Answer:
or example, most samples of the elements hydrogen, oxygen, and nitrogen are composed of molecules that contain two atoms each (called diatomic molecules) and thus have the molecular formulas H2, O2, and N2, respectively. ... A molecule of sulfur is composed of eight sulfur atoms and is therefore written as S8.
does a fish's scales shred as the fish grows larger
Answer: No.
Explanation: Unless a disaster happens to their environment their scales will only grow.
Imagine that you skipped from one end of a room to the other end of the room. Explain how gravity affected your motion.
Answer:
when you skipped you jumped up but gravity pulls you to the ground when you jump
Explanation:
On skipping in a room, gravity affects the motion by pulling back to the ground.
Gravity has been defined as the force acting by the earth in the downward direction. It has been the strongest force and has been responsible for life on earth.
On skipping in a room from one end to another, there has been a force applied in the direction against gravity. The application of force has resulted in an upward motion. The gravitational force has been acting in the downward motion, and result in pulling back to the ground.
Thus, on skipping in a room, gravity influences the motion by pulling back to the ground.
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_____ is the element from which iron is taken.
Carbon
Quartz
Hematite
When a fluorine atom becomes an ion, it will
A) gain an electron and increase in size
B) lose an electron and increase in size
C) gain an electron and decrease in size
D) lose an electron and decrease in size
Answer:
A) gain an electron and increase in size
Explanation:
Fluorine is a Group 17 element, making it a halogen. This means that it has 7 valence electrons in its outer shell. It only needs one more electron to fill its outer shell and gain stability. When fluorine becomes an ion, it gains an electron and becomes F⁻. Adding electrons creates a larger ion because the electrons occupy a larger volume due to mutual repulsions pushing them apart.
Hope that helps.
When a fluorine atom becomes an anion, it will gain an electron and increase in size. Therefore, option (A) is correct.
What is an ion?An ion is a chemical specie that holds a positive or negative charge. The term ‘ion’ refers to atoms or molecules with non-zero net charges associated with them. Therefore, all ions have either a greater number of electrons than protons in their atomic structures or a greater number of protons than electrons.
If the number of protons is greater than electrons are termed to hold a net positive charge and are commonly referred to as cations. The ions that contain a greater number of electrons than protons hold a net negative charge and are known as anions.
The electronic configuration of the fluorine is 1s²2s²2p⁵. As the fluorine atom accepts one electron in its valence shell it becomes anion F⁻. The number of protons is less than electrons therefore effective nuclear charge decreases and the size of the ion increases.
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Which of the following molecules is most likely an enzyme?
water
glucose
protease
monosaccharide
Answer:
protease is an enzyme
Explanation:
It hydrolyse peptide bonds of proteins and also called proteolytic enzymes.
what is the magnitude of earthquake took place in manila?
A.5.2
B.5.3
C.5.4
D.5.5
Answer:
i believe its 5.2
Explanation:
Why is methanol more soluble in water than butanol
Answer:
Explanation: The longer the alkyl chain, the less soluble in water is the alcohol. Methanol and ethanol are infinitely miscible in water; propanol and butanol have limited solubility. ... Hydrogen bonding with water thus becomes less viable, and solubility of the long-chain alcohol IN WATER decreases.
Explanation:
Write the following in standard notation: 2.8 x 10-5s.
Answer:
2.8 X 10-5s in standard notation is 28-5s
Explanation:
Multiply 2.8 by 10
Question 3
True or False. You must convert grams to moles to do stoichiometry.
True
оо
D
False
Answer:
True
Explanation:
Sometimes you will need to convert from grams to moles, or moles to grams
Earths rocks change from one type to another over time die to various earth processes A- igneous rock B- cementation C- metamorphic rock D- rock cycle
Answer:
The rock cycle describes the processes through which the three main rock types (igneous metamorphic, and sedimentary) transform from one type into another.
5. Determine if each statement is true or false about forming a hypothesis:
a. It must be long.
b. It is an educated guess.
c. It is in if…then format.
d. It must be testable.
e. It must start with I think.
Answer:
A: false
B: true
C: false
D: true
E: false
Explanation:
it doesn't necessarily need to be long but if it needs to be an educated guess, it has to be testable because you need to know if your hypothesis is true or not and "it doesn't need to start with "I think ...", it is must better with "if I do this ..." .
How is agriculture depended on industries
Answer:
The interdependence of agriculture and industry helps the development of both the sectors. The most important aspect of this inter dependence is that the products of one serve as important inputs for the other. Growth of one sector, thus means ample supply of inputs for the other.
Explanation:
What is the molar mass of Ba3(PO4)2?
Answer:
601.93 g/molexplanation:Problem: The Ba3(PO4)2 (molar mass = 601.93 g/mol) precipitate that formed from a salt mixture has a mass of 0.667 g.
The molar mass of barium phosphate is 601.93 g/mol.
What is molar mass?Molar mass is defined as the mass of a compound divided by the number of moles which is the amount of substance .It is a bulk quantity and not a molecular property of a substance . They are mostly calculated by adding the atomic masses of constituent elements in a compound.
It is an average of many particles or molecules.Molar mass is an intensive property as it does not depend on size of the sample.It has units of kg/mol. Molar masses of elements is given by relative atomic mass of element whereas that of compounds is given by the sum of relative atomic mass multiplied by the molar mass constant.
They are never measured directly , they are measured from the standard atomic masses.
