Answer:
Option A - nucleus
Explanation:
A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. All compounds are molecules, but not all molecules are compounds.
Two atoms combine to form a molecule.
What is a molecule?
Molecule is two or more atoms connected by chemical bonds and form the smallest unit of a substance that retains the composition and properties of that substanceThe atoms can be the same like in oxygen molecule - An oxygen molecule has 2 oxygen atomsThe atoms can be different like in a water molecule - A water molecule has 2 hydrogen and 1 oxygen atomWhat is a nucleus?
The nucleus is positively charged region at the center of the atomIt consists of two types of subatomic particles packed together. The particles are protons and neutronsProton has a positive charge and neutron is electrically neutralWhat is a proton?
A proton is a subatomic particle found in nucleus of every atomProtons have a positive electric charge The number of protons in each atom is its atomic numberWhat is an electron?
It was discovered by English physicist J.J.Thomson Electron is a negatively charged subatomic particle that can be either bound to an atom or freeThey exist outside the nucleusThey are significantly smaller in mass and have both wave-like and particle-like characteristicsLearn more about Molecules at https://brainly.com/question/13348791
#SPJ2
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
How many atoms are in 2NaCHO2
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
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?
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:
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.
Helpppp
Which of these is the BEST
description of extinction?
Answer:
d
Explanation:
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
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:
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
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:
Who discovered phosphate?
Answer:
Hennig Brand
Explanation:
What kind of material will reduce the flow of heat energy?
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.
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)
two gasses in the air that cause rusting
Answer:
oxygen and Hydrogen
Explanation:
Oxygen and Hydrogen causes rusting on metals after combining with moisture
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)
Please help me!!!!!!!!!!!!!!
Which of the following is NOT a sign of a chemical reaction:
a
bubbles
b
precipitate
c
changing from liquid to gas
d
color change
________ 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.
https://brainly.com/question/3640529
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:
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:
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
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.
To learn more about Non-metals, refer to the link:
https://brainly.com/question/23938148
#SPJ2
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.
Can anyone explain this to 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.
To learn more about the molecule, follow the link;
https://brainly.com/question/19556990
#SPJ2
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
Hydrogen sometimes is “blank” an electron and sometimes it has an “blank” electron.
Hydrogen sometimes is missing an electron and sometimes it has an extra electron.
Helium (He) and hydrogen (H) are unique elements. Hydrogen has the abilities and electrons of two groups, one and seven, and occasionally has more electrons than it does.
What are electrons?Electrons are defined as a subatomic particle with a negative charge that makes up the nucleus of an atom along with protons and neutrons. For scientists, it can be challenging to monitor them because of how quickly they spin. The tiniest particles in an atom, you can put 2000 of them into a proton, they are drawn to the positive charge of the protons.
Because it has no neutrons in its nucleus, hydrogen (particularly hydrogen -1) is unusual. There is only one proton in the nucleus of hydrogen. The only element without neutrons is this one. Although it has a single electron orbiting its nucleus as well, hydrogen typically contributes this electron to form a single, positively charged proton instead.
Thus, Helium (He) and hydrogen (H) are unique elements. Hydrogen has the abilities and electrons of two groups, one and seven, and occasionally has more electrons than it does.
To learn more about electrons, refer to the link below:
https://brainly.com/question/1255220
#SPJ6
Cesium-133 has an atomic number of 55. It has
neutrons.
Answer:
The answer is 78
Explanation:
133 - 55 = 78