Answer:
0.075 moles n=m/M so divide the mass (m) by the molar mass (M) to get the n which is the number of moles
Explanation:
HELP ASAP PLEASE!!!!
Answer:
solid objects
cooler to warmer
sitting on a metal chair.
Explanation:
im correcr
Based on Avogadro's principle, the coefficients in chemical equations involving only gases represent two types of quantities. Name the two quantities.
Answer:
subject
Chemistry, 08.04.2020 04:39 dnprops1544
Based on Avogadro's principle, the coefficients in chemical equations involving only gases
represent two types of quantities. Name the two quantities.
Explanation:
Answer: Molar ratio is the quantity which will correctly convert between two different substances.
Answer: Option B
Explanation:
Molar ratio is used to determine the number of moles of reactants required to convert to desired number of moles of the products and vice versa. As moles are the coefficient written in any chemical equation. The ratio of the number of moles of the reactants to the number of moles of the products will help to determine the molar ratio.
This molar ratio is used as the conversion factor to determine number of moles required in the reactant side for the reactants to form a desired product of desired moles. We can also determine the number of moles utilized from the reactants from the moles obtained in the products using this molar ratio conversion factor.
What hold elements together to form compounds
Answer:
Chemical bonds are forces that hold elements together. it can be either covalent or ionic bonds that are these chemical bonds.
What is the correct formula for the compound formed by Mg and F?
MgF
Mg2F
Mg2+F
MgF2
Look at picture
ASAP please will mark as brainlist don’t got much time
Magnesium phosphate
Find Similar Structures
Molecular Formula
Mg3(PO4)2 or Mg3O8P2
Synonyms
magnesium phosphate
More...
Molecular Weight
262.86 g/mol
6.022 x 10^23 atoms of calcium.
What is the mass?
Answer:
(6.02214179×1023) / one mole of substance. How many atoms are in a 3.0 g sample of sodium (Na)?
Explanation:
Answer:
Explanation:
Mass is 1.000
Does the atomic number of an element equal the number of neutrons in an atom of that element?
Answer:
no
Explanation:
the atomic number the just the number below the symbol of the element as well as proton number or electron number, however if u want to work out the neutron number you have do mass number (which is on the top of the symbol) substact atomic number/proton number
Where does nearly all life get its energy from? *
Oxygen
A.Sun
B.Produce
C.Soil
When the Hubble Space Telescope was first launched, it was the most advanced technology of its kind. Astronomers and astrophysicists all over the world celebrated its launch. Why was this event so important to these scientists?
1. Hubble provided a new way to study Earth's atmosphere.
2. Hubble proved that we could launch a telescope into space.
3. Hubble provided scientists with data about the Universe they had previously been unable to collect.
4. Hubble was able to collect physical samples from celestial bodies they had previously been unable to reach.
please help me
Answer:
C
Explanation:
its correct
''Hubble provided scientists with data about the Universe they had previously been unable to collect.'' is the right statement.
Benefits of Hubble Space TelescopeHubble Space Telescope helps the scientists to collect more data about the Universe which they had previously been unable to collect due to lower range of telescope.
This telescope has longer range and can see distant objects very clearly in the space so we can conclude that ''Hubble provided scientists with data about the Universe they had previously been unable to collect.'' is the correct statement.
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Compare and contrast the Ionization energies of groups 1&2 (Alkali and Alkaline metals) with the Ionization energies of groups 16&17 (Oxygen family and Halogens)
Answer:
Ionization energy is the energy required to remove an electron from a specific atom. It is measured in kJ/mol, which is an energy unit, much like calories. The ionization energies associated with some elements are described in the Table 1. For any given atom, the outermost valence electrons will have lower ionization energies than the inner-shell kernel electrons. As more electrons are added to a nucleus, the outer electrons become shielded from the nucleus by the inner shell electrons. This is called electron shielding .
Explanation:
a little summary
Ionization energy refers to the amount of energy needed to remove an electron from an atom.
Ionization energy decreases as we go down a group.
Ionization energy increases from left to right across the periodic table.
What two things will you consistently do to maintain your mental health?
Answer:
Eat healthy food and exercise daily also undertake good healthcare
There are some special exercises that help to increase brain strength you can do them
What is acetic acid (CH3COOH)
Answer:
Acetic acid (CH3COOH), also called ethanoic acid, the most important of the carboxylic acids. A dilute (approximately 5 percent by volume) solution of acetic acid produced by fermentation and oxidation of natural carbohydrates is called vinegar; a salt, ester, or acylal of acetic acid is called acetate.
Answer:
the acid that gives vinegar its characteristic taste. The pure acid is a colourless viscous liquid or glassy solid.
Explanation:
HOPE IT HELPS YOU......
What is the molecular formula of a compound with an empirical formula P2O5 and a gram-molecular mass of 284 grams? And why?
A tall plant (Tt) is crossed with a short plant (tt). What is the phenotype of the offspring?
Group of answer choices
100%
75% tall; 25% short
25% tall; 75% short
50% tall, 50% short
(03.03 LC)
Which of the following describes a covalent bond?
Answer:
It is the sharing of electrons between atoms with an electronegativity difference below 1.7.
Explanation: Covalent bond is the bond which is formed with the sharing of the electrons between the two atoms which are taking part in the bond.
