Moon geological research is based on observations made using telescopes on Earth, measurements made by spacecraft in orbit, lunar samples, and geophysical data.
Oxygen (O), silicon (Si), iron (Fe), magnesium (Mg), calcium (Ca), aluminum (Al), manganese (Mn), and titanium are among the substances known to exist on the lunar surface (Ti). The most plentiful ones include silicon, iron, and oxygen. The estimated oxygen concentration is 45%. (by weight). Due to solar wind deposition, carbon (C) and nitrogen (N) seem to be present only in very small amounts.
Impact craters, associated ejecta, a few volcanoes, hills, lava flows, and depressions filled with magma are the main features of the lunar surface.
Learn more about the moon's surface here:
https://brainly.com/question/1780268
#SPJ9
1. Use the following information to answer 3 questions. When heated in a closed container in the presence of a catalyst, potassium chlorate decomposes into potassium chloride and oxygen gas via the following reaction:
2KClO3(s) → 2KCl(s)+ 3O2(g)
If 12.25g potassium chlorate decomposes, how many grams of oxygen will be release?
(A) 1.60 g (B) 3.20 g
(C) 4.80 g (D) 18.37 g
4.80 grams of oxygen will be release.
When heated in a closed container in the presence of a catalyst, potassium chlorate decomposes into potassium chloride and oxygen gas via the following reaction:
2KClO3(s) → 2KCl(s)+ 3O2(g)
mass of potassium chlorate = 12.25g
mole of KClO3 = 12.25/122.5 = 0.1 mol
2 mole KClO3 (consumed) = 3 mole O2 (produced)
1 mole KClO3 = 3/2 mole O2
0.1 mole KClO3 = 0.1*1.5 mole O2
= 0.15 mole O2
mass of O2 = 0.15 * 32 = 4.80 grams
4.80 grams of oxygen will be release.
Learn more about oxygen here:
https://brainly.com/question/13370320
#SPJ9
Water has a density or a mass per unit volume corresponding to 1.000 g/mL at
4°C. This means that one gram of water corresponds to one milliliter of volume.
Obtain the mass of a clean, dry 100-mL graduated cylinder on the electronic
balance. Add 50 mL of deionized water to the graduated cylinder and remeasure
its mass. Calculate the mass of the water by subtracting the mass of the empty
cylinder from the mass of the cylinder plus the added water. Find the density of
water by dividing the mass of water by the volume of water. Enter the values in
the following table:
Mass of the graduated cylinder plus water (9) 72.6979
Mass of empty graduated cylinder (g)
123,5469
49.161 9
Mass of water (g)
Density of watek(g/mL)
Temperature (°C)
22.39 °C
Answer:
b
Explanation:
ason solved this problem by changing 6/4 to 1.2. He then added 1.2 to 0.68 and got 1.88.
This answer is incorrect. What did he do wrong?
The density of silver is 10.49 g/cm³. What is the mass of a piece of silver with a volume of 4.83 cm³?
Density is a physical property that relates the mass of a substance with the volume occupied by the mass of the substance. The density of the substance can be used to examine the purity of the substance.
What is the name and function of this laboratory glassware
Answer: Protects your eyes from chemical splashes, Must be worn during all labs, from start to lab checkout, in which chemicals, glass or heating of substances is involved. No exceptions!!
A student uses a diagram to