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i need help i hate multi selects. 100 points please let me know
Answer:
d would be both liquids and gasses
Explanation:
Answer:
A. Gases
B. Solids
C. Gases
D. liquids and solids
So basically all ur answers are right except D
Explanation:
Brainlist?
Can someone plz help? Thanks so much!
An atom that contains 6 protons 6 neutrons and 6 electrons has a mass of approximately
1) 12 u
2) 12 g
3) 18 u
4) 18 g
Answer:
12 grams
Explanation:
Electrons do not contribute to mass. The proper unit to use is G
I really am bad at chemistry
Answer:
A, 4,3,3,4
B, 3,2,2,3
C, 2,6,2,3
D, 1,2,1, 1
Which observation shows that a substance is malleable
(A) the substance breaks apart when stretched
(B) the substance shatters when hit with a hammer
(C) the substance flattens when hit with a hammer
(D) the substance can be stretched easily into wires
Answer:
B
Explanation:
Answer:
It is C: the substance flattens out when struck with a hammer
Explanation:
025 Aqueous barium chloride and aqueous potassium carbonate react to produce solid
barium carbonate and aqueous potassium chloride.
A25
I need the balanced chemical equation for this
The balanced equation
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)
Further explanationGiven
word equation
Required
Balanced equation
Solution
Convert to chemical equation :
Reaction
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + KCl(aq)
Give a coefficientaBaCl₂(aq)+ K₂CO₃(aq)--> bBaCO₃(s) + cKCl(aq)
Make an equationK, left = 2, right = c⇒c=2
C, left = 1, right = b⇒b=1
Ba, left = a, right = b⇒a=b⇒a=1
The equation becomes :
BaCl₂(aq)+ K₂CO₃(aq)--> BaCO₃(s) + 2KCl(aq)
what does group 16 (oxygen family) have in common
Answer: here is your answer
Explanation:
The oxygen family consists of the elements that make up group 16 on the periodic table: oxygen, sulfur, selenium, tellurium, and polonium. These elements all have six electrons in their outermost energy level, accounting for some common chemical properties among them.
Answer:
they all have 6 valence electrons
Explanation:
all elements in group 16 have 6 valence electrons
Between the green skinned lime and the yellow skinned lime, which of these are more acidic.
You put two pots of water on the stove to boil. Both pots are the same size and are on the same size burner at the same heat setting, and one pot has twice as much
water as the other. Which one will boil faster? Why do you think that is?
Answer:
The emptiest one.
Explanation:
The more water, the more heat molucules have to turn to boil.
Have a great day!
Hope I helped and it would be greatly appreciated if you could be considerate and give brainliest.
A balloon is filled with 10 liters of air at a pressure of 5 atm. What is the pressure of the balloon if the volume is changed to 20 liters
LOOK AT PICTURE PLEASEE
Answer:
Its B
Explanation:
Answer: The answer is sodium chloride.
Explanation: Since salt is the most dissolvable, sodium/substance, then that makes salt/sodium chloride, the easiest, to break down.
Two bungee jumpers with the same mass stand on two buildings. One stands on a building 100ft tall and the other a building that is 200ft tall. Which has more potential energy and why?
Bungee jumpers that stand on a 200 ft building
Further explanationGiven
A building 100 ft tall
A building 200ft tall
Required
Which has the greatest potential energy
Solution
Potential energy is owned by an object because of its height
Can be formulated :
PE = m . g . h
g = acceleration due to gravity ,(m/s²)
h = height , (m)
m = mass, (kg)
So PE is influenced by 3 factors:
the object's mass, its gravitational acceleration at that place and its height
Because the mass and gravitational acceleration are the same, the largest PE is owned by bungee jumpers that stand on a 200 ft building
pls help
20020200202
tell me what to do dudette
What is the formula for displacement? *
1- Final position minus initial position
2- Relation to a reference point plus distance travelled
3- Distance divided by time
4- Speed times vector
Answer:
2 i think i am not very good at this lol
Explanation:
The units that acceleration use are distance/time^2 (in metric units).
The acceleration is the change of velocity over time, so
In another way, if the velocity is constant, the acceleration is zero, but if the velocity change over the time (as a car do when the red light change), the acceleration takes value!.
What are the three main parts of an atom and what are their charges?
Where are the electrons found in an atom?
Answer:
Three main parts are Protons (pos charge) Neutrons (no charge) Electrons (negative charge) and the electron is found on the outside of the nucleus
Explanation:
How many moles in 13 grams of C 2 H6 ? show work
Answer:
0.43mole
Explanation:
Given parameters:
Mass of C₂H₆ = 13g
Unknown:
Number of moles = ?
Solution:
To solve this problem we need to first find the molar mass of the given compound.
Molar mass of C₂H₆ = 2(12) + 6(1) = 30g/mol
So;
Number of moles = [tex]\frac{mass}{molar mass}[/tex]
Number of moles = [tex]\frac{13}{30}[/tex] = 0.43mole
Over the past week, Anna has been very curt with shondra, and when she ask if she has done something to offend her, Anna tersely replies, "no, everything is fine" what should shondra do
Answer:
A. avoid talking to Anna altogether and stay out of her way
B. ask her manager for advice
C. check with Gary to see if there is any gossip about what's going on with Anna
D. take a curt approach of her own to show Anna how it feels
Explanation:
ANSWER: B.
What did Antoine Lavoisier’s experiments demonstrate?
A. Atoms always split into pairs during a chemical change.
B. Mass is neither lost nor gained during a chemical change.
C. Matter can be created during a chemical change.
D. Energy is neither lost nor gained during a chemical change.
