Answer:
Melting point
Explanation:
Pure substances have sharp melting and boiling points while impurities lower the melting point and raise the boiling point
What is a limitation of using a chemical formula such as C6H12O6 to represent a compound?
Answer:
The chemical formula does not show how the atoms are connected to one another.
Explanation:
Answer:
B: The chemical formula does not show how the atoms are connected to one another.
Explanation:
Got correct on EDG unit test review
Pls mark me brainliest
Fun fact
Recycling one glass jar saves enough energy to watch television for 3 hours! ™
I found that out in a weird book
It had pretty weird things in there and it that this in there too
What is molarity? .
Families 1-2 and 13-18 are called the...
A. transition elements.
B. radioactive elements.
C. representative elements.
D. rare earth elements.
Answer:
C. representative elements.
Explanation:
Families 1 - 2 and 13 - 18 are called representative elements or often times, main group elements.
Elements on the periodic table belongs to four blocks which are s, p, d and f blocks. Those in the s and p-blocks are the main group elements also called representative elements. Their outer-shell are not completely filled with electrons but their inner shell is completely filled.How many moles are in 1.52908x1024 molecules of Potassium phosphate (K3(PO4))?
Answer:??? moles K3(PO4) (no rounding)
Answer:
2.54 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{1.52908 \times {10}^{24} }{6.02 \times {10}^{23} } \\ [/tex]
We have the final answer as
2.54 molesHope this helps you
In photosynthesis, carbon dioxide reacts with water to form sugar and oxygen. Which of the compounds from photosynthesis is organic
A.carbon dioxide
B.sugar
C.water
D.oxygen
Which statement describes DNA?
The answer: DNA stores an organism’s genetic code.
Answer:
DNA stores an organism’s genetic code.
Explanation:
if you can do this for me that would be great thank you!
Answer:
Mass is both a property of a physical body and a measure of its resistance to acceleration when a net force is applied. An object's mass also determines the strength of its gravitational attraction to other bodies. The basic SI unit of mass is the kilogram.
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Gravitational energy or gravitational potential energy is the potential energy a massive object has in relation to another massive object due to gravity. It is the potential energy associated with the gravitational field, which is released when the objects fall towards each other.
In science and engineering, the weight of an object is the force acting on the object due to gravity. Some standard textbooks define weight as a vector quantity, the gravitational force acting on the object. Others define weight as a scalar quantity, the magnitude of the gravitational force
Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.
Explanation:
The atmosphere of Venus consists mostly of _____.
A.) sulfur
B.) carbon dioxide
C.) oxygen
D.) hydrogen
The atmosphere of Venus consists maximum of carbon dioxide. The correct option is B.
Why it is not possible to have life on Venus?With extreme surface temperatures approaching 735 K and an atmospheric pressure 90 times that of Earth, Venus's conditions make water-based life as we know it on the planet's surface unlikely.
The atmosphere is also full of carbon dioxide which makes it impossible to sustain life.
Thus, the correct option is B.
For more details regarding life on Venus, visit:
https://brainly.com/question/23627592
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the block of aluminium shown above has a height of 4.0mm a width of 6.0mm and a depth of 1.8mm , if its mass is 116.64mg , what is its density in g/cm3?
Answer:
[tex]4m^2[/tex]
Explanation:
Multiply [tex]m[/tex] by [tex]m[/tex], by adding the exponents
Whoever answers this correctly, I will give Brainliest. Plz hurry!!:)
Which series of words describe lengths of geologic time from shortest to longest?
A. eon
B. era
C. period
D. era
Answer:
eon era period
Explanation:
Which is a dominant trait that Mendel observed in pea plants?
bumpy pods
short height
yellow seeds
white flowers
Answer:
Yellow seeds
Explanation:
Dominant traits are those that are inherited unchanged in a hybridization like the yellow seeds.
Answer:
yellow seeds
Explanation:
Look at the image shown
What does this image represent?
a) Linear molecule with one domain
b) Linear molecule with two domains
c) Tetrahedral molecule with four domains
d) Trigonal planar molecule with three domains
Answer:
b) Linear molecule with two domains
Explanation:
The image represents a linear molecule with two domains.
