteins have a polar head and a non-polar tail. c) Membrane lipids are amphipathic. d) Membranes contain covalent bonds between fatty acids
Answer:
c) Membrane lipids are amphipathic.
Explanation:
A cell can be defined as the structural, fundamental, biological and functional unit of life. Cells are found in all living organisms because they are the basic unit of life.
In a cell, the "workers" that perform various functions or tasks for the survival of the living organism are referred to as organelles. Some examples of cell organelles found in all living organisms such as trees, birds, and bacteria include; nucleus, mitochondria, lysosomes, ribosomes, chromosomes, endoplasmic reticulum, cytoskeleton, vesicles, golgi apparatus, and cell membrane.
Cell membrane is the wall of a cell and typically controls what leaves and enters the cell.
A general property of cell membranes is that membrane lipids are amphipathic. All the lipid molecules found in the cell membrane are amphipathic or amphiphilic, which means that they are "water loving" (hydrophilic) with a polar end or "water fearing" (hydrophobic) with non-polar end. Thus, membrane lipids have an end that's soluble in water (polar) while the other end is soluble in fat (non-polar).
The membrane lipids are amphipathic.
• In the majority of cell membranes in animals, lipids, that is, fatty molecules forms about 50 percent of the mass of the cell.
• All the molecules of lipid in a cell membrane are amphipathic, that is, they possess a polar end or hydrophilic and non-polar end or hydrophobic end.
• The phospholipids are the most abundant lipids found in the cell membrane.
• They have a polar head group and two hydrophobic hydrocarbon tails.
• It is the amphipathic nature and shape of the molecules of lipids, which makes them to produce bilayers spontaneously.
Thus, correct answer is option c, that is, membrane lipids are amphipathic.
To know more about:
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does carbon dissolve in water
Answer:
yes
Explanation:
CO2 is soluble because water molecules are attracted to these polar areas. The bond between carbon
how many molecules are there in 18.5 moles of water
Answer: The answer is 18.01528.
Explanation:
Give an example of a decomposer, and explain what would happen if decomposers were absent from a forest ecosystem. Provide evidence to support your claim and explain your reasoning
Answer: Bacteria, some insects, and fungal species are the decomposers of the dead and decaying matter.
Explanation:
The decomposers are the organisms which act and feed on the dead and decaying organic matter so as to obtain energy from it and degrade it to the simple forms that can be utilized by the plants. Bacteria, some insects and fungi that live in the soil and on the decaying matter. The fungi for example decay on the lignin present in the wood so helps in wood decomposition of trees. If the decomposer like fungi are absent the wood mass will not decompose and it will remain as waste and can be used by the plants in the form of nutrients.
Phenotype is the organism's physical appearance while
is the organism's genetic make-up for any given
trait,
Genotype
Gender
OOOO
Genome
Genetic file
Using household measuring tools use these conversions to record is a capacity of the bottle milliliters 1 cup equals 240 mL in 1 tablespoon equals 50 mL 1 teaspoon equals 5 mL what is the capacity of the bottle milliliters?
Answer:
500 ml is in a water bottle
Explanation:
Will made a cup of hot tea and placed it on the tableA few minutes later, he picked up the cup and touched the warm table where the cup had been sitting put the cup back in the same place and left the kitchenWhen he returned a few hours later , he noticed the table and the cup felt the same temperature as other Which of these statements best describes the heat flow between the cup and the table?
A The heat flowed from the table to the cup through the process of convection
B The heat flowed from the table to the cup through the process of conduction
C.The heat flowed from the cup to the table through the process of conduction.
D. The heat flowed from the cup to the table through the process of convection
why do atoms become anions and cations
Answer:
Cations (positively-charged ions) and anions (negatively-charged ions) are formed when a metal loses electrons, and a nonmetal gains those electrons. ... And all of them form an anion with a single negative charge. The VIA elements gain two electrons to form anions with a 2- charge.
Explanation: OR
Metallic atoms hold some of their electrons relatively loosely. Consequently, they tend to lose electrons and form cations. Conversely, most nonmetallic atoms attract electrons more strongly than metallic atoms, and so gain electrons to form anions.
Metallic atoms hold some of their electrons relatively loosely. Consequently, they tend to lose electrons and form cations. Conversely, most nonmetallic atoms attract electrons more strongly than metallic atoms, and so gain › cat...
_
Answer:
It gains one or more electrons from another atom to become negatively charged.
Explanation:
An atom becomes charged by either gaining or losing electrons, and is called an ion. An atom with less than the normal number of electrons is a positive ion (a cation), and an atom with one or more extra electrons is a negative ion (an anion).
As a change of state takes place, heat and
temperature
HELP!
How many kernel electrons are in Na+1??
Answer:
So, sodium's 11 electrons are arranged this way: 2 electrons in the first "shell", 8 electrons in the second "shell"; and 1 electron (the valence electron) in the third "shell".
Please don't flag!!!!
Hope this helps!!!
Have a great day!!!! :)
Would you expect to find older or newer fossils in rock layers closer to the surface? Why?
Answer:
Newer
Explanation:
older fossils and rocks are found in lower strata than younger fossils and rock layers because the top layer fossils have not been there as long as the bottom layer fossils to be found deeper in the ground
Which of these is NOT a way to express probability?
A .1 in 4
B. 50 percent
c. 3/4
D. 25
Answer:
Option A.
Explanation:
Probability is expressed in percent, fraction or in whole numbers
The only one that does not express a probability is 25.
A one in four chance, a fifty percent chance, a three in four chance. These all could be probabilities.
25 doesn't express a probability.
If this is incorrect, please, don't refrain to tell me.
Thirty (30.0) milliliters of ethane (C2H6) occupy a container at STP. If the container is heated to 300.0 K and the pressure reduced to 75.0 kPa, what is the new volume?
Answer:
44.6millilitres
Explanation:
Using the general gas law equation as follows:
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (atm)
V1 = initial volume (L)
T1 = initial temperature (K)
P2 = final pressure (atm)
V2 = final volume (L)
T2 = final temperature (K)
According to this question;
V1 = 30mL
T1 = 273K (STP)
P1 = 1 atm (STP)
V2 = ?
T2 = 300K
P2 = 75.0 kPa = 75 × 0.00987 = 0.74atm
Using P1V1/T1 = P2V2/T2
1 × 30/273 = 0.74×V2/300
30/273 = 0.74V2/300
Cross multiply
300 × 30 = 273 × 0.74V2
9000 = 202.02V2
V2 = 9000/202.02
V2 = 44.55
V2 = 44.6millilitres.
i have extra points so giving points out to people who can answer these questions
HAS TO BE CORRECT
doing addison next
ill ask in comments who wants brainliest <3
1. what is charli d'amelio's favorite food
2.what is charli d'amelio's favorite color
3. how long has charli d'amelio been dancing for??
99 points
heres a rare from charli luvs
Answer:
Dunkin' Donuts
Purple
Charli began dancing at age 3, and was a trained competitive dancer for over 10 years prior to starting TikTok.
Explanation:
Answer:
pink
Explanation:
A 75.0-milliliter lightbulb is filled with neon, Theie are 7.16 10 4 moles ol gas In it, and the absolute pressure Is 116.8
kilopascals after the bulb has been on for an hour. How hot did the bulb get?
The temperature of the lightbulb was
K.
Answer:
Answer:- 1467 K
Solution:- It asks to calculate the kelvin temperature of the light bulb. Looking at the given info, it is based on ideal gas law equation, PV=nRT.
Answer:
1470 K
Explanation:
Rounded to 3 significant figures.
Name three examples of how the atom has changed since Rutherford's discovery of the nucleus .
Answer:
Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment, in which he demonstrated that the atom has a tiny, high- mass nucleus. In his experiment, Rutherford observed that many alpha particles were deflected at small angles while others were reflected back to the alpha source.
kinetic energy is the energy of ____ things
Answer:
moving things
Explanation:
kinetic energy is the energy of moving things
PLEASE I WILL BRAINLIST YOU
1. A student predicted the reaction between hydrogen and oxygen gas would yield 125 mL of water. However, after measuring the water formed in the reaction, the student determined that only 110 mL of water was actually formed. Determine the percent yield for this reaction.
A. 75%
B. 88%
C. 100%
D. 113%
HINT: 96 yield= (actual yield/ expected yield ) X 100%
Answer:
B. 88%
Explanation:
percent yield is the actual yield divided by the theoretical (predicted) yield, then multiplied by 100 to get a percentage.
110/125 = 0.88
0.88 x 100 = 88%
In chemistry, the term yield also known as the reaction yield represents the measure of the quantity of the moles of a product formed in the reaction to the reactant used. The correct option is B.
What is percent yield?The amount of the product actually made compared with the maximum calculated yield is defined as the percent yield. It can also be known as the ratio of the actual yield to the theoretical yield.
The ideal quantity of the product is called the theoretical yield and it is obtained by working a stoichiometry problem. The actual amount of the product formed gives us the actual yield.
The equation of the percent yield is given as:
%yield = Actual yield / Theoretical yield × 100
110 / 125 × 100 = 0.88 × 100 = 88%
Therefore the percent yield of the reaction is 88%.
Thus the correct option is B.
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The sample of oxygen which represents the greatest mass is
A.) mole
B.) gram
C.) molecule
D.) liter
Answer:
A
Explanation:
A sorry if not correct
A. The potential energy of the products is greater than the potential energy of the reactants
B. The potential energy at point A represents the activation energy
C.The potential energy of the products is lower than the potential energy of the reactants
D. The potential energy at point C represents the activation energy
Answer: im pretty sure it is b but a is also good i going to be honest it a multi chose and i ant good at those
Explanation:
ok so im pretty sure im not writing the right thing in sooo if someone could give at least one or 2 answers, please that would be nice :)
Convert 9.5 x 10^23
What is the term for the amount of space occupied by an object?
A.
density
ОВ.
mass
OC.
volume
OD. weight
Answer: Volume
Explanation:
Cos Milky said it. Milky smart.
HIIII ! any k-pop & K-drama stans!? REMEMBER TO THINK POSITIVE & EAT 3 MEALS A DAY, READ A BOOK (ANY BOOK, SHORT OR LONG) REMEMBER TO SHOWER & DRINK LOTS OF WATER! REMEMBER TO LOVE YOURSELF FIRST ! ❤️ you did a great job today & I hope you keep on continue doing great just like today!!
Answer:
You know, i always say no but when i watch one i get addicted so... yeah. thanks for the positive messages
Explanation:
Thank you so much for spreading a postive message.
I dont know who needs to here this and I don't know you but I know life is hard. I know that no one gets it. I know you may feel depressed or stressed or not know who you are. I know that school is really hard right now. I know that you may have suicidal thoughts. I know because I've been there and still am but im getting better everyday. Progress is Perfect. I am always here to talk about it or anything you need.
Disproportionation is a process in which a substance
can act only as a reducing agent.
can act only as an oxidizing agent.
is both an oxidizing and a reducing agent.
is neither an oxidizing nor a reducing agent.
Answer:
C. is both an oxidizing and a reducing agent.
Explanation: