Answers
Answer:
a. particle with two protons and two neutrons
b. high-energy photon
c. intermediate
d. highest
e. thin cardboard
Explanation:
just it
Answer:
A ✔ particle with two protons and two neutrons
B ✔ high-energy photon
C ✔ intermediate
D ✔ highest
E ✔ thin cardboard
Explanation:
Got it correct on Edge :)
Related Questions
A student is building an electrical circuit. Which material should she choose for the wires, and why?
A. A noble gas such as krypton, because its atoms are far apart and it is nearly inert
B. A nonmetal such as carbon, because its atoms have tightly bound electrons
C. A metalloid such as germanium, because only some of its atoms have mobile electrons
D. A metal such as copper, because its atoms have very mobile electrons
Answers
Answer:
d
Explanation:
Answer:
d
Explanation:
The Law of Superposition is most relevant when studying which type of rock?
A.
metamorphic
B.
granite
C.
sedimentary
D.
igneous
Answers
Answer:
Sedimentary
Explanation:
Sedimentary rock is formed when pieces of eroded earth are deposited in layers. These layers are piled upon one another, slowly pressed down into the earth, and pressurized to become rock. The Law of Superposition states that, of these layers, the younger are found on top of the older.
The Law of Superposition is most relevant when studying this type of rock: C. sedimentary.
A sedimentary rock can be defined as a rock that is typically formed as a result of the accumulation, lithification or deposition of sediments (minerals or organic particles) at or near Earth's surface.
According to Nicolas Steno, the four (4) laws of stratigraphy include the following:
Law of original horizontality.Law of cross-cutting relationships.Law of lateral continuity.Law of superposition.Steno's Law of Superposition states that within a sequence of rock layers (rock strata) in sedimentary rocks, the oldest (first) strata lies at the base (bottom) of the sequence while younger (newer) strata sit atop the older strata.
Hence, the sequence of rock layers (rock strata) in sedimentary rocks typically marks the time of deposition of each of the rock layers according to Steno's Law of Superposition.
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The indicator propyl red has a Ka of 3.3 X 10-6 . It is red at low pH and yellow at higher pH. What is the approximate pH range over which it changes color
Answers
Answer:
4.48 - 6.48
Explanation:
A pH indicator works in a better way in a range of pH = pKa ± 1. That means we need to determine the pKa of the indicator propyl red to find the range over which it change its color. That is:
pKa = -log Ka
pKa = -log 3.3x10⁻⁶
pKa = 5.48
That means the range over propyl red will change from yellow to red or vice versa is:
4.48 - 6.48
3.How does freezing and thawing break rocks apart?
A.Ice covers rock and prevents weathering.
B.Water expands when it freezes, pushing rocks apart.
C.When ice thaws it pushes rocks apart.
D.Water filters through sand.
Answers
Because when you freeze water is expands
((50 BRAINLY POINTS))
Guys I really need your help on this! It's timed!
Answers
Answer:
its only 25
Explanation:
Compute the reactance of a 0.450 H inductor at the frequency of 60.0 Hz. Express your answer in ohms.
Answers
Answer:
169.67Ω
Explanation:
This question is asking for the inductive reactance, which is calculated as follows:
X(L) = 2πfL
Where;
X(L) = inductive reactance (Ω)
f = frequency (Hz)
π = 3.142
L = inductance (Henry)
Given the information provided, f = 60Hz, L = 0.450H
X(L) = 2πfL
X(L) = 2 × 3.142 × 60 × 0.450
X(L) = 6.284 × 60 × 0.450
X(L) = 6.284 × 27
X(L) = 169.668
X(L) = 169.67Ω
yeha so i went to ther e htctct
Answers
Answer:
hi
Explanation:
hi
hi
hi
hi
hi
hi
hi
hi
hi
hi
you cool
and what is this about?
how do people other than chemists use the periodic table in real life?
Answers
Answer:
The periodic table is important because it is organized to provide a great deal of information about elements and how they relate to one another in one easy-to-use reference. The table can be used to predict the properties of elements, even those that have not yet been discovered.
1. Consider the reaction of magnesium metal with hydrochloric acidity produce magnesium chloride and hydrogen gas. If 36.03g of magnesium and 55.10g of hydrochloric are reacted , how many grams of hydrogen gas are produced?
2. How many magnesium chloride are formed from the previous reaction?
Answers
Answer:
Mass magnesium chloride produced = 71.88g
Mass of hydrogen gas produced = 1.51 g
Explanation:
Given data:
Mass of magnesium = 36.03 g
Mass of HCl = 55.10 g
Mass of hydrogen gas produced = ?
Mass of magnesium chloride produced = ?
Solution:
Chemical equation:
Mg + 2HCl → MgCl₂ + H₂
Number of moles of Mg:
Number of moles = mass/molar mass
Number of moles = 36.03 g/ 24.3 g/mol
Number of moles = 1.48 mol
Number of moles of HCl:
Number of moles = mass/molar mass
Number of moles = 55.10 g/ 36.5 g/mol
Number of moles = 1.51 mol
Now we will compare the moles of hydrogen and magnesium chloride with HCl and Mg.
Mg : H₂
1 : 1
1.48 : 1.48
HCl : H₂
2 : 1
1.51 : 1/2×1.51 = 0.755
Mass of hydrogen:
Mass = number of moles × molar mass
Mass = 0.755mol × 2 g/mol
Mass = 1.51 g
Mg : MgCl₂
1 : 1
1.48 : 1.48
HCl : MgCl₂
2 : 1
1.51 : 1/2×1.51 = 0.755
Mass of magnesium chloride:
Mass = number of moles × molar mass
Mass = 0.755mol × 95.211g/mol
Mass = 71.88g
- What part of the ocean absorbs a large amount of solar energy?
Answers
Answer:
artic ocean
Explanation:
What does "Telescopically" mean?
A- to communicate via phone
B- To use a telescope
C- to viee close distances
D- To see without a device
Answers
Answer:
It is b to use a telescope
Answer:
B
Explanation:
According to the nissani what can be some possible ways to save the forest of third world countries
Answers
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, there are ways to save the forest of third world countries - this includes
1) Creating of forest reserves: Wide areas of land that are still forested can still be preserved and converted to forest reserves which can prevent these areas from being deforested as a result of human activities or industrialization.
2) Government policies: Government can put policies in place to prevent people from embarking on deforestation of certain lands. This is because some parts of the third world countries still rely on wood for cooking and other sources of daily activities.
3) Replanting of deforested areas: Replanting of trees can also help third world countries in saving the forest.
Which particles are equal in number for an atom with a neutral charge?
Answers
If ·X: represents the electron-dot symbol of an element, that element could be
Answers
Answer:
The answer is b
What do we call the total kinetic energy of all the particles in a material
Answers
Answer:
thermal energy
Summary. The total kinetic energy of moving particles of matter is called thermal energy. The thermal energy of matter depends on how fast its particles are moving on average, which is measured by temperature, and also on how many particles there are, which is measured by mass.
List four observations that suggest chemical change is occurring
Answers
Answer:
Examples of Chemical Changes
Burning wood.
Souring milk.
Mixing acid and base.
Digesting food.
Cooking an egg.
Heating sugar to form caramel.
Baking a cake.
Rusting of iron.
BASED ON THE INFORMATION BELOW. CALCULATE THE MASS FOR ONE OF THESE ATOMS:
MASS OF A SINGLE CARBON ATOM:
MASS OF A SINGLE OXYGEN ATOM:
MASS OF A SINGLE HYDROGEN ATOM:
Answers
C = 12 g
O = 16 g
H = 1 g
Further explanationConservation of mass stated that
In a closed system, the masses before and after the reaction are the same
we can calculate the mass of each atom in the compound :
O in O₂ :
mass O₂ = 32
mass O = 32 : 2 = 16 g
H in H₂O
mass H₂O = 18
mass 2.H + mass O = 18
mass 2.H + 16 = 18
mass 2.H=2
mass H = 1 g
C in CH₄
mass CH₄ = 16
mass C + mass 4.H = 16
mass C + 4.1=16
mass C = 12 g
or we can use formula :
Mass of a single C :
[tex]\tt =\dfrac{Ar~C}{MW~CO_2}\times mass~CO_2\\\\=\dfrac{12}{44}\times 44=12[/tex]
Is the following equation balanced? Zn + 2HCl → ZnCl₂ + H₂
Answers
Answer:
Yes it's balanced
Explanation:
on the left side, it contains
1 zn and 2 hydrogen and 2 chlorine
while on the right side it contains
1 zn 2 chlorine and 2 hydrogen
Which of the following are membranous sacs abundant in kidney and liver cells?
a. golgi bodies
b. mitochondria
c. lysosomes
d. peroxisomes
Answers
Answer: it’s B!! :)
What functional group results when cyclopentanone reacts with ethylamine in the presence of trace acid? A) cyanohydrin B) semicarbazone C) imine D) enamine E) oxime
Answers
Which notations represent atoms that have the same number of protons but a different number of neutrons?
Answers
The atoms having the same number of protons but a different number of neutrons have been termed isotopes.
The neutrons and protons are the constituents of the nucleus. The number of protons and electrons is equal in the atom. When two different atoms have the same number of protons the species have been termed isotopes. The atomic number of the species differ that resulting in the different positions in the periodic table.
For more information about the atoms, refer to the link:
https://brainly.com/question/657632
How many electrons (total number) are in the ion, CO3(2-) ?
Select one:
a.30
b. 24
c. 32
d. 16
Answers
What is the coefficient of oxygen (O_2) in the balanced equation for the reaction written below?
Answers
Answer:
1 is your coefficient of oxygen
Explanation:
hope it helps
what is the form of light
Answers
Answer:
most likely Energy that's what I'm thinking
An element that has an electronegativity value of zero
Answers
Answer:
Noble gases
Explanation:
Noble gases
Explain the application of silver halides in darkening effect in industry
Answers
Explanation:
Silver halides are ionic crystals consisting of a regular cubic lattice of Ag and halide ions together with a small proportion of defects, such as Ag ions that have been displaced from their regular lattice position to another “interstitial” position (the Ag ions are much smaller than the halide ions), and the corresponding vacancy in the lattice.
The application of silver halides in darkening effect in industry can be seen in the production of photographic film.
What is Silver halide?This compound is usually formed when Silver reacts with an halogen under special conditions.
In photography, it is used in the production of photographic film which darkens to produce an image when exposed to light due to the effect of the compound.
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True or false, physical properties are distinguished by the way something looks, taste, smell, and feels.
Answers
Answer:
True
Explanation:
Physical properties are based on all of our five senses, so yeah
What is 7.48 torr in atm
Answers
Answer:
0.00984211
Explanation:
which of the following compounds contain an electrostatic attraction as bonds between ions?
Answers
The compounds which has one element from metal and the other from halogens or nonmetal contains an electrostatic attraction between ions.
This is because the metal atom loses electron forming positive charge on it and halogens accepted that electron forming negative charge on it so these opposite charges attract each other producing electrostatic attraction between ions.
This electrostatic attraction is only present in those compounds that have ionic bonds so we can conclude that compounds of metal and nonmetal contains an electrostatic force of attraction between ions.
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How is emission spectra produced?
Answers
Answer:
emission spectra are produced by thin gases in which the atoms do not experience many collisions (because of the low density). The emission lines correspond to photons of discrete energies that are emitted when excited atomic states in the gas make transitions back to lower-lying levels.
Explanation:
A dark-line, or emission spectrum, will be formed when light passes through a cloud or gas at a temperature lower than the temperature of the light source.
What is emission spectra ?
An atom's electrons usually are arranged in a way that keeps the atom's energy as low as possible. The atom's lowest energy state is the atom's ground state. The electrons in those atoms take up the energy and move to a higher energy level when it is given to them. Atomic electrons must move from one energy level to another in discrete steps rather than continuously because these energy levels are quantized. An atom is in an excited state when its potential energy is greater than that of the ground state. In the excited state, an atom is unstable. The energy it gained previously is released as electromagnetic radiation when it returns to the ground state.Atoms initially acquire energy. One way is to pass an electric flow through an encased example of a gas at low strain. Every gas discharge tube will glow in a unique color depending on the gas's identity because the electron energy levels are unique to each element.Atomic emission spectra, also known as line-emission spectra, could not be explained by classical theory. A ground state atom would be capable of absorbing any amount of energy rather than just discrete amounts, as predicted by classical physics. Similarly, any amount of energy could be released when the atoms relaxed back into a lower energy state. A continuous spectrum, in which all wavelengths and frequencies are represented, would emerge as a result of this.To know more about emission spectra check this:
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