The annswer are -
1. the center of an atom is a nucleus
2. protons and neutrons
3. electrons circle the nucleus and have a negative charge
4. the number of electrons
5. the number of protons
7. a molecule that is formed from two or more different types of atoms.
What is the explanation for these?1. The nucleus is at the center of every atom and contains protons and neutrons, while electrons orbit around the nucleus.
2. Protons and neutrons make up the nucleus of an atom, providing mass and stability.
3. Electrons circle the nucleus in specific energy levels and have a negative charge, playing a role in chemical bonding and interactions.
4. The number of protons in an atom is equal to its atomic number and determines the element it belongs to.
5. The number of protons in an atom specifically determines the type of element it represents.
7. A compound is a molecule formed from different types of atoms, combining chemically to create a new substance.
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Please help me!!!!!!!!!!!!!!
How many oxygen atoms are there in 5 molecules of Al2(SO4)?
Answer:
There are two aluminum ions and three sulfate ions; or two aluminum, three sulfur, and twelve oxygen atoms.
Explanation:
In 5 molecules of Al₂( SO₄ ) there are 20 oxygen atoms are present. In one molecule of aluminum sulphate there are 4 oxygen atoms present and in 5 molecules of Al₂( SO₄ ) 20 oxygen atoms present.
What is molecule ?According to the environment, the word may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms bound together by the attractive forces known as chemical bonds.
There are three different kinds of molecules: atom-sized molecules, element-sized molecules, and compound-sized molecules.
A molecule is the smallest unit of any material that is composed of one or more elements and is capable of existing independently while maintaining all the substance's physical and chemical characteristics. Further atom division occurs within molecules.
Thus, In 5 molecules of Al₂( SO₄ ) there are 20 oxygen atoms are present.
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how are molecules, mixtures, and pure substance related
Answer:
Pure substances are further broken down into elements and compounds. ... A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded.
Explanation:
What type of bond is formed between sodium and sulfur
Answer:
The Bond would Be ionic
Explanation:
Thier electronegativites are way to differnt so Sulfur would steal from Sodium
Which two body systems are most affected when a person is participating in a marathon running event?
A. endocrine and digestive
B. Endocrine and muscular
c. skeletal and digestive
d. skeletal and muscular
Answer:
d. skeletal and muscular
Calculate the mass of .0605 moles of crystalline sucrose. Sucrose is C12 H22 O11 . The molar mass is __________ g/mole. Show your work below and record your answer.
Answer:
20.7g/mol
Explanation:
Can anyone explain this to me?
Dry hydrogen chloride was bubbled in methylbenzene and sodium carbonate added . Explain this observation.
Answer:
No observable change, unless dry hydrogen Chloride reacted in presence of a peroxide (ROOR)
an object with a mass of 300 kg is observed to accelerate at the rate os 4m/s² what is the total force required
Answer:
75 Newton
Explanation:
In order to find the force of the object, you must remember that the equation N = (mass x acceleration). Therefore meaning you would divide 300 kilograms, the mass, by 4 meters per second (squared), the acceleration.
Who discovered phosphate?
Answer:
Hennig Brand
Explanation:
hey what's the value of pi till
5 digits after decimal
Answer:
Pi to 5 decimals is 3.14159-
Brainlist pls!
P.S. It's a repeating number, but you can just put a (-), so that you don't have to type the whole thing out.
Answer:
sorry raaz report mat kerna
points collect kr rehe hai
A student heats a LaTeX: 2.5 g sample of calcium carbonate in a test tube. What mass of calcium oxide remains in the test tube when the reaction is complete?
CaCO3(s) to CaO(s) + CO2(g)
Select one:
a) 1.4 g CaO
b)2.1 g CaO
c)2.5 g CaO
d)1.0 g CaO
Answer:
2.5
Explanation:
Which group of elements will completely fill their s and p valence subshells?
Answer:
Nobel Gases will have a full p valance shell aswell as a s subshell
Explanation:
Identify the reaction type shown and describe the clues that were used to identify it. Fe2O3 + 2SiO2 → Fe2Si2O7
The type of reaction of Fe2O3 + 2SiO2 → Fe2Si2O7 would be that it is a synthesis reaction. It is a type of chemical reaction in which two or more simple substances combine to form a more complex product.
Answer:
The type of reaction of Fe2O3 + 2SiO2 → Fe2Si2O7 would be that it is a synthesis reaction. It is a type of chemical reaction in which two or more simple substances combine to form a more complex product. Hope this answers the question.
Explanation:
two gasses in the air that cause rusting
Answer:
oxygen and Hydrogen
Explanation:
Oxygen and Hydrogen causes rusting on metals after combining with moisture
Helpppp
Which of these is the BEST
description of extinction?
Answer:
d
Explanation:
Dr. Murrays science class recently read about an experiment that had surprising results. The decided to perform the experiment in their class, but they used more advanced methods. Their results
The question is incomplete, the complete question is;
Dr. Murray's science class recently read about an experiment that had surprising results. They decided to perform the experiment in their class, but they used more advanced methods. Their results
must be completely different, but they are more reliable.
could be the same as before, or they could be completely different.
must be the same as the recorded results, but they are more reliable.
could be the same as the recorded results, or they must be inconclusive.
Answer:
could be the same as before, or they could be completely different.
Explanation:
Now we know that in carrying out a scientific research, there is such a thing as replication.
Replication means that other scientists in other places carry out the same experiments previously done and expect to obtain the same results as the first time the experiment was done.
However, this is not a case of replication because a different and more advanced method was used in the experiment. Once the methodology of the experiment has been changed, then the results could be the same or different. Hence the answer above.
chemical formula for tin iv carbide
Answer:
Explanation:
Sn(WC)2
if it is tungsten carbide this should be correct but there are many versions of carbide
Sn(MC2)2
could also be possible
the 2 next to MC should be a subscript
Which of the following statements about nonmetal elements is true?
A.) Nonmetal elements are stronger than metals.
B.) Nonmetal elements are never used in computers.
C.) Nonmetal elements are sometimes cheaper to make.
D.) Nonmetal elements are used only in laptop computers.
Answer:
C
Explanation:
The statement which is true about non-metal elements is as follows:
Nonmetal elements are sometimes cheaper to make.Thus, the correct option for this question is C.
What are Non-metals?Non-metals may be defined as those chemical elements that significantly lack the attributes of metals. They generally range from colorless gases to shiny and high melting point solids. Some examples of non-metals include boron, carbon, nitrogen, etc.
Non-metals are not stronger than metals because the arrangement of bonds in metals is highly compacted. Non-metals are very frequently utilized in the manufacture of computers, laptops, and other electronic devices along with metals. But most of the time non-metals are cheaper to synthesize.
Therefore, non-metal elements are sometimes cheaper to make is a statement that is true about non-metal elements. Thus, the correct option for this question is C.
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SHOW WORK
A hummer weighs 3.2 tons, what is the weight in pounds (lbs)?
Balance the following chemical
equation by providing the correct
coefficients.
[? ]FeBr3 + []Na2S → Fe2S3 + NaBr
Answer:
2FeBr₃ + 3Na₂S → Fe₂S₃ + 6NaBr
Explanation:
The expression to be balanced is given as:
FeBr₃ + Na₂S → Fe₂S₃ + NaBr
To balanced this chemical equation, we can use a simple mathematical approach.
Simply use the alphabets a, b, c and d to represent the numbers that will make the equation balanced;
aFeBr₃ + bNa₂S → cFe₂S₃ + dNaBr
Conserving Fe;
a = 2c
Conserving Br;
3a = d
Conserving Na;
2b = d
Conserving S;
b = 3c
Let a = 1, b = [tex]\frac{3}{2}[/tex]
c = [tex]\frac{1}{2}[/tex] d = 3
Multiply through by 2 to get whole number ratios;
a = 2, b = 3 , c = 1 and d = 6
2FeBr₃ + 3Na₂S → Fe₂S₃ + 6NaBr
What can happen when tectonic plates move a few centimeters?
A. The atmosphere can become cooler.
B. Whole continents can move.
C. The ozone layer can thicken.
D. The moon can move closer to Earth.
Answer: B. Whole continents can move
Explanation:
Answer:the answer is b Whole Contenints can move
Explanation:took the test and got it right
Proteins are
A) built in the nucleus by DNA and transported to the ribosomes.
B) converted from nucleic acids to amino acids in the nucleolus.
C) made on ribosomes and then transported to golgi appartus.
D) created in the nucleus and then shipped to the parts of the cell where they are needed
Answer:
I would say B
Explanation:
If I'm wrong I apologize, have a good day
[tex] \huge \mathfrak \red{hello...}[/tex]
[tex] \blue{The \: correct \: answer \: is \: (C).}[/tex]
Thanku...hey martin991 im sorry i just realized that was a dif account please forgive me plz help me and HAPPY NEW YEAR ♧
Energy stored in the bonds between atoms is called
A.kinetic energy.
B.mechanical energy.
C.chemical energy.
D.thermal energy.
Answer:
A. Kinetic energy
Explanation:
Kinetic energy is stored in the bonds between atoms.
The force of gravitational attraction between two objects depends on the distance between the objects and their_____ 1. Buoyancies 2. Temperature 3. Masses 4. Shapes
Answer:Newton's law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them.
Objects with greater mass have a stronger force of gravity between them. ...
Objects that are closer together have a stronger force of gravity between them.
Explanation:
hope it helps
Answer:
masses
Explanation:
Explain the horizontal periodic trend
Answer:
Trends on the Periodic Table have a vertical component and a horizontal component. Vertical trend: as more “shells” are added to the electron cloud, it expands. Horizontal trend: if atoms have the same number of “shells”, atoms with more protons will draw the electron cloud in tighter.
Explanation:
2) If 100.0 J of heat are added to 20.0 g of water at 30.0°C, what will be the final
temperature of the water? What would the temperature be in Kelvin?
Why does the complete combustion of methane and octane produce the same product?E
Answer:
Because they are both of the same functional groups (alkane)
________ is the enthalpy change when 1 mole of a substance is formed from its elements under standard conditions.
A. ΔHθc
B. ΔHθn
C. ΔHθf
D. ΔHθa
The correct answer is C. ΔHθf
We define the standard enthalpy of formation as the enthalpy change when one mole of a substance is formed from its elements under standard conditions. The standard conditions are 1 atm pressure, 273 K temperature and 1 M concentration.
The standard enthalpy of formation is denoted using the symbol ΔHθf.
Hence, ΔHθf is the enthalpy change when 1 mole of a substance is formed from its elements under standard conditions.
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What does dehydration cause?
Dehydration can lead to a loss of strength and stamina. It's a main cause of heat exhaustion. You should be able to reverse dehydration at this stage by drinking more fluids. If dehydration is ongoing (chronic), it can affect your kidney function and increase the risk of kidney stones.
[I copied this from the internet, but hope this helps!]