Answer:
B
The increase in the atomic number
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a bacterium has a length of 5.5 10-6 m but seen through a powerful microscope it appears to be 1.2 10-3 m. what is the magnification of the microscope?
a virtual image is produced by a convex mirror that is 1.60 cm from the mirror. if the magnification is 0.20 how far from the mirror is the object?
Answer:
what are the answer choices
Explanation:
Answer:
3x
Explanation:
Some atoms bond and others do not. What determines whether or not an
atom will bond with atoms of other elements?
please help
This planet has the largest temperature range in the solar system.
Mercury
Venus
O Earth
Mars
Answer: Mercury!!!!!!
Explanation:
Highs and lows. Orbiting between 28 and 43 million miles (46 and 70 million kilometers) from the sun, Mercury, also the smallest planet, feels the brunt of the solar rays. According to NASA, the tiny world suffers the most extreme temperature range of any other planet in the solar system.
Have great day!
Answer:
Mercury
Explanation:
Highs and lows. Orbiting between 28 and 43 million miles (46 and 70 million kilometers) from the sun, Mercury, also the smallest planet, feels the brunt of the solar rays.
10. Which phase of matter is likely to be compressible and show rapid diffusion?
A. Gas
B. Liquid
C. Solid
Answer:
gas
Explanation:
because gas is compressible and has a lot of free space between particles
What is the name of the ion formed from an atom with 12 protons?
Answer:
Magnesium ion
Explanation:
The name of the ion formed from an atom with 12 protons is magnesium ion.
The formula of the ion is given as:
Mg²⁺
We know this because the number of protons an atom contains can be used to identify an element.
Element with atomic number or proton number of 12 is magnesium .
when it loses two electrons, it becomes isoelectronic with Neon and it is now stable.
How many molecules are in 35.9 moles of neon gas
Answer:
5455.859420000001 Neon Gas
Explanation:
How many moles of butane do we have if we have 5.50 x 1024 molecules
of butane (CH) ?
Answer:
9.14moles
Explanation:
Given parameters:
Number of atoms of butane = 5.5 x 10²⁴atoms
Unknown:
Number of moles = ?
Solution:
To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.
6.02 x 10²³ atoms makes up 1 mole of an atom
5.5 x 10²⁴ atoms will contain = [tex]\frac{5.5 x 10^{24} }{6.02 x 10^{23} }[/tex] = 9.14moles
Write the isotope notation for an element with 12 protons and 14 neutrons.
please help me, please
Which layer in this model represents the least dense layer of the geosphere? - А B C D
Answer:
A
Explanation:
The area that represents the least dense part of the geosphere is the portion or region A.
Density is the determined by the packing of a layer.
The geosphere is the solid part of the earth Since A denotes the crust, it is the least dense part of the earth. In particular, the continental crust is the least dense part of the earth. During the differentiation of the earth, denser minerals gravitated towards the center and the lighter ones partitioned to the surface. This makes the crust the least dense portion of the earthAnswer:
the answer is A
Explanation:
a P e x
What is an advatage of buying food grown locally.
Answer:
It is most of the time cheaper and more fresh than regular store bought food.
Explanation:
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The graph represents the relationship between temperature and time as energy is removed from a sample of H2O.
Which statement correctly describes the energy of the particles of the sample during interval D–E?
Potential energy decreases and average kinetic energy increases.
Potential energy decreases and average kinetic energy increases.
Potential energy increases and average kinetic energy increases.
Potential energy increases and average kinetic energy increases.
Potential energy decreases and average kinetic energy remains the same.
Potential energy decreases and average kinetic energy remains the same.
Potential energy remains the same and average kinetic energy increases.
Answer:
C. Potential energy decreases and kinetic energy remains the same.
Explanation:
pt The crystal lattice structure of an ionic compound
A. is weak due to the interactions of the ion
B. is weak due to the independence of the ions
OC. is strong due to the interactions of the ions
D. is strong due to the independence of the ions
Answer:
D. is strong due to the independence of the ions
Explanation:
In an ionic solid, the ions are packed together into a repeating array called a crystal lattice.
