Answer:
3p6 3d4
Explanation:
3d will come after 3p => 3p 3d
p will hold maximum of 6 electrons while d will hold maximum of 10 electrons.
if there are 8 more electrons to 3p2, then 4 will fill 3p so it will become 3p6
then the other 4 will fill 3d to become 3d4
How does the adaptations of a giraffe help survive its environment
Answer:
"They drink water when it is aivailable but can go weeks without it, they rely on morning dew and the water content of their food". they can use plants as resources to live.
CONCLUS Your conclusion will include a summary of the lab results and an interpretalion of the results. Please answer al questions in complele sentences using your own words Using two to three sentences, summarize what you investigated and observed in this lab What I observed in this lab was what materials to use for different things. I also learned how to make things sturdier. 2 What building malerial did you use to build your house? My house is made.autof brick and/or clay brick and wood. 3 Did your results support or fail to support your hypotheses? Type Here IN 4 What were the densities of the malerials you chose for the was ond floor for the home in Thy Worlar Type Here Why do you think a building material's density is important when building homes or architectural structures? Type Here Why wouldn't you choose wood or aluminium for the lalches on your house? Type Here Help Improve Office Notes
Answer:
Here’s the answer
Explanation:
1. Calculate the frequency and the energy of light that has a wavelength of 568 cm
2. Calculate the frequency and the energy of light that has a wavelength of 726 cm
3. Calculate the frequency and the energy of light that has a wavelength of 482 cm
4. Calculate the frequency and the energy of light that has a wavelength of 879 cm
5. Calculate the frequency and the energy of light that has a wavelength of 167 cm
6. Calculate the frequency and the energy of light that has a wavelength of 572 cm
Answer:
Please find the answers to the frequency and energy to each question below
Explanation:
Using the formulas;
λ = v/f
E = hf
Where;
λ = wavelength (metres)
v = speed of light (2.998 × 10^8 m/s)
f = frequency (Hz)
E = Energy of photon (J)
h = Plancks constant (6.63 × 10^-34 J.s)
1.) λ = 568cm = 5.68m
f = v/λ
f = 2.998 × 10^8 ÷ 5.68
f = 0.5278 × 10^8
f = 5.278 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 5.278 × 10^7
E = 34.99 × 10^(-34+7)
E = 3.499 × 10^-26 J
2). λ = 726cm = 7.26m
f = v/λ
f = 2.998 × 10^8 ÷ 7.26
f = 0.413 × 10^8
f = 4.13 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 4.13 × 10^7
E = 27.38 × 10^(-34+7)
E = 2.74 × 10^-26 J
3). λ = 482cm = 4.82m
f = v/λ
f = 2.998 × 10^8 ÷ 4.82
f = 0.622 × 10^8
f = 6.22 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 6.22 × 10^7
E = 41.24 × 10^(-34+7)
E = 4.124 × 10^-26 J
4). λ = 879cm = 8.79m
f = v/λ
f = 2.998 × 10^8 ÷ 8.79
f = 0.341 × 10^8
f = 3.41 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 3.41 × 10^7
E = 22.61 × 10^(-34+7)
E = 2.26 × 10^-26 J
5). λ = 167cm = 1.67m
f = v/λ
f = 2.998 × 10^8 ÷ 1.67
f = 1.795 × 10^8
f = 1.795 × 10^8 Hz
E = hf
E = 6.63 × 10^-34 × 1.795 × 10^8
E = 11.9 × 10^(-34+8)
E = 1.19 × 10^-25 J
6). λ = 572cm = 5.72m
f = v/λ
f = 2.998 × 10^8 ÷ 5.72
f = 0.524 × 10^8
f = 5.24 × 10^7 Hz
E = hf
E = 6.63 × 10^-34 × 5.24 × 10^7
E = 34.74 × 10^(-34+7)
E = 3.474 × 10^-26 J
How did you use the tools in the sim that helped you decide if the atom had a positive, negative, or 0 charge?
Answer:
The atomic number on the Periodic Table will tell you how many protons are in the nucleus of each atom.
Explanation:
number of electrons and protons should be equal in a neutral atom. Because each electron has a -1 charge, and each proton a +1 charge, the number of each must be the same for the net charge to equal zero.
assuming that the rock did not contain any pb-206 at the time of its formation, how old is the rock? uranium-238 decays to lead-206 with a half-life of 4.5 billion years. express your answer in years to two significant figures. view available hint(s)
If the rock did not contain any lead-206 at the time of its formation, we can use the half-life of uranium-238 to determine its age. Since the half-life of uranium-238 is 4.5 billion years, this means that half of the uranium-238 in the rock would have decayed into lead-206 after 4.5 billion years.
To determine the age of the rock, we can use the formula for radioactive decay: Age = (t1/2 * ln(1 + D/P)) / ln(2) where: - Age is the age of the rock in years - t1/2 is the half-life of the decaying element (4.5 billion years for uranium-238) - D is the amount of the daughter product (lead-206) present in the rock - P is the amount of the parent element (uranium-238) remaining in the rock - ln is the natural logarithm
If we assume that all of the lead-206 in the rock was produced by the decay of uranium-238, then we can calculate the age of the rock by dividing the amount of lead-206 by the amount of uranium-238 that has decayed into lead-206.
Without knowing the specific amounts of uranium-238 and lead-206 in the rock, we cannot provide an exact answer. However, we can say that the age of the rock is likely in the range of billions of years, based on the half-life of uranium-238.
However, to calculate the age, we need the ratio of lead-206 (D) to uranium-238 (P) in the rock. Please provide the ratio of lead-206 to uranium-238 in the rock, and we can proceed with the calculation.
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How many atoms are present in 1 molecule of
C6H12?
a.
6
b.
12
c.
18
d.
36
Answer:
C. 18
Explanation:
This is because 6+12 = 18
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out?
25°C
2 atm
Pt
Answer:
2atm symbol can be used to indicate the pressure at which a chemical reaction is carried out
Skepticism is important in this scenario because it would help him to learn from the investigations of his colleagues. Ask future questions related to the investigation. Communicate his results at a conference. Ensure that his conclusion is supported by evidence.
Answer:
hello your question is incomplete below is the missing part of the question
A biochemist performs an experiment to study the behavior of water molecules near proteins. He concludes that water molecules occur in groups of five in the presence of proteins.
answer : Ensure that his conclusion is supported by evidence.
Explanation:
Skepticism during the conduction of an experiment is an act/trait that a scientist possess that will make him/her repeat an experiment for the purpose of verifying the data gotten from the previous experiment
hence the answer to the question is to Ensure that his conclusion is supported by evidence.
Water is added to liquid isopropanol (a polar liquid) to form a solution of rubbing alcohol. Describe what happens on the molecular level as the water dissolves in the isopropanol. Select the correct step order from the drop-down menu for each step listed. The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water. The water molecules spread evenly throughout the solution. The water molecules are carried into the solution. The isopropanol molecules surround the water molecules.
Isopropanol molecules are attracted to water at the surface and surround them. The water gets carried in and gets spread evenly in the solution.
What is the mechanism of water dissolution?A solution is formed when the water and the isopropanol get mixed and dissolved. Isopropanol is a polar solute that dissolves the water molecule in it to form a solution.
The polar molecules of the isopropanol get attracted towards the polar water molecules and start surrounding the water molecules.
The water molecules get carried in the isopropanol in the solution and get evenly dispersed in the solution.
Therefore, water and isopropanol form the solution.
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Answer:
The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water.
✔ 1
The water molecules spread evenly throughout the solution.
✔ 4
The water molecules are carried into the solution.
✔ 3
The isopropanol molecules surround the water molecules.
✔ 2
Explanation:
The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water.
✔ 1
The water molecules spread evenly throughout the solution.
✔ 4
The water molecules are carried into the solution.
✔ 3
The isopropanol molecules surround the water molecules.
✔ 2
List 15 - 20 Vocabulary words about volcanoes the movie Dante’s Peak.
Answer:
magma. molten rock in the earth's crust.
volcanology. the branch of geology that studies volcanoes.
caldera. a large crater caused by the violent explosion of a volcano.
earth tremor. a small earthquake.
volcano. a fissure in the earth's crust through which gases erupt.
Mid-Atlantic Ridge.
hot spring
erupt.
Explanation:
thats all i got nice tanjiro pfp
Answer:
magma
molten rock in the earth's crust
Volcanic Eruptions
Art:In an eruption of a volcano, magma (liquid rock) may flow from vents as a liquid called lava.
volcanology
the branch of geology that studies volcanoes
Studying Volcanoes
Volcanology is the branch of geology that focuses on volcanoes.
caldera
a large crater caused by the violent explosion of a volcano
Video:Crater Lake is located within a huge volcanic caldera in the Cascade Range of southwestern Oregon.
earth tremor
a small earthquake
Many volcanologists work in observatories, from which they keep track of earth tremors and other signs of volcanic activity.
volcano
a fissure in the earth's crust through which gases erupt
A volcano is an opening in Earth's crust.
Mid-Atlantic Ridge
a very long narrow elevation on the ocean floor that runs all the way from Iceland in the North Atlantic to Bouvet Island in the South Atlantic
This type of volcano is common along the Mid-Atlantic Ridge, a mountain chain under the Atlantic Ocean.
hot spring
a natural spring of water at a temperature of 70 F or above
Hot Springs, Geysers, and Fumaroles
Hot springs, geysers, and fumaroles are other types of volcanic activity.
erupt
start suddenly
When a volcano erupts, hot gases and melted rock from deep within Earth find their way up to the surface.
eruption
the sudden occurrence of a violent discharge
Volcanic eruptions may be very destructive.
volcanic
relating to eruptions of gas and lava from the earth's crust
Volcanic eruptions may be very destructive.
Crater
a faint constellation in the southern hemisphere near Hydra and Corvus
Video: Crater Lake is located within a huge volcanic caldera in the Cascade Range of southwestern Oregon.
hot spot
a place of political unrest and potential violence
They form at “ hot spots” in Earth's crust.
geyser
a spring that discharges hot water and steam
Hot Springs, Geysers, and Fumaroles
Hot springs, geysers, and fumaroles are other types of volcanic activity.
lava
rock that in its molten form issues from volcanos
Volcanic Eruptions
Art:In an eruption of a volcano, magma (liquid rock) may flow from vents as a liquid called lava.
fissure
a long narrow depression in a surface
This material may flow slowly out of a fissure, or crack, in the ground, or it may explode suddenly into the air.
geothermal
of or relating to the heat in the interior of the earth
This energy, called geothermal energy, is difficult for people to control.
crater
a bowl-shaped geological formation at the top of a volcano
A crater, or bowl-shaped pit, usually lies at the top.
meter
a basic unit of length (approximately 1.094 yards)
The birth of a volcano was witnessed between 1943 and 1952, when a smoking hole in a Mexican farmer's cornfield erupted into a new mountain called Paricutín that eventually stood 1,400 feet (425 meters) above the level ground around it.
cascade
a small waterfall or series of small waterfalls
Video:Crater Lake is located within a huge volcanic caldera in the Cascade Range of southwestern Oregon.
molten
reduced to liquid form by heating
Molten rock rises between the plates as they move apart.
sea level
level of the ocean's surface
Within a few years it built up to an area of 1 square mile (2.5 square kilometers), with a peak more than 560 feet (170 meters) above sea level.
liquid
fluid matter having no fixed shape but a fixed volume
Volcanic Eruptions
Art:In an eruption of a volcano, magma ( liquid rock) may flow from vents as a liquid called lava.
Explanation:
yw have a nice day
A 33.9g sample of lead is placed in a graduated cylinder containing 20.0mL of water.
The lead sinks to the bottom. If the density of lead is 11.4g/cm³, what will the final
volume read on the graduated cylinder?
The correct answer for the final volume read on the graduated cylinder = 4.72 ml ^3 .
density of lead is 11.4g/cm³,
quantity of water = 20.0 mL = 20 gram
sample of lead = 33.9 g
density = mass / volume
total mass = 20+ 33.9 = 53.9
volume = mass/ density
volume = 53.9/ 11.4
volume = 4.72 ml ^3
Graduated cylinders are long, slender vessels used to measure liquid volumes. They are not meant to be mixed, stirred, heated, or weighed. Graduated cylinders typically range in size from 5 mL to 500 mL. It is a tall narrow container with a volume scale used specifically for measuring liquids. These 100 mL glass graduated cylinders are used to accurately and easily measure and dilute liquids! These class-A, lab-quality graduates are built to deliver precise measurements while resisting breakage and a wide range of chemicals. A plastic volume marker is included.
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How are monosaccharides and polysaccharides structurally different? *NO PLAGIARISM PLS*
Explanation:
Monosaccharides are simple carbohydrates that cannot be further hydrolyzed to simpler carbohydrates. They contain between three and six carbon atoms per molecule.
Polysaccharides are complex carbohydrates . They are condensation polymers derived from very long chains of monosaccharide units.
Structurally, polysaccharides are made up of repeating units of monosaccharides.
A significant amount of methane (CH4) is trapped underground or under marine sediments as Select one: a. methane hydrates. b. liquid methane. c. inorganic carbon. d. natural gas.
Methane is found under the ground or under marine sediments as natural gas which is mined along with crude oil.
Methane is an alkane and has the formula CH4. It is most commonly used as fuel. Methane is the gas that has been renowned as being responsible for explosion in coal mines.
Methane is found under the ground as natural gas which is mined along with crude oil. Large deposit of natural gas is found in many countries in Asia, Africa and the middle east.
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The size of an atom generally increases down a group and from right to left across a period. up a group and from left to right across a period. down a group and from left to right across a period up a group and from right to left across a period. up a group and diagonally across the Periodic Table. Which set shows the correct resonance structures for SeO_2? SeO_2 does not have a resonance structure. Which of the following ions doesn't have the same electronic configuration noble gas? Cl_- N^3+ S^2- So^3+ None of the above The bond length of 1.27 Angstrom, what is the dipole moment in debayes, if the charges on H and Cl were +1 and -, respectively? 4.79 D 1.63 D 6.08 D 1.08 D None of the above What is the estimation of the delta H (Bond dissociation energy change) for the following gas phase reaction? CHBr_2 + Cl_2 rightarrow CBr_3Cl + HCl D(C-H) = 413kj, D(Cl-Cl) = 242 kJ, D(C-Cl) = 328 kJ, D(H-Cl) = 43kJ.
Size of an atom increases as we move down a group and from left to right across a period
Define an atom?
An atom is a unit of matter that specifically characterizes a chemical element. One or more negatively charged electrons surround the core nucleus of an atom, which is made up of all of them. One or more protons and neutrons, which are comparatively heavy particles, can be found in the positively charged nucleus.
In a group, as the atomic number rises, the atomic size expands from top to bottom. Valence electrons are located farther from the nucleus because there are more filled energy levels, which increases atomic size.
Atomic size grows as a function of period number, number of shells, and so forth. Since there are more electrons in each shell as we move from left to right in a period, the force of attraction between the nucleus and electrons, which have positive charges, is stronger, bringing the shells closer to the nucleus and shrinking the size of the atom.
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If the average volume of 1 m&m is 6.36x10-7 m3, how much volume will a mole of m&ms occupy in m3?
A mole of M&Ms will occupy approximately 3.82992x10¹⁷ cubic meters of volume.
The volume of one M&M is given as 6.36x10⁻⁷ m³. To find the volume occupied by a mole of M&Ms, we need to know the Avogadro's number, which is approximately 6.022x10²³ mol⁻¹.
The number of M&Ms in a mole can be calculated using Avogadro's number. Therefore, one mole of M&Ms will contain 6.022x10²³ M&Ms.
To find the total volume occupied by a mole of M&Ms, we can multiply the volume of one M&M by the number of M&Ms in a mole.
(6.36x10⁻⁷ m³) * (6.022x10²³ M&Ms) = 3.82992x10¹⁷ m³
Therefore, a mole of M&Ms will occupy approximately 3.82992x10¹⁷ cubic meters of volume.
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The period of a simple pendulum of length 1m on a massive planet is 1 sec. What is the acceleration due to gravity on that planet?
The acceleration due to gravity on the massive planet is 39.48 m/s².
How do we calculate?The period (T) of a simple pendulum is given by:
T = 2π√(L/g),
where L is the length of the pendulum and g is the acceleration due to gravity.
In this scenario, we are given that the period of the pendulum (T) is 1 second and the length of the pendulum (L) is 1 meter.
So, substituting these values into the equation:
1 = 2π√(1/g)
Simplifying this equation :
g = (4π²) / (1²)
g = 4π² m/s²
g ≈ 39.48 m/s²
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Which substance in the table below will heat up the fastest? water helium diamond or glass
Answer:
Helium will heat up the fastest
Explanation:
What is the density of Iodine gas at 2.36 atm and 65.0 °C?
A) 0.026 g/L
B) 0.046 g/L
C) 21.6 g/L
D) 38.3 g/L
Answer:
C
Explanation:
The gas equation can be written as PV = nRT, where
T is in kelvin, so 65 + 273 = 338K
P = 2.36 atm
Mass of Iodine gas = 254 g
R = 0.0821 (gas constant)
So,
P = (2.36*254)/(0.0821*338) = 21.63 g/L
"The density of iodine gas at 2.36 atm and 65.0 °C is 21.63 g/L."
What is density?
A substance's density will be its mass per unit volume. The most common symbol for density is D.
The formula of density can be written as:
D= P×MW/RT
where, P is pressure, MW is molecular weight( MW of iodine is 254) and R is gas constant( 0.082).
Now, put the value of given data in above equation.
D= 2.36×254/0.082×338= 21.63 g/L.
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A forensic scientist is attempting to identify a type of plastic found at a crime scene. What test could she conduct on the plastic to observe its chemical properties?
Break the plastic into pieces
Dissolve the plastic in water
Add acid to the plastic to see if it reacts
Observe the plastic under a microscope
The chemical properties could be obtained by adding acid to the plastic to see if it reacts.
What are chemical properties?Chemical properties are those properties that could only be observe when a substance undergoes chemical change. In this case, a chemical change could also be called a chemical reaction.
A substance could be said to undergo a chemical reaction if there is a rearrangement of the atoms of the compound. This would ultimately lead to the formation of a new substance.
Now the forensic scientist wants to know the chemical properties of the plastic. This could be done by reacting the plastic with acid.
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Answer:
The short answer is (C) Add acid to the plastic to see if it reacts
Explanation:
Got it right on my quiz.
What is the standard enthalpy of formation? A) The enthalpy of the reaction that creates a molecule from its raw elements at standard state B) The enthalpy of a molecule in its reference form at standard state C) The enthalpy of a molecule in its liquid form at standard state
The standard enthalpy of formation is the enthalpy of the reaction that creates a molecule from its raw elements at standard state. The correct answer is (A).
The standard enthalpy of formation is the enthalpy change that occurs when one mole of a compound is formed from its constituent elements in their standard states at a specified temperature and pressure. It is a measure of the thermodynamic stability of the compound and is usually expressed in units of kilojoules per mole.
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Calculate the number of moles in 32 g of Na2SO2
Answer:
.355mol
Explanation:
\(?mol=32g * \frac{1mol}{90.1g}\)
Method is dimensional analysis
Cancel out units until you have your answer unit
calculate the number of moles in positive and negative ions in 1.75 moles of calcium fluoride quizlet
CaF₂ ⇒ Ca²⁺ + 2F⁻
1.75 1.75 3.5
Toner particles are composed mostly of _______________, which allows them to be melted to the page.