The compound shown here is carbon dioxide in which a central carbon atom is surrounded by two oxygen atoms.
This bond geometry is of the type AX₂ In this linear molecule the bond angle is a perfect 180° The lone pairs are perfectly balanced out and will not cause distortion of the central carbon.The image has been consisted of the linear molecule with two domains. Thus, option B is correct.
The given image has been the structure of the carbon dioxide. There has been the two oxygen atoms that has been linked with the central carbon atom.
The molecules have been consisted of equal number of valence electrons, thus the structure has been causing lesser extent of the distortion. The symmetrical structure has been consisted with the linear symmetry.
Thus, the image has been consisted of the linear molecule with two domains. Thus, option B is correct.
For more information about the linear molecule, refer to the link:
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3. Which of these displacement reactions will produce the most energy?
a) Iron oxide with Aluminium
b) Magnesium and copper oxide
c) Magnesium and silver nitrate
Iron oxide with Aluminium is the displacement reaction which will produce the most energy and is denoted as option A.
What is Thermite reaction?
This is the reaction between Iron oxide and Aluminium and is characterized by large release of energy during combustion.
This is because of the large difference in reactivity between both of them during the displacement reaction.
Read more about Thermite reaction here https://brainly.com/question/14964571
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List the protons, neutrons, and electrons for Ge2+
Please hurry
Answer:
32, 30 and 41
Explanation:
The problem here is to find the number of:
Protons, neutrons and electrons in Ge²⁺
In this ion,
We must understand that for a net positive charge to remain on an atom, the number of protons must be greater than the number of electrons.
Ge is Germanium with atomic number of 32;
So the number of protons is 32
Since the atom has lost two electrons;
Number of electrons now is 32 - 2 = 30
Number of neutrons is 41 from the periodic table.
Which element is used as the trendsetter element?
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, trendsetter elements can be described as the element in which other elements are compared to as regards to a particular property; this could be as a result of the element's distinct and absoluteness of such property or as a result of the element's neutrality of such property. For example, in the electrochemical series, hydrogen can be described as the trendsetter element because hydrogen as a standard reduction potential (E°) of 0.00, thus elements above hydrogen in the series are positively charged while those below hydrogen in the series are negatively charged.
Which of the following is(are) the reason(s) metals are good conductors of heat and electricity? Select all that apply
Answer: The question is incomplete and the options are not given but here are the options.
a. Metals can absorb more heat flow than other elements before damage occurs.
b. Particles of metallic structure begin to vibrate faster as they absorb energy.
c. Metals have a larger number of freely moving electrons.
d.Metals have high densities.
e. Metals have high melting points.
The correct options are c,d and e.
c. Metals have a larger number of freely moving electrons.
d.Metals have high densities.
e. Metals have high melting points.
The correct options are c,d and e.
Explanation:
Metals are real good conductor of heat because of the following;
Metals have larger number of freely moving electrons and these electrons move in random motion that is they are not stable, they from from place to place. Current generated in a direction is destroyed by current produced in another direction also.
Metals have high densities which is because their crystal lattice are packed very tight in the metallic structure making the metal bond to be stronger and conduct heat.
Metals have high melting point because that have a very strong metallic bond and this bond require a lot of energy to break, therefore making it to conduct heat and electricity.
pls help bc this is due at 3:30pm
Answer:
No picture :(
Explanation:
The photo shows nervous tissue.
What is the main function of nervous tissue?
o
A. To transport materials and defend the body
B. To cover the body to protect other cells
C. To send signals to control the body
D. To contract to cause movement in the body
Answer:
The answer is c( to send signals to control the body)
Answer:
c. To send signals to control the body.
Explanation:
. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning..
Please help solve this ASAP
Answer: i'd prolly say (e)
Explanation: if you ignore the letters and pay more attention to the symbols and numbers you can see that adding 18 to 2 makes 20 which is not an exponent and the 40 and 4 that are exponents put together makes 44 as dumb as it sounds it was a reasonable purpose behind it hope i did something
please help asap!! will give brainliest if right.
A student listed the characteristics of chemical and nuclear reactions.
Chemical and Nuclear Reactions:
X - Changes the identity of the element
Y - Does not change the identity of the element
Which of these statements best explains the identity of Reaction X?