The concept of crystal packing assumes that the ions are hard spheres. successive layers over it. The simplest arrangement is one in which the spheres in the base are packed side by side.The crystal lattice structure of an ionic compound is strong due to the interactions of the ions. Therefore, option (C) is correct.
What are ionic compounds?Ionic compounds can be defined as crystalline solids which are formed by closely packing ions of opposite charge due to the interactions of the ions. An Ionic compound is usually created when metal reacts with non-metal.
In ionic compounds, the ions are held together by ionic bonds due to the interactions of the ions. The ions are formed from atoms by gaining or losing electrons in order to attain their noble gas configuration.
A cation in ionic compounds refers to an electropositive ion and has the tendency to donate valence electrons. Similarly, anions in ionic compounds can be defined as electronegative ions and have a tendency to accept electrons.
In an ionic compound, there exists a large electrostatic force of attraction that forms a strong ionic bond.
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how do enzymes help with digestion
Answer: Digestive enzymes play a key role in breaking down the food you eat. These proteins speed up chemical reactions that turn nutrients into substances that your digestive tract can absorb. Your saliva has digestive enzymes in it
Explanation:
what happens to the atoms when a paper burns
Answer:
the two atoms will combine and release energy
Draw the Lewis dot structure for the compound gallium oxide with the chemical formula Ga2O3
Answer:
Refer to your periodic table. Lewis dot structures are based off the number of valence electrons an atom has.
Looking at the compounds, we can see that Gallium has three valence electrons in its outer shell and oxygen has six. Oxygen and Gallium are going to share electrons with one another, making a V shape in their diagram.
One Oxygen would make a double bond with a Gallium, leaving one valence electron to another oxygen. That oxygen takes that Final electron. It now has 7 in its outer shell. The remaining Gallium and Oxygen do the same double bond as the one before, leaving the 7 valence electron oxygen with one more electron.
The Lewis dot structure of Ga₂O₃ is shown below.
In molecular structure, Lewis structures describe the relationship between molecules' atoms and their lone pairs of electrons. Lewis structures are also used to predict molecular geometry in conjunctions with hybrid orbitals.
Ga₂O₃ is the inorganic compound of gallium (III) oxide. It is a semiconductor with a very wide bandgap. It is widely used in power electronics. It is also used in phosphors and gas sensing.
There are several polymorphs of gallium oxide. The most stable polymorph of gallium oxide is the polymorph of gallium(III)(monoclinic).
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The image for the Lewis dot structure is shown below.
What type of charging happens in the can when the balloon is bought near?
what is a solute ?
have a great day
Answer:
a dissolved substance especially or a component of a solution present in smaller amount than the solvent
Explanation:
have a good day
Answer:
A solute is a minor component in a solution, this is dissolved in the solvent.
Explanation:
14) The central iodine atom in the ICl4- ion has __________ nonbonded electron pairs and __________ bonded electron pairs in its valence shell.
Answer:
Two non bonded electron pairs and four bonded electron pairs
Explanation:
An image of the compound as obtained from chemlibretext is attached to this answer.
The ion ICl4- ion, is an AX4E2 ion. This implies that there are four bond pairs and two lone pairs of electrons. As expected, the shape of the ion is square planar since the lone pairs are found above and below the plane of the square. This is clear from the image attached.
The central iodine atom in the ICl4- ion has two (2) nonbonded electron pairs and four (4) bonded electron pairs in its valence shell.
An electron can be defined as a subatomic particle whose net electric charge is negative. A valence electron can be defined as an electron in the outer shell that can eventually participate in the formation of a chemical bond.An electron pair is a group of two electrons of a given atom or shared by two different atoms as a chemical bond.In conclusion, the central iodine atom in the ICl4- ion has two (2) nonbonded electron pairs and four (4) bonded electron pairs in its valence shell.
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1. What are three examples of Properties of Matter?
2. How are liquid, solid, and gas particles different?
Answer:
1. liquid, gas, and solid
2. Liquid, solid, and gas particles are different by volume, and shapes they take in containers. Solid is tightly packed, liquid takes the shape of anything, and gas has neither volume or shape
Explanation:
Hope this helps!
In science, Jill is learning about solids such as brass, bronze,and steel. How would she classify these materials?
A.)pure substances
B.)state compounds
C.)homogeneous mixtures
D.)heterogeneous mixtures
Answer:
A
Explanation:
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Answer:
it is c.
Explanation:
there is no explanation,l took this question before
Learning Task 3: Answer the following
separate sheet of paper.
Among the three pictures A, B, and C, which of the following will best represent:
ODUK
1. An atom? Why?
2. A cation? Why?
3. An anion? Why?
Explanation:
Picture A which shows an overall negative charge represents an anion. Anion are formed when an atom gains an electron. In doing that, the total number of electrons (negative charge) is greater than the number of protons (positive charge), hence it would have an overall negative charge.
Picture B which shows a neutral charge represents a neutral atom. In an atom, the number of electrons equals the number of protons.
Picture C which shows an overall positive charge represents a cation. Cation are formed when an atom loses an electron. In doing that, the total number of electrons (negative charge) is less than the number of protons (positive charge), hence it would have an overall positive charge.
The main sugar that is used as a reactant in cellular respiration is called
Answer:
I believe that the answer is glucose?
Explanation:
if not, tell me the answer choices and i will help u from there
what compound name is As5O2
Answer:
Arsenic pentoxide
Explanation:
2. Malachi uses some glue to fix a broken plate. He puts the glue under a desk lamp but the glue
doesn't dry. Then he puts the glue out in the sun and it dries. Why does light from the sun dry the
glue when light from the desk lamp does not?
a
Because the glue can take in energy from the light from the sun, but not from the light from
the lamp.
b
Because light from the sun pulls energy out of the glue and light from the desk lamp does
not.
с
Because the sun gives off a type of light that carries energy, and light from the desk lamp
does not
d
Because light from the sun carries heat molecules, and light from the desk lamp does not.
Answer: It’s C
Explanation:
When two atoms share six electrons with one another, what type of bond do they form?
O A. a double ionic bond
O B. a triple ionic bond
O C. a double covalent bond
O D. a triple covalent bond
Answer: The answer is D
Explanation:Covalent bonds are formed when atoms share one or more electrons. Ionic bonds are formed when one atom transfers electrons to another atom. how are bond energy and bond strength related? Please give me Brainliest
When two atoms share six electrons with one another, the type of bond do they form is: D. a triple covalent bond.
A covalent bond can be defined as a bond that exists in chemical compounds and it typically involves the sharing of electrons between the atoms of a non-metallic chemical element.
In Chemistry, there are three (3) main types of covalent bond and these include:
A single covalent bondA double covalent bondA triple covalent bondA triple covalent bond is a type of covalent bond that is formed when the two (2) atoms of a non-metallic chemical element share six electrons with one another instead of the usual two in a single covalent bond.
In conclusion, a triple covalent bond is usually stronger than the equivalent single covalent bond and double covalent bond.
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What is plate tectonics
Answer:
Plate tectonics is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of Earth's lithosphere, since tectonic processes began on Earth between 3.3 and 3.5 billion years ago.
a theory explaining the structure of the earth's crust and many associated phenomena as resulting from the interaction of rigid lithospheric plates which move slowly over the underlying mantle
The minimum amount of energy that particles must have in order to react is known as the... what?
Write a chemical equation for the dissociation of nitric acid HNO3
Answer:
I can't do that but this is the best I can do for you :(
Explanation:
Nitric acid, HNO3(aq), breaks up into ions (a cation and an anion) in a water solution.
please help I only have 5 hours left
Answer:
i think b or c
Explanation: