What happens in a chemical reaction and what does it require
Answer: i need a pic of it plz
Explanation:
plx
Two reindeer are winding through the winter forest . They spot three owls ,two foxes and four bear . How many legs are there in total?
Answer:
40
Explanation:
8 + 8 + 8 + 16
ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
For each of the following processes that show the formation of ions, complete the process by indicating
the number of electrons that must be gained or lost
to form the ion. Indicate the total number of electrons in the ion, and in the atom from which it was
made.
a. Al S Al3 d. F S F
b. S S S2 e. Zn S Zn2
c. Cu S Cu f. P S P3
77. For each of the following atomic
Answer:
ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
For each of the following processes that show the formation of ions, complete the process by indicating
the number of electrons that must be gained or lost
to form the ion. Indicate the total number of electrons in the ion, and in the atom from which it was
made.
a. Al S Al3 d. F S F
b. S S S2 e. Zn S Zn2
c. Cu S Cu f. P S P3
77. For each of the following atomic
Explanation:
ILL GIVE BRAINLIEST I NEED THE ANSWER RIGHT AWAY PLEASE SOMEONE
For each of the following processes that show the formation of ions, complete the process by indicating
the number of electrons that must be gained or lost
to form the ion. Indicate the total number of electrons in the ion, and in the atom from which it was
made.
a. Al S Al3 d. F S F
b. S S S2 e. Zn S Zn2
c. Cu S Cu f. P S P3
77. For each of the following atomic
0.500 L of a gas is collected at 2911 MM and 0°C. What will the volume be at STP?
Answer:
V₂ = 1.92 L
Explanation:
Given data:
Initial volume = 0.500 L
Initial pressure =2911 mmHg (2911/760 = 3.83 atm)
Initial temperature = 0 °C (0 +273 = 273 K)
Final temperature = 273 K
Final volume = ?
Final pressure = 1 atm
Solution:
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
by putting values,
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 3.83 atm × 0.500 L × 273 K / 273 K × 1 atm
V₂ = 522.795 atm .L. K / 273 K.atm
V₂ = 1.92 L
Which elements are both classified as metalloids?
Ge and As
Bi and Po
B and C
Si and P
ATP, the energy used inside a cell, is created in the Ribosomes
?true or false?
Answer:
false
Explanation:
because its made in the mitochondria
1.) Describe the two diagrams of a bottled carbonated beverage shown below as greater
pressure or lower pressure, and then as greater solubility or lower solubility. How do these two
examples illustrate the relationship between the solubility of a gas and its vapor pressure? Explain
2.) On the diagrams below, assume that each beaker contains an equal number of moles
of solute. Label each solution as concentrated or dilute. Then indicate the approximate
relative volumes of each solution by describing the surface level on each beaker.
Answer:
SEE EXPLANATION
Explanation:
If i refer to the bottle at the left hand side as A and the bottle at the right hand side as B. I can say that the bottle A contains solutes which are more soluble than the solutes in bottle B. consequently, A has a lower vapour pressure than B.
We can also see that the pressure in A is much higher than in B(as indicated by the length of the arrows). The higher the pressure, the greater the solubility of the gas. Henry's Law states that: The solubility of a gas in a liquid is directly proportional to the pressure of that gas above the surface of the solution.
Again let me call the beaker on the left A and the beaker on the right B. We can see that the beaker on the left contains 10 ml of solution while the beaker on the right contains 50 ml of solution. It follows that beaker A contains a more concentrated solution since that much amount of solute is contained in a smaller volume than in beaker B as shown in the image.
Using the data below, calculate the enthalpy for the combustion of C to CO C(s) + O2(g)--> CO2 (g) ΔH1 = -393.5 kJ CO(g) + 1/2O2(g) -->CO2(g) ΔH2= -283.0kJ Target: C(s) + 1/2O2(g) --> CO(g) ΔH3=?? Group of answer choices
Answer:
ΔH = -110.5kJ
Explanation:
It is possible to obtain enthalpy of combustion of a particular reaction by the algebraic sum of similar reactions (Hess's law). Using:
1. C(s) + O₂(g) → CO₂(g) ΔH₁ = -393.5kJ
2. CO(g) + 1/2O₂(g) → CO₂(g) ΔH₂ = -283.0kJ
The sum of 1 -2 gives:
C(s) + O₂(g) + CO₂(g) → CO₂(g) + CO(g) + 1/2O₂(g)
C(s) + 1/2O₂(g) → CO(g) ΔH = -393.5kJ - (-283.0kJ) =
ΔH = -110.5kJAt night, the demand for electricity supplied by a fission nuclear reactor decreases. How is the fission nuclear reaction controlled to avoid overproduction of electricity? The temperature of the reactor is lowered because high temperature and pressure are needed. The temperature of the reactor is raised because the reaction slows down at higher temperatures. The exposure between the fuel rods and a neutron-absorbing material is increased. The exposure between the fuel rods and a neutron-absorbing material is reduced.
Answer:
The exposure between the fuel rods and a neutron-absorbing material is increased.
Explanation:
The exposure between the fuel rods and a neutron-absorbing material is increased.
A nuclear reactor produces energy via a fission reaction. A fission reaction is a self sustaining reaction.
The nuclear fuel is bombarded with neutrons. The process produces more neutrons which continues the reaction.
In order to decrease the rate of reaction, control rods are inserted. These control rods are neutron-absorbing materials.
At night when demand for electricity decreases, the exposure between the fuel rods and a neutron-absorbing material is increased so that more neutrons are absorbed in order to decrease the rate of nuclear reaction.
Ag, CO,
Find out the stock system thank you
Answer:
a system in chemical nomenclature and notation of indicating the oxidation state of the significant element in a compound or ion by means of a Roman numeral that is used in parentheses after the name or part of the name designating this element and ending invariably in -ate in the case of an anion and that is placed. Stock nomenclature for inorganic compounds is a widely used system of chemical nomenclature developed by the German chemist Alfred Stock and first published in 1919. In the "Stock system", the oxidation states of some or all of the elements in a compound are indicated in parentheses by Roman numerals.
Explanation:
Brainliest please?
what is dark matter
can we travel faster than speed of light
what is chlorophyll
Answer:
Explaining dark matter and black holes
Here are six big questions about our universe that current physics can’t answer:
What is dark energy, the mysterious energy that appears to be accelerating the expansion of the universe?
What is dark matter, the invisible substance we can only detect by its gravitational effect on stars and galaxies?
What caused inflation, the blindingly fast expansion of the universe immediately after the Big Bang?
For that matter, what caused the Big Bang?
Are there many possible Big Bangs or universes?
Is there a telltale characteristic associated with the death of a universe?
Despite the efforts of some of the world’s brightest brains, the Standard Model of particle physics – our current best theory of how the universe works at a fundamental level – has no solution to these stumpers.
A compelling new theory claims to solve all six in a single sweep. The answer, according to a paper published in European Physical Journal C by Herb Fried from Brown University and Yves Gabellini from INLN-Université de Nice, may be a kind of particle called a tachyon.
Tachyons are hypothetical particles that travel faster than light. According to Einstein’s special theory of relativity – and according to experiment so far – in our ‘real’ world, particles can never travel faster than light. Which is just as well: if they did, our ideas about cause and effect would be thrown out the window, because it would be possible to see an effect manifest before its cause.
Alt
Explanation:
Due to travelling faster than light, dark matter has a higher than usual mass in relation to its resting mass, thus accounting for the large 'missing' mass around galaxies. ... Dark matter is therefore non-baryonic, travelling faster than light and has a mass half that of a photon...
bts army forever.....vzgGgzs0
.......JK
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In the ground state, all of the atoms of Period 3 elements have the same
Answer:
Shell number
Explanation:
8. When using the scientific notation system to express large numbers, move the_______
until____ digit(s) remain(s) to the left, then indicate the number of moves of the decimal point as the_______
9. When a measurement is recorded, it includes the_____
are certain plus one uncertain digit.
a. Major figures
b. Significant figures
c. Relative figures
d. Relevant figures
10.The ______is based on the lowest theoretical temperature, called______
a Kelvin scale, absolute zero
b. Celsius scale, absolute zero
c. Kelvin scale, boiling point of water
d. Centigrade scale, freezing point of water
Answer:
8. When using the scientific notation system to express large numbers, move the decimal until one digit(s) remain(s) to the left, then indicate the number of moves of the decimal point as the power of 10.
9. b. Significant figures.
When significant figures are used, the digits are certain plus one uncertain digit.
10. a Kelvin scale, absolute zero.
The Kelvin scale runs to absolute zero which is the lowest theoretical temperature. This measures 0 Kelvins on the Kelvin scale and −273.15°C on the Celsius scale.
The constant collisions of the moving particles of a gas with the walls of the container produce the characteristic called
Answer:
Pressure
Explanation:
Apply the definition of pressure to this problem.
Answer:
energy or pressure
Explanation:
What is used to determine the number of each atom in an ionic formula
Answer:
The charge carried by each ion (oxidation state of each atom)
Explanation:
If we have an ionic compound and we want to write its formula, we must first know the magnitude of charge on each ion (shown as oxidation state of the atoms involved) because the magnitude of charge on each ion is eventually crisscrossed and gives the subscript (number of atoms) for each atom in the formula.
For instance, let us write the formula of calcium bromide. Ca has a charge of +2 while Br has a charge of -1. If we exchange the charges and ignore the signs such that the crisscrossed charges form subscripts we can now write; [tex]CaBr_{2}[/tex].
Which diagram shows an element?
What is potential energy?
Answer:
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
Explanation:
In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
the process by which alkanoic acid reacts reversibly with alkanols is known as what?
Answer:
esterification process
HELP PLEASEE I WILL GIVE BRAINLIEST
Classify each characteristic according to whether it is true for an amoeba, a clock, or both.
Answer:
Amoeba: reproduces
clock: lacks genetic material
both: has defined boundary, use energy, and have an internalized organization.
Explanation:
Amoeba is a single cell organism known as amoeboid which is a eukaryotic cell and has all the eukaryotic features such as membrane-bound organelles including the nucleus. The nucleus contains the genetic material of the amoeba cells and which is transferred to the offspring by reproduction. The cell membrane is the outer boundary of the cell use energy to perform its cellular functions.
A clock is a non-living thing that contains many small parts to make it work properly and requires energy to work. It is not a living thing so does not have genetic material. However, it has a defined boundary in it.
What is responsible for the blue sky?
Answer:
well for me it's
Explanation:
The reflection of the seas
What happens to the molecules as water freezes? A. The water molecules stop moving B. The water molecules move faster C. The water molecules slow down D. The water molecules react chemically to form ice molecules
Answer:A
Explanation: A
6 Which of the following would provide the best evidence that air is made of matter? A Making a small hole in a tire and measuring the amount of time it takes for it to become flat B Comparing the mass and volume of an empty balloon to the mass and volume of an inflated balloon C Measuring the temperature of the air in several rooms of varying sizes D Finding the volume of the air between marbles in a jar by pouring water over them
All bonds release or absorb the same amount of energy
true
false
A _______ is a repeating disturbance or vibration that transfers or moves energy from place to place without transporting mass. A. vacuum B. force C. medium D. wave plz HELP
Answer:
The answer is wave
Explanation:
what is the name of this molecule?
a. Ethanal
b. Ethylamine
c. Ethanoic acid
d. Ethanol
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, the correct option is option B that is Ethylamine.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. The name of given molecule is Ethylamine. The functional group that is present in the given molecule is ammine.
Therefore, the correct option is option B that is Ethylamine.
To learn more about chemical compound, here:
brainly.com/question/26487468
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Om sister
6 C
7 A
8 C
9 D
10 B
There is a photon with an energy of 4.51 x 10^-34 J. What is the wavelength of
this light? in nm
Answer:
4.4045358859215327e-17 nm
Explanation:
Hope this helped!
What are food molecules made out of?
Answer:
Most foods are made out of carbon, oxygen, nitrogen and hydrogen
Explanation:
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Limiting line of bakmer series result when electron jumps from orbit: A) 3 to 2 B) infinity to 2 C) 4 to 5 D) infinity to 1