Answer: Water
Explanation: During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil
A mixture that you eat with at least 6 compounds in it
Answer:
Coloured candies?
Explanation:
Do you have more human cells or
bacteria cells in your body?
The volume of a bottle is 500cm. what is the volume of the bottle in millimeters
Answer:
5000mm
Explanation:
10mm makes 1 cm
so if we compare them:
10mm-->1cm
x -->500cm
now cross multiply:
1x-->5000
divide both sides by 1 for x to be alone
therefore we get x=5000
Is this statement true or false?
The products of a chemical reaction have the same properties as the reactants.
true
false
Answer:
The answer is B. False
Explanation:
Salt from evaporated seawater has been formed from
O a. artifical means
O b. solution
O c. volcanoes
O d. magma
Answer:
a
Explanation:
its formed from sodium and sodium metal is produced by electrolysis of dry molten sodium chloride.
(WILL GIVE BRAINLESS )Complete the sentence describing Newton's third law of motion: For every action in one direction, O b ос Od a weaker force acts in the same direction. an equal force acts in the opposite direction. a stronger force acts in the opposite direction. an equal force acts in the same direction.
Answer:
An equal force acts in the opposite direction.
Explanation:
What are the relationships among a hydrogen atom's energy levels, sublevels, and atomic
orbitals?
The relationship between an hydrogen atom's energy levels, sublevels and atomic orbitals lies in the fact that hydrogen atom has a shell with energy level of 1 and the energy sublevels are similar as there's only one and have the same energy, and lastly, only one atomic orbital exists in a hydrogen atom
Generally, an atoms energy level, sublevels and atomic orbitals are described by the four quantum numbers if it's Valence electrons.Among laws of atomic theory is the fact that no two electrons can have the same value for all four quantum numbers in an atom.Ultimately, the hydrogen atom has only one electron In the energy level 1, sublevels with equal energy as there are no sublevels in the energy level 1 and only the 1s atomic orbital.
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What is the last step in the scientific method?
Answer:
D. Communication of results
Answer:
b.
conclusion
because it gives the overall information about the experiment
When you use a simple machine to do work, ________.
A
distance increases and force decreases
B
distance and force both increase
C
distance and force both decrease
D
distance decreases and force increases
Answer:
distance decreases and force increases
Explanation:
Simple machine means less power Hence it will require more force.Hence distance will decrease with respect to force and force will decreaseWhen we use a simple machine to do work, the distance decreases, the force increases. Hence, option D is correct. Because, these parameters are in inverse proportion.
What is force?Force is an external agent acting on a body to change its motion. There are various kinds of force such as frictional force, magnetic force, gravitational force etc.
Work done is the effectiveness of the machine to use the force to make the maximum displacement. Work done is the product of force and distance.
W = F.ds
As per this relation, the force acting on large distance makes greater work done. However,
F = W/ds.
Hence, as the distance increases, the force is decreasing. Therefore, option D is correct.
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PLS HELP ASAP!
How many years?
The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is 5.73×103 years.
A wooden artifact in a museum has a 14C to 12C ratio that is 0.745 times that found in living organisms. Estimate the age of the artifact.
use graph
Answer:
about 5 years i think
Explanation:
I've tried all the methods i know
it's about 5 years
hope it helps
The age of the artifact is equal to 2.5 × 10³ years when the half-life of carbon- 14 is 5.73 × 10³ years.
What is the half-life period?The half-life of a radioactive element is defined as the time that is required to decrease the original quantity of a radioactive isotope to half after decay.
The half-life of a radioactive isotope is the feature of the element and does not depend upon the actual amount of the radioactive isotope.
Given, the ratio of the initial and left amount of ¹⁴C is :
N = 0.745 N₀
The half-life period of the ¹⁴C isotope = 5.73 × 10³ years
The rate constant of the decay of radioisotope can be calculated from the below-mentioned formula:
[tex]\displaystyle k=\frac{0.693}{t_{1/2}}[/tex]
[tex]\displaystyle k=\frac{0.693}{5.73 \times 10^3}[/tex]
k = 0.123 × 10⁻³ yr⁻¹
The age of the artifact can be calculated as:
[tex]\displaystyle t =\frac{2.303}{k} log\frac{N_0}{N}[/tex]
[tex]\displaystyle t =\frac{2.303}{0.123\times 10^{-3}} log\frac{N_0}{0.735 N_0}[/tex]
t = 2.5 × 10³ years
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Magnesium is in Group 3. Strontium is in group 5. Which element do you predict will be less reactive in water?
Answer:
Strontium
Explanation:
strontium will be less reactive because reactivity decreases down the group
I'LL MARK BRAINLIST
Lab: Kinetic Energy
I NEED TWO PARAGRAPHS ABOUT THE LAB AND ABOUT KINETIC ENERGY
Answer:
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body when decelerating from its current speed to a state of rest.
In classical mechanics, the kinetic energy of a non-rotating object of mass m traveling at a speed v is 1/2*mv^2. In relativistic mechanics, this is a good approximation only when v is much less than the speed of light.
The standard unit of kinetic energy is the joule, while the English unit of kinetic energy is the foot-pound.
Explanation:
Don't directly copy and paste this because you will get flagged for plagiarism. Just type this out in your own words and change a few of the words to their synonyms.
the only report that will fool the teachers
How many grams are there in 7.2 moles of AgNO3?
Answer:
1223.08632 I think....
Answer:
53
Explanation:
it is easy divide 100 by 200 and get 100
where are metal atoms located on the periodic table
Answer:
to the right of the steps
Explanation:
the metals stop at the stair step
1. What are the 5 characteristics a substance must have in order to be a mineral
Answer:
A mineral has to be naturally occurring, inorganic, solid, have a crystal structure, and have a definite chemical composition.
Explanation:
what is the weight of the ethil alcohol that exactly falls a 200 .0 mL container ? the density of ethyl alcohol is 0.789 g/mL
Answer:
158 grams
Explanation:
Hydrogen and oxygen react to form water true or false
Answer:
false
Explanation:
they dont spontaneoulsy form water
um I don't know just thanks :(
Answer:
i think it would be answer D
Explanation:
what is the purpose of the dts other auths and pre audits screen?
Answer:
It allows the traveler to justify questionable expense items.
hope that helped <3
An electromagnet is created by
A. putting a piece of soft iron in an outlet.
B. brushing a piece of steel with a soft cloth.
C. running electric current through a coiled, conductive wire.
D. rubbing two pieces of metal together quickly.
A. putting a piece of soft iron in an outlet
what is the acceleration due to gravity of the moon
What is the mass of 7.4 x 10^15 atoms of nickel (Ni)?
Since we are starting from the number of atoms of Nickel, we need to know two sets of formulas:
mass = moles × molar mass
moles = atoms ÷ Avogadro's Number
⇒ mass = (atoms ÷ Avogadro's Number) × molar mass
mass = [(7.4 × 10¹⁵ atoms) ÷ (6.022 × 10²³ atoms/mole)] × (58.69 g/mol)
= 7.21 × 10⁻⁷ g
The mass of 7.4 x 10^15 atoms of nickel (Ni) is 7.21 × 10⁻⁷ g.Elements have different properties because they are made up of different types of
atoms.
Right a 5 sentence paragraph explaining this!!!
Answer:
,
Explanation:
Answer:
An atom is the smallest partical in the universe that makes up everything you see around you. Every chemical element is also made up of atoms. Since atoms are what give each element their defining characteristics, each element can be composed of multiple atoms but you must have all of the same type of atoms combined in order for it to be considered an element. For example the element gold can only contain gold atoms. If you mix the atoms of one element with the atoms of another your substance has then been changed from an element to a compound.
Explanation:
how do the melting points of enantiomers compare to each other? how do the melting points of diastereomers compare to each other?
Melting points of enantiomers will not compare to each other as they have same M.P. and Diastereoisomers are compared on the basis of melting point.
What are steroisomers?Stereoisomers are those isomers which are having the same molecular formula but different spatial arrangemet of atoms within the molecule.
Enantiomers: Enantiomers are pair of two stereoisomers which are having mirror image of each other, but are not superiposable. They have the same melting point so we can not compare enantiomers on the basis of their melting point.Diastereoisomers: Diastereoisomers are pair of those stereoisomers which are not having mirror image of each other, but are superimposable.They have different physical and chemical properties, so it can be compared on the basis of melting point.Hence, only diastereoisomers are compared on the basis of melting point.
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at the end of the isomerization reaction, what chemical is used to quench the residual bromine?
Answer:
They are constitutional isomers and diastereomers.
Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of -7.2°C. Bromine can be
classified as a
Answer:
Selenium
adadadadad
Explanation:
if u ask which group
so it is halogen
or u ask which type of matter
then liquid
An effective treatment for some cancerous tumors involves irradiation with fast neutrons.
The neutrons from one treatment source have an average velocity of 5.7 x 10 m/s. If the velocities of individual neutrons are known to within 2% of this value, what is the
uncertainty in the position of one of them?
__m
Here is your answer look at your image below
Sodium reacts with chlorine to form the compound sodium chloride, or salt. The chemical formula below shows how the two elements combine into a compound.
2Na + Cl2 → 2NaCl
If the total mass of the reactants is 58.44 amu, what will be the total mass of the products?
116.88 amu
60 amu
58.44 amu
29.22 amu
Answer:
Its C
Explanation:
The law of conservation of mass says no atoms can be created or destroyed just rearranged so the mass at the beginning before the reaction would stay the same after it
Considering the Law of Conservation of Matter, the correct answer is the third option: the total mass of the products will be the same and has a value of 58.44 amu.
The Law of Conservation of Matter is also called the law of conservation of mass or the Law of Lomonósov-Lavoisier. This law postulates that "the mass is not created or destroyed, only transformed."
This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends.
In other words, then the mass before the chemical reaction is equal to the mass after the reaction.
So, in this case, if the total mass of the reactants is 58.44 amu, the total mass of the products will be the same and has a value of 58.44 amu.
Finally, the correct answer is the third option: the total mass of the products will be the same and has a value of 58.44 amu.
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https://brainly.com/question/13383562?referrer=searchResultshttps://brainly.com/question/14236219how many electrons must beryllium gain or lose to form stable ions
Explanation:
beryllium must loss 2 electrons to form a stable octet to its nearest noble gas Helium.
It can loss electron because it is a metal and is placed in 2group and 2 period in group of alkaline earth metals.
hope this helps you to.
in which direction on the periodic table does metallic character increase?
Answer:
Metallic character increases down each Group of the Table as the outer electrons are further from the nucleus and require less energy for their removal. (a) metallic character decreases from left to right in each Period.
Explanation:
The metallic character increases down each Group on the periodic table.
The metallic character decreases from left to right in each Period.
What is periodic table ?The chemical elements represents in tabular form.The elements in periodic table arranged on the basis of increasing atomic masses.The interactive periodic table showing name, atomic number, atomic mass, boiling point, melting points , state of matter etc.What is metal and its metallic character?The elements having strong tendency to loss their electrons is called metals.The metals have characteristics of ductile, malleability, The metallic character refers to reactivity of metals.learn about metallic character,
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