Answer: Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.
Explanation: A covalent bond forms when the bonded atoms have a lower total energy than that of widely separated atoms.
What can you infer is causing the cryosphere to change? Give two reasons. Explain why.
Answer:The crayosphere- it is the portion of the Earth's surface where water is in solid form for at least one month of the year..-has been shrinking in response to climate warming.The important outcome,however,is the change and the response the human social system (infrastructure,food ,water,recreation) will be have to that change...
I hope It helps
Answer:
50
Explanation:
mookie betts 50 is goated no cap
Which statements describe the motion of the object represented by the graph? Select three options.
The object is moving away from the origin.
The object is moving towards the origin.
The object started at the origin.
The object started at 2 meters.
The object is traveling at a constant velocity.
Answer:
The object is moving away from the origin
The object started at 2 meters
The object is traveling at a constant velocity
Explanation:
Statements which best describe motion of object represented by graph are statement A,D and E.
What is motion?Motion is defined as a phenomenon which is described with respect to change in object's position with respect to time.It is given in terms of displacement,velocity,distance ,acceleration,speed.
Branch of physics which deals with motion of objects without any reference to it's cause is called kinematics while the branch which studies forces and their effects on motion is called as dynamics.
Motion applies to various systems like objects,bodies, matter particles ,radiation ,curvature.There are three laws of motion which are proposed by Newton.Classical mechanics is based on Newton's law of motion.Relativistic mechanics is based on modern kinematics.
Learn more about motion,here:
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Identify which is the result of a physical rather than
a chemical change?
Answer:
b
Explanation:
Story that ends in i have never found such a kind person ever since
Answer:
I was traveling on a train where I fell asleep. someone stole my luggage in which I had money and other essentials. when the ticket checker arrived a lady paid my fine. she helped me a lot. when I told her about being robbed she helped me and took me to the police station and I found my bag. I insisted she take the money she paid for my fine but she said that in return you too help someone."I have never found such a kind person ever since.".....
Explanation: I think this is what you are looking for. Hope this helps.
I am the life cycle that contains tiny undeveloped plants,
but I still have enough food for growth. Who am I?
Please help PLEASE
Work = Force X Distance A dog pulls a ball with 5N of force for 4 m. How
much work did the dog do?*
Answer:
W = 20 J
Explanation:
Given that,
The force acting on the dog, F = 5 N
Distance covered, d = 4 m
We need to find the work done by the dog. The work done by an object is given by :
W = Fd
Put all the values,
W = 5 N × 4 m
W = 20 J
So, 20 J of work is done by the dog.
pls help me!!!!
A.Ants and tarantulas
B.Rats and Snakes
C.Cacti and Sagebrush
D.Hawks and Coyotes
Answer:
C since both are plants which are the producers
Answer:
Cacti and Sage Brush
Explanation:
because they are plants so they produce food on their own
Which element has 5 energy levels and 2 valence electrons?
Answer:
Element 38: Strontium
Explanation:
When two clear substance combines, an insoluble solid is formed that settle downs as a
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When two clear substance combines, an insoluble solid is formed that settle downs as a ________.
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When two clear substance combines, an insoluble solid is formed that settle downs as a precipitate.
→A precipitate is a substance to be deposited in solid form from a solution.
______________________________________
Vacuum-packaging food is an effective means for stopping the growth of bacteria.
true or false
Answer:
True
Explanation:
Vacuum packing is a method of packaging that removes air from the package before sealing. ... On a more short-term basis, vacuum packing can also be used to store fresh foods, such as vegetables, meats, and liquids, because it inhibits bacterial growth. Vacuum packing greatly reduces the bulk of non-food items.
Beryllium oxide is heated.
What is the chemical reaction equation?
Answer:
BeO
Reaction of beryllium with air
However, powdered beryllium metal does burn in air to give a mixture of white beryllium oxide, BeO, and beryllium nitride, Be3N2. Beryllium oxide is more normally made by heating beryllium carbonate. 2Be(s) + O2(g) → 2BeO(s)
Which process is responsible for changing the composition of rock?
erosion
abrasion
chemical weathering
mechanical weathering
Answer:
chemical weathering
Explanation:
Chemical weathering is the process responsible for changing the composition of rocks.
WHAT IS WEATHERING?Weathering is the process by which rocks are broken down into smaller or tiny pieces.
There are different types of weathering namely;
Chemical weatheringMechanical weatheringChemical weathering is the type of weathering that changes the chemical composition of rocks.
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define the term valency
Answer:
Valency is the combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with
A exothermic reaction requires energy, produces energy, is energy-neutral.
Answer:
An exothermic reaction is going to produce energy.
Explanation:
rAn exothermic reaction is going to release energy meaning that your ending product will be negative. However if it is an endothermic reaction, it is going to absorb energy/requires energy, and will have an ending product that is positive.
Which of the following reactions is single replacement?
Describe two patterns in the periodic table?
Answer:
Patter 1: Ionization Energy Decreases going down a group
Pattern 2: Ions tend to gain/lose the least amount of electrons
Take oxygen, for example. Oxygen has 8 electrons. To become like a noble gas it could either gain two to become like neon or it could lose six to become like helium. So what will oxygen do—gain two or lose six? As a general rule, atoms will gain or lose the fewest number of electrons possible.
Explanation: