Answer:
Fish is the best time to go
Explanation:
Chicken nuggets and a salad and some onion rings and a new charger
Which best describes a chain reaction associated with a nuclear reaction?!!
Answer: The statement that describes a chain reaction brought about by a nuclear reaction is "neutrons released during a fission reaction cause other nuclei to split." This is applicable to fission reactions only wherein atoms split and produce neutrons that also cause further atoms to split, thus creating a chain or series of reactions.
plz mark brainliest
Draw the Lewis dot diagram for a Mg- anion.
Answer:
..
Explanation:
What is a property in Science
•how much space an object takes up
•something that changes all the time
•a characteristic or a quality of an object or substance
• a spoon
Answer:
dhsjsbdjdnxjdjdbrbdnñxndndndndjdndndndbf it's b
How many moles ar Li are in 9.53x^24 atoms of Li?
Answer: 15.83 mol
Explanation:
To convert from atoms to moles, we will need to use Avogadro's number.
Avogardo's number: 6.022×10²³ atoms/mol
[tex]9.53*10^{24} atoms*\frac{1mol}{6.022*10^2^3 atoms} =15.83 mol[/tex]
Now, we know that there are 15.83 moles.
What do you think it means to use science to answer a question?
*ANSWER AND ILL GIVE YOU BRAINLIEST ANSWER*
Answer: Science is an accurate measure of whats true, there are laws of science like physic, and mathematics and you can prove your answer by using science
Explanation:
100 Points Will Make Brainliest. Help Me Please.
I said glasses and gloves first time and it was wrong.
Which of the items shown here will protect you from a chemical burn? Select all that apply.
A hand in a rubber glove.
A fire extinguisher.
A pair of glasses with clear shields attached on the sides.
A power source.
If the glasses and glove were wrong then I would chose the fire extinguisher and the power source should be the correct answer.
That's just what I would do though.
Answer:
rubber gloves and glasses
Explanation:
rubber gloves and glasses
what does it mean to say that a hypothesis is falsifiable
Answer: This means that the answer can be proven wrong.
Explanation:
Hope this helps!!
Answer:
is means it can be proven false
whats an organic chemist
How should the baking of a pizza be categorized? A) as an exothermic process because the dough releases heat B) as an endothermic process because the dough releases heat C) as an exothermic process because the dough absorbs heat D) as an endothermic process because the dough absorbs heat
Answer:
D
Explanation:
as an endothermic process because the dough absorbs heat
The baking of a pizza be categorized as an endothermic process because the dough absorbs heat.
What is an Endothermic reaction?This is the type pf reaction in which heat is absorbed from the surroundings in a reaction.
During baking, the oven which is the surrounding is usually hot which brings about the dough absorbing the heat. This depicts an endothermic process and makes option D the most appropriate choice.
Read more about Endothermic reaction here https://brainly.com/question/6506846
If you were running an experiment to determine the temperature at which
beans grow the fastest, what would be the dependent variable?*
The number of beans you plant.
The height of the sprouts you grow.
The amount of water you give the beans.
The temperature at which each bean is kept.
Answer:
Well, it would be the height of the plant. The independant varibles would be the amount of water you give the beans or the temperature you keep them!
Explanation:
I hope this helps!
Why is chemistry known as the "central" science?
A. because chemistry involves the study of the central parts of matter
B. because chemistry is fundamental to understanding the other sciences
C. because chemistry is always studied after biology and before physics
D. because chemistry deals with processes that affect living and nonliving things
Answer:
D
Explanation:
Chemistry is often called the central science because of its role in connecting the physical sciences, which include chemistry, with the life sciences and applied sciences such as medicine and engineering. The nature of this relationship is one of the main topics in the philosophy of chemistry and in scientometrics.
Which of the following happens during a chemical reaction?
Atoms of reactants are destroyed.
New atoms are created to form the products.
Atoms of reactants rearrange to form new substances.
The total mass of the reactants is less than the total mass of the products.
Answer:
Atoms of reactants rearrange to form new substances
Explanation:
During a chemical reaction, atoms of reactants rearrange to form new substances.
What is a chemical reaction?Chemical reactions are defined as reactions which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical reaction.
There are several characteristics of chemical reactions like change in color, change in state , change in odor and change in composition . During chemical reaction there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
There are three types of chemical reactions:
1) inorganic reactions
2)organic reactions
3) biochemical reactions
During chemical reactions atoms are rearranged and changes are accompanied by an energy change as new substances are formed.
Learn more about chemical reactions,here:
https://brainly.com/question/29762834
#SPJ2
a liquid that occupies the volume of 3.23 L has a mass of 3.188 kg what is the density of this liquid in kilograms to liters
Answer:
0.97 kg/l
Explanation:
a beaker contains 0.250 l of liquid. a student pours 0.00385 L of liquid out of the beaker. How much liquid remains in the beaker? choose the value reported with the correct number of significant figures
Answer:
The volume of the liquid remaining in the beaker is 0.24615 l
Explanation:
The initial volume of liquid in the beaker = 0.250 l
The volume of liquid the student pours out of the beaker = 0.00385 l
The volume of liquid remaining in the beaker, V, is given as follows;
V = The initial volume of liquid in the beaker - The volume of liquid the student pours out of the beaker
Therefore, we have;
V = 0.250 l - 0.00385 l = 0.24615 l
The volume of the liquid remaining in the beaker is 0.24615 l.
A 20 kg curling stone is sliding is sliding in a positive direction at 4 m/s. A second curling stone is sliding at the same speed but in the opposite direction. What is the kinetic energy of the two stones?
Answer:
The kinetic energy of the two curling stones is 320 J
Explanation:
Given;
mass of the first curling stone, m₁ = 20 kg
velocity of the first curling stone, v₁ = 4 m/s
velocity of the second curling stone, v₂ = - 4m/s
assuming the second curling stone to have equal mass with the first stone = 20 kg
The kinetic energy of the first curling stone is given by;
K.E₁ = ¹/₂m₁v₁²
K.E₁ = ¹/₂(20)(4)²
K.E₁ = 160 J
The kinetic energy of the second stone is given by;
K.E₂ = ¹/₂m₂v₂²
K.E₂ = ¹/₂ (20) (-4)²
K.E₂ = 160 J
Thus, the kinetic energy of the two curling stones is given by;
K.E = K.E₁ + K.E₂
K.E = 160 J + 160 J
K.E = 320 J
Therefore, the kinetic energy of the two curling stones is 320 J
what is strong interaction in atoms
Answer:
Alternative Titles: nuclear force, strong interaction, strong nuclear force. Strong force, a fundamental interaction of nature that acts between subatomic particles of matter. The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons.
If density usually increases with decreasing temperature, why does ice float on liquid water? Explain.
Answer:
If you continue to cool water past 4 degrees Celsius, its density starts to plummet (you can see this in the graph). At zero degrees, i.e., the temperature at which water turns into ice, the density of water is actually quite low. It turns out that ice has a lower density than water, and any object that has a lower density than the liquid form on which it’s kept (in this case, water) will be able to float!
Explanation:
The ice floats in water because the hydrogen bonds in the ice change to negative, and Ice is, therefore, less dense than water because the density of water actually reduces as the temperature drops.
What are ice and water?Ice is the form of water. It is the frozen form of water. It is made up of hydrogen and oxygen.
The hydrogen bonds in water change as it cools, holding the negatively charged oxygen atoms apart and preventing the ice from getting much denser.
Water loses density after 4 degrees Celsius of cooling, therefore don't do it The water's density is actually relatively low at zero degrees, the temperature upon which water transforms into ice.
Thus, as it turns out, ice has a lower density than water, therefore any object will be able to float if its density is lower than that of the liquid state it is kept in.
To learn more about ice and water, refer to the below link:
https://brainly.com/question/11696500
#SPJ2
ANSWER PLEASE ..Which property of an element would be MOST helpful in determining its column in
the periodic table?
The column number of an element in the periodic table is generally determined on the basis of the number of valence electrons. The elements in the same column have similar chemical properties.
What are valence electrons?The electrons present in the outermost shell of an atom which take part in chemical reactions are called the valence electrons. These electrons are responsible for the interaction between the atoms and the formation of chemical bonds.
The valence electrons of an atom also gives us an idea about the chemical properties of elements like valency, the number of unpaired electrons present, etc. The column number of an element is mainly determined on the basis of number of valence electrons.
The elements are placed in vertical columns in the periodic table. There are 2 electrons in the outermost shell of Alkaline earth metals. So they belong to second column.
Thus it is the valence electron which determines the column number.
To know more about valence electrons, visit;
https://brainly.com/question/28977387
#SPJ6
thomas atoms theroy
Answer:
Do you want to us to explain what it is
Explanation:
Answer:
APEX
Explanation:
The electron
What is the difference between a continuous spectrum with an emission line spectrum?
Answer: A Continuous spectrum is a spectrum that has all wavelengths with no gaps over a wide range. An Emission spectrum is when an electron in an excited state moves to a lower energy level, it emits a certain amount of energy as photons.
I found this information off of a site called “socratic.org.” I hope i could help!
What is a carcinogen? a. a toxin linked to an increased risk of cancer b. a non-carbon based chemical c. a type of pollution that can be traced to a specific source d. a type of pollution that cannot be traced to a specific source
Answer:
Explanation:
a i think
Answer:
it would (a)
Explanation:
carcinogen is a substance that gives your tissues a higher chance of getting cancer
What are the units for Rf values? Please help!
Answer:
Microwatts.
Explanation:
RF + EMF Unit Conversion Charts: Interpreting exposure levels. When measuring Radio Frequencies, the most common units of measurement are microwatts per square meter (µW/m2), microwatts per square centimeter (µW/cm2) and volts per meter (V/m).
Answer:
No units
Explanation:
In Thin Layer Chromatography (TLC), retention factor (Rf value) is found by taking the distance travelled by the spot divided by the distance of the solvent front. Rf value is a ratio of distances hence they have no units.
Mathematical derivation
The distance travelled by the spot is in cm, and that of the solvent front is also in cm. Thus, dividing the two units would give us no units for the Rf value.
What is TLC?
TLC is a technique used for separation and identification. The stationary phase is polar while the solvent is relatively nonpolar. Thus, the less polar substance is more attracted to the solvent (according to the principle of 'like attracts like') and travels further and thus have a higher Rf value.
To learn more about Rf values, check out: https://brainly.com/question/14393140
Plsss help me now pls plss its a false and true questions
Answer:
to the atomic number one, is true
A student says: Potassium (K) always has 20 protons. Explain why the student is incorrect.
Explanation:
19
Potassium/Atomic number
This tells you that potassium has 19 protons and - since the number of protons is the same as the number of electrons- also 19 electrons. To find out the number of neutrons you have to look at the atomic mass or weight of the element. This can also be found in the periodic table.
What words do we use to talk about a column of the periodic table? (2 CORRECT ANSWERS) Period Group Family Atom Nucleus
When talking about a column of the periodic table the word we use is (B). Group
Meaning of a group in a periodic tableA group in a periodic table is a column in the periodic table of chemical elements.
In a group, all the chemical elements have similar properties which include; atoms of the same vacancy in valence and valence electron.
Groups have similar physical and chemical properties.
Groups in a periodic table are numbered from number 1 to number 8, and it is numbered from the left to the right side of the periodic table.
In conclusion, When talking about a column of the periodic table the word we use is Group
Learn about Groups in a periodic table: https://brainly.com/question/15987580
#SPJ2
A balloon has a volume of 10,500 liters, and the temperature is 15°C. If the temperature were -25°C, what would the volume of the balloon be?
12,194 L
9,042 L
Answer: 12,194 L
Explanation:
Been struggling with this question for a while, some help will be appreciated :)
What happens when aluminum fills its valence shell? A. Three electrons are gained, creating Al−3. B. Three electrons are gained, creating Al+3. C. Three electrons are lost, creating Al−3. D. Three electrons are lost, creating Al+3.
Answer:
B
Explanation:
Answer:
its D I just took the test
Explanation:
Give 5 examples of branches of science, then give an example of situations that apply the use of it in daily activities. Example: PHYSICS - Turning the light on and off.
Answer:
See explanation
Explanation:
Biology- digestion of food materials
Chemistry- dissolving salt in water
Astronomy - observing day and night
Physics - watching a television
Geography - observing weather changes during the day
how does kinetic energy at the bottom of a hill compared to its potential energy at the top
Answer:
Kinetic energy would have to work ten times harder than potential energy.
Explanation:
Let’s say you have a boulder and your asked to push it up the hill it would be difficult right? But lets reverse the situation what if you are asked to roll the boulder down the hill it wouldn’t be much work because the hill is basically doing all the work For you. Hope this Helps:)