Answer:
Cl⁻
Explanation:
The chlorine ion Cl⁻ is the most similar to Argon from the given choices.
Argon is an element with 18 electrons.
It is a noble gas and so does not readily combine with other atoms.
Now,
For an atom to be similar to argon, it must have the same number of electrons which is 18.
Cl⁻ is a chloride ionIt has gained one electron to its initial 17 electrons thus making the number 18 The net charge is a negative ion.21. Why are radioactive nuclei unstable?
a. There is not the proper neutron to proton ratio resulting in a stable nucleus
b. There is too much energy stored in the bonds between atoms
C. They need to gain/lose electrons to have a full valence energy level
d. Protons reverse their charges and begin to repel one another
Answer:
a. There is not the proper neutron to proton ratio resulting in a stable nucleus
Explanation:
Radioactive nuclei are unstable because they do not have a proper neutron to proton ration that can result in a stable nucleus for them.
Every atomic nucleus has specific neutron to proton ratio. The ratio ensures the stability of the nucleus. Any nucleus with a neutron/proton combination different from its stability ratio will be unstable and split into one or more other nuclei. This is usually with an attendant emission of small particles of matter and electromagnetic ionizing radiation and energy.Which best describes the colors of visible light? Group of answer choices Red light has the longest wavelength and highest energy. Red light has the highest energy, and violet light has the longest wavelength. Violet light has the highest energy, and red light has the longest wavelength. Violet light has the longest wavelength and highest energy.
Answer:
Violet light has the highest energy, and red light has the longest wavelength
Explanation:
The correct answer would be that violet light has the highest energy, and red light has the longest wavelength.
Among the visible light rays, red has the shortest wavelength while violet has the longest. There is an inverse relationship between the energy and the wavelength of a wave. Hence, red light with the longest wavelength would have the lowest energy while violet light with the shortest wavelength would have the highest energy.
Volatility and vapor pressure are ________. Volatility and vapor pressure are ________. not related directly proportional to one another both independent of temperature the same thing inversely proportional to one another
Answer:
directly proportional to one another
Explanation:
Volatility refers to how quickly a substance changes from liquid to gas.
If a substance has a high vapour pressure, the substance is highly volatile. Similarly, if a substance has a low vapour pressure, then the substance is much less volatile.
This implies that volatility and vapour pressure gives a direct proportionality.
Which type of seismic wave can move through solid layers of the earth but not through
the liquid outer core?
Oh
Answer:
S - waves
Explanation:
Secondary s-waves are elastic waves and they are part of the earliest waves that reach are seismic station.
Both P and S -waves are the first set of waves to reach a seismic station after an earthquake event.
P waves are primary waves and they move through any kind of earth materials. They transmitted longitudinally. S - waves are secondary waves. These waves are shear waves and they cannot be propagated through liquids.A 1.5 M solution of NaOH was made in a laboratory. If the solution made had a volume of 4.5 L, how many grams of NaOH were added?
Answer:
270g
Explanation:
Given parameters:
Concentration of solution = 1.5M
Volume of solution = 4.5L
Unknown:
Mass of NaOH added = ?
Solution:
Concentration is the number of moles of solute found in a solution.
To solve this problem, we need to find the number of moles of NaOH first;
Number of moles = concentration x volume
Number of moles = 1.5 x 4.5 = 6.75moles
Now, to find the mass of NaOH;
Mass of NaOH = number of moles x molar mass
Molar mass of NaOH = 23 + 16 + 1 = 40g
Mass of NaOH = 6.75 x 40 = 270g
I wont graduate. Why can light be treated like a particle?
Answer:
maybe "A" but I'm not sure
Light can be treated like a particle becuase it comes in chunks of energy called photons.
Particle nature of lightLight exists in dual form, as wave and particle. Light can exist as a wave becuase it transfer energy from one point to another.
Light can also exist as particle becuase it consists of packs of energy known photons.
Thus, we can conclude that, light can be treated like a particle becuase it comes in chunks of energy called photons.
Learn more about particles here: https://brainly.com/question/6503851
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A Chalcogen and an Alkali metal would come together to form a
compound with a ratio of... Note: the ratio must represent the proper order
in which the elements would combine to form the compound*
Answer:
2:3
Explanation:
pls make me brainliest
Balance the equation below
Fe,
Fe+
02
What is a nonpolar bond?
Answer:
Nonpolar covalent bonds are a type of bond that occurs when two atoms share a pair of electrons with each other. These shared electrons glue two or more atoms together to form a molecul
Explanation:
A sample of oxygen gas at a pressure of 0.656 atm and a temperature of 27.2 °C, occupies a volume of 10.7 liters. If the gas is allowed to expand at constant temperature to a volume of 13.1 liters, the pressure of the gas sample will be ______ atm.