Select one:
a. carbon
b. power
c. plastic
d. Teflon
Toner particles are composed mostly of plastic, which allows them to be melted to the page. The option c is coorect.
The plastic used in toner particles is typically made from a type of polyester called styrene-acrylic. This plastic has a low melting point, which allows it to be melted by the heat of the printer and fused to the paper.
In addition to plastic, toner particles may also contain carbon black, which is used to give the toner its black color.
Other colors of toner may contain different pigments to produce the desired color. Overall, the plastic composition of toner particles plays a crucial role in the printing process, allowing the toner to adhere to the page and produce high-quality prints.
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What common property do solids and liquids have
Answer:
Solids and liquids are both condensed phases. This means that their atoms, molecules or ions touch.
Explanation:
HELP ME PLEASE Using the group and period numbers, Identify the elements that are located in each of the following locations. a. The element in group 10 and period 5 = b. The element in group 15 and period 4 = c. The element in group 2 and period 3 = d. The element in group 18 and period 6= e. The element in group 1 and period 7 =
Answer:
a: palladium or Pd
b: arsenic or As
c: magnesium or Mg
d: radon or Rn
e: francium kr Fr
Explanation:
i looked at the periodic table haha
a. The element in group 10 and period 5 is palladium or Pd. b. The element in group 15 and period 4 is arsenic or As. c. The element in group 2 and period 3 is magnesium or Mg. d. The element in group 18 and period 6 is radon or Rn. e. The element in group 1 and period 7 is francium or Fr.
What is an element ?A chemical element is a species of atoms, including the pure substance made entirely of that species, that have a specific number of protons in their nuclei. Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules.
A substance is considered to be an element if it cannot be reduced to a less complex form. They can be identified by their particular atomic number. The periodic table groups the elements according to their atomic number and draws attention to those with related qualities.
Each element's atom contains a specific number of protons. For instance, a carbon atom has six protons compared to the one proton in a hydrogen atom. Ions are created by changing the number of electrons in an element's atom.
Thus, The element in group 10 and period 5 is palladium or Pd.
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Can anybody help me with this?
The correct order of the given elements above in their increasing atomic radii are as follows:
Phosphorus CobaltRutheniumOsmiumGalliumWhat is meant by the atomic radius of an element?The atomic radius of an element is one periodic properties of elements which describes the total distance between the center of the nucleus of an element to the outermost shell of an electron.
From the task given above, the atomic radii values of the elements in the problem above are: Phosphorus ( 98pm ), Cobalt ( 152pm ), Ruthenium ( 178pm ), Osmium ( 185pm ) and finally Gallium which is 187pm.
That being said, below are some few examples of periodicities which is seen in elements in the periodic table:
Melting and boiling pointIonization energyElectron affinityElectronegativityElectrical and thermal conductivityIonic sizeIonic radiusIn conclusion, the atomic radius and atomic size are both periodic properties of elements.
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Suppose you had a 3-volt battery to light a lamp with a resistance of 30 ohms. Calculate the current of the circuit.
Proteins The average molecular weight of an amino acid residue in a polypeptide is 110. What is the approximate molecular weight of the following proteins?
a. Insulin (51 amino acids )
b. Myosin (1750 amino acids )
The average molecular weight of an amino acid residue in a polypeptide is 110. The approximate molecular weight of insulin, which has 51 amino acids, is 5610 kDa, and the weight of myosine, which has 1750 amino acids, is 192500.
What is the molecular weight of a protein?Protein is made up of amino acids, and each amino acid has an individual molecular weight of 128 kDa, but when they make the polypeptide chain, each amino acid loses one molecule of water. Due to the loss of one water molecule, the molecular weight of each amino acid in a polypeptide chain is 110.
Hence, the weight of the insulin is 5610 kDa, and the weight of the myosine is 192500 kDa.
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What are the three basic forms of matter?
Answer:
Solid, Liquid, and Gas!
Explanation:
please guys help me with number 1
Answer:
Paracetamol
Formula
C8H9NO2