It is a nuclear reaction because the identity of elements changes when there is a change in the number of protons and neutrons.
It is a chemical reaction because the identity of elements change when there is a change in the mass of the atoms involved.
It is a chemical reaction because the identity of elements change when there is a change in the overall energy of the system.
It is a nuclear reaction because the identity of elements change when there is a change in the number of outermost electrons.
Answer:
1st answer is right
Explanation:
nuclear reaction takes place when number of proton or neutron changes in a nucleus forming new products
for eg uranium goes nuclear reaction and gives thorium
Answer:
It is a nuclear reaction because the identity of elements changes when there is a change in the number of protons and neutrons.
Explanation:
the other guy needs a brainliest
Please help Question is due in a few minutes
Answer:
D
Explanation:
becuase is is a good conductor electronically and it is ductile meaning you can make it into wire and that is helpful for circuts.
What period and group (number and name) is Selenium in?
Answer:
Group 16 Melting point 220.8°C, 429.4°F, 494 K
Period 4 Boiling point 685°C, 1265°F, 958 K
Explanation:
What would be the correct answer please help!
Answer:
first number is the correct answer
4. The compound iron sulfide can be formed by
filtering b. evaporating c. heating
d. mixing
a.
Answer:
heating :))))))))))))))
Explanation:
the same as the last answer i posted... sorry it just came up in my recommended questions to answer
What is the benefit of substrate channeling? The PDH active site forms in the hydrophobic core of the complex instead of a surface‑exposed region. Reaction intermediates move to sequential active sites faster than the diffusion constant. Every intermediate or product made by the PDH complex enters the citric acid cycle as a substrate. The PDH complex sequesters excess substrate to use at later time. Intermediates of a multistep reaction sequence do not dissociate from the enzyme complex.
Answer:
Intermediates of a multistep reaction sequence do not dissociate from the enzyme complex.
Explanation:
Substrate channeling is the process in which intermediates produced in an enzymatic reaction is transferred to another enzyme or active in a reaction pathway without the substrate having to dissociate from the enzymes active sites into the reaction medium or solution.
Benefits of substrate channeling include:
intermediates of a multistep reaction sequence do not diffuse away from the catalytic sites of enzymes in the pathway thereby ensuring that their concentration remains highthere is greater control of the flow metabolites in the pathwayother competing enzymes for a common substrate do not make use of the substrates increased efficiency of the catalytic processSubstrate channeling is observed in the pyruvate dehydrogenase complex reaction which oxidizes pyruvate to acetyl-CoA.
A que se le considera un modelo atómico
Answer:
kjdbfskfgshfk skjdbfsk dskjbf dskjbsd dkvhsf akb
Explanation:
Answer:
modelo de Bohr
Explanation:
En el modelo de Bohr del átomo, los electrones viajan en órbitas circulares definidas alrededor del núcleo. Las órbitas están etiquetadas por un número entero, el número cuántico n. Los electrones pueden saltar de una órbita a otra emitiendo o absorbiendo energía.
The illustration above depicts a spring being compressed and then released. Changes in both potential and kinetic energy occur
during this process. Which statement most accurately describes the changes in potential or kinetic energy?
A)
the kinetic energy is continually increasing throughout the entire process
B)
the potential energy is continually increasing throughout the entire
process
C)
the potential energy is increasing through steps A & B, then decreases at C.
D)
the potential energy is decreasing through steps A, B, & C and then
increases
Answer:
C)
the potential energy is increasing through steps A & B, then decreases at C.
Explanation:
Identify whether this statement has kinetic or potential energy, both, or neither
“The energy stored in an object due to its position (or height).”
Answer:
Neither
Explanation:
Kinetic, or potential energy, is the average amount of molecules in a substance
This is the space surrounding the nucleus that has an overall negative charge___________. Atom Neutrons Nucleus Electrons Electron cloud Valence electrons Quarks Protons Shells
Answer:
Electron cloud
Explanation:
In an atom, the nucleus contains neutrons and protons. Electrons surround the nucleus.Protons are positively charged while electrons are negatively charged.The space in which electrons are located is called an electron cloud. Because this region is composed only of electrons and empty space, it has an overall negative charge.