Fill in the blank.
Answer:
The correct answer is 0.536 atm.
Explanation:
The formula to use to solve the given question is,
P1V1 = P2V2
Based on the given information, the initial pressure (P1) of the oxygen gas is 0.656 atm, the initial volume (V1) is 10.7 L. The new volume (V2) given is 13.1 L, there is a need to find the new pressure of the gas (P2).
Now putting the values in the above equation we get,
0.656 atm * 10.7 L = P2 * 13.1 L
P2 = 0.656 atm*10.7 L/13.1 L
P2 = 0.536 atm
A gas sample occupies 2.1 L at a pressure of 101 kPa.
What volume will it occupy if the pressure is increased to 235 kPa?
A. 4.9 L
B. 1.6L
C. 1.2 L
D. 0.9 L
Answer:
D) 0.9 L
Explanation:
At constant temperature,
PV = Constant
so,
P1.V1 = P2. V2
101 × 2.1 = 235 × V2
V2 = 0.9 L
Answer:
0.9L
Explanation:
Given parameters:
Initial volume = 2.1L
Initial pressure = 101kPa
Final pressure = 235kPa
Unknown:
Final volume = ?
Solution:
The relationship is between pressure and volume. To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".
Mathematically;
P₁V₁ = P₂V₂
P₁ is the initial pressure
V₁ is the initial volume
P₂ is the final pressure
V₂ is the final volume
Now insert the parameters and solve;
2.1 x 100 = 235 x V₂
V₂ = 0.89L
if water were a non-polar
Molecule
Answer:
Water would not be able to transport nutrients -‐-‐ in plants, or in our bodies -‐-‐ nor to dissolve and transport waste products out of our bodies. ... Cohesiveness, adhesiveness, and surface tension: would decrease because without the +/-‐ polarity, water would not form hydrogen bonds between H20 molecules.
how much energy is required to change 110 grams of steam at 181 C to 40 C
Answer:
Q = -64893.84 J
Explanation:
Given data:
Mass of steam = 110 g
Initial temperature = 181 °C
Final temperature = 40°C
Energy released = ?
Solution:
Energy will released in this process because temperature is going to be decreased.
Specific heat capacity of water is 4.184 J/g.°C
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 40°C - 181 °C
ΔT = -141°C
Q = 110 g × 4.184 J/g.°C × -141°C
Q = -64893.84 J
What effect would lowering the temperature have on this reaction?
3H + N
2NH3 + energy
Answer:
B
Explanation:
Answer: H2 and M2 would react to produce more NH3
Explanation:
A mixture of amino acids (written as M) was tested against five known amino acids (written as 1 to 5) and the chromatogram was made. Which amino acids are found in the mixture M?
I can’t see the picture
Explanation:
Can someone help me please I’m giving the brainliest
10.A certain ion of an atom possesses 16 neutrons, a mass number of 31 and a charge
of-3, this ion then contains:
A. 19 protons
B. 13 electrons C. 12 electrons D. 18 electrons
Answer:
B. 13 electrons
Explanation:
Bcoz protons are the same with electrons and the neutrons too.
Write the information obtained from solubility curves.
Explanation:
The solubility curve helps us to compare the solubility of difference substances at same temperature. It gives the idea that solubility changes with the temperature. The solubility curve helps us to predict which substance will crystalize out first from hot solution containing two or more solutes.
What is the complementary DNA sequence to A-T-T-G-C-A?
Answer:
T-A-A-C-G-A or just TAACGA
Explanation:
A=T
G=C
C=G
T=A
This is the answer key to all complementary DNA strands.
Hope this helps you out.
which period of the periodic table is completely made up of elements with no known stable ions?
Answer:
I think the answer is period 7
Explanation:
The period in periodic table, in which no stable ions of elements exists is 7th period. They contains actinides.
What are actinides?Actinides are 7th period elements classified to F block of periodic table. A periodic table contains vertical columns called groups and horizontal rows called periods. Each elements are classified into suitable groups based on their similarity in properties with other group elements.
There are four blocks in periodic table which are s, p, d and f block. S block elements are metals and d block contains transition metals and p block have non metals including gases and metalloids.
Actinides are f- block metals. All the elements in the period are radioactive. That's why they don't have a stable isotope or ion. They continuously undergo radioactive decay by the emission of charged particles.
Hence, the period containing unstable elements is 7th one.
To find more about actinides, refer the link below:
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Eggs turn into omelet physical or chemical