Explanation:
they helped in discovering the atomic structure of elements making it easy to discover elements and their composition
what is the definition of behavior?
Answer:
the definition of behavior is the way in which someone conducts oneself or behaves.
Answer:
the way in which one acts or conducts oneself, especially towards others.
For example
he will vouch for her good behaviour"
How many joules of heat are absorbed when 73 g water are heated from 30*C to 43*C? *
Answer:
3966.82 J
Explanation:
q=sm∆T
q=73×13×4.18
the specific heat for water is 4.18
Answer:
[tex]\boxed {\boxed {\sf 39,668.2 \ Joules}}[/tex]
Explanation:
We are given the mass and change in temperature, so we must use this formula for heat energy:
[tex]q=mc \Delta T[/tex]
The mass is 73 grams. Water's specific heat is 4.18 J/g × °C. Let's calculate the change in temperature
ΔT= final temperature - initial temperatureΔT= 43 °C - 30°C ΔT= 13 °CNow we know all the variables and can substitute them into the formula.
[tex]m= 73 \ g \\c= 4.18 \ J/g* \textdegree C \\\Delta T= 13 \ \textdegree C[/tex]
[tex]q= (73 \ g )(4.18 \ J/g*\textdegree C)(13 \textdegree C)[/tex]
Multiply the first numbers together. The grams will cancel.
[tex]q= 3051.4 \ J/\textdegree C (13 \textdegree C)[/tex]
Multiply again. This time, the degrees Celsius cancel.
[tex]q= 39668.2 \ J[/tex]
39,668.2 Joules of heat energy are absorbed.
explain why there is a period of constant temperature during melting and freezing. use
Answer:
Because the heat energy provided at the moment of melting and freezing are used up in the transformation of the state of matter!!
Thus the temperature remains the same
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......
Which is TRUE about intermolecular
forces?
They are STRONGER than a chemical
bond
They are WEAKER than a chemical bond
Answer:
They are Weaker than a chemical
bondcorrected by the one in the comment section
What is a physical property of water? *
not flammable
reacts with sodium
liquid at room temperature
I'LL GIVE BRAINLIEST PLEASE HELP. I need to give two arguments as to why climate change is not linked to greenhouse gases and I have no idea what to put.
As greenhouse gas emissions from human activities increase, they build up in the atmosphere and warm the climate, leading to many other changes around the world—in the atmosphere, on land, and in the oceans.
Hope it helps:D
plz help me i swear will mark you brainiest :(
Answer:
C. the relative molecular mass of the compound
Explanation:
Like molecular formulas, empirical formulas are not unique and can describe a number of different chemical structures or isomers. To determine an empirical formula, the relative molecular mass of the composition of its elements can be used to mathematically determine their ratio.
What structure actively moves water through a sponge?
Answer:
Answer is flagella
Explanation:
I hope it's helpful!
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.
Learn more about chemical weathering at: https://brainly.com/question/14426457
(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.
Will is learning about a new kind of plastic used to make models. He learns that infrared light is absorbed by the plastic, X-ray light is transmitted through the plastic, and visible light is reflected off the plastic. Will wonders if the plastic will melt if he shines the lights on it. Can light cause the plastic to melt? Why or why not? Does it matter what type of light he shines on the plastic?
Answer: Yes, I think light can cause the plastic to melt, as long as the energy from the light is absorbed by the plastic.
Explanation:
Visible light will not melt the plastic because the energy does not pass through the plastic, it reflects off ensuring that the plastic does not absorb the energy. X-ray light is transmitted through the plastic, unlike the visible light, but the energy still isn't absorbed by it. The infrared light is the only one left, it is absorbed by the plastic allowing it to change and melt the material, unlike the visible and x-ray lights.
The plastic will melt if the energy from the light is absorbed by the plastic.
What are Electromagnetic radiations?These are forms of electromagnetic waves which propagate through space
and carry electromagnetic radiant energy. Examples include:
X-rayVisible lightInfrared etcVisible light and X-ray light won't melt the plastic as a result of the energy
not being absorbed whereas in the case of Infrared lights, the energy is
absorbed which will led to the melting of the plastic.
Read more about Electromagnetic radiation here https://brainly.com/question/1293367
I NEED HELP NOW!!!!!!!!!!!
Which ball (frame A or B) is moving with a higher velocity when it strikes the ground, and which ball has the greatest kenetic energy?
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
B: the balls in frame A and B have the same velocity, while the ball in frame B had the highest kenetic energy
C: the ball in frame B has the highest velocity and the highest kenetic energy
D: the ball in frame A has the highest velocity and the highest kenetic energy
A: the ball in frame A had the highest velocity, and the ball in frame B has the highest kinetic energy
which sphere includes all the plants and animals on earth?? A. Lithosphere B.Type of soil C.Biosphere D.Asthenosphere
Answer:
Biosphere
Explanation:
It is B i think
HELP ASAP PLEASE!!!!
Answer:
solid objects
cooler to warmer
sitting on a metal chair.
Explanation:
im correcr
Where does nearly all life get its energy from? *
Oxygen
A.Sun
B.Produce
C.Soil
Which best describes particles in a liquid?
more freely moving than a solid
completely stationary
more freely moving than a gas
Answer:
More freely moving than a solid
Explanation:
In a sealed container at constant pressure, the volume is 25L. When cooled down to 100K the volume decreases to 6.25L. What was the original temperature of the container? *
A. 50k
B. 100k
C.250k
D.400k
1. Four (4) is a coefficient found in which of the following
chemical formula?
a. 4KCN
b. 3K2PO3
C. 6(NH4)2PO4
d. 2KNO3
Answer:
a. 4KCN
Explanation:
Four is a coefficient found in the chemical formula 4KCN.
KCN is potassium cyanides.
A coefficient is a number that is written before a chemical compound. It is usually used to balanced reaction expression.
Chemically such numbers indicate the number of moles or volume of that specie.
Since KCN is the only compound with 4 before it, so, the solution is KCN
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
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.
BRAINLIEST!! PLS HELP!!
Answer:
b be aosum
Explanation:
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)
When two clear substance combines, an insoluble solid is formed that settle downs as a
[tex] \huge \sf \underline \blue{Question} \colon[/tex]
When two clear substance combines, an insoluble solid is formed that settle downs as a ________.
[tex] \huge \sf \underline \blue{Answer} \colon[/tex]
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.
______________________________________
Which element has 5 energy levels and 2 valence electrons?
Answer:
Element 38: Strontium
Explanation:
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
Which is a benefit of genetically modified foods?
A.When foods are genetically modified, they are always resistant to disease and drought.
B.When foods are genetically modified, they no longer need to be studied.
C.The cost of research is included in the cost to the consumer.
D.The cost of food will decrease, and the quality of food will increase.
Answer:
Some benefits of genetic engineering in agriculture are increased crop yields, reduced costs for food or drug production, reduced need for pesticides, enhanced nutrient composition and food quality, resistance to pests and disease, greater food security, and medical benefits to the world's growing population.
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
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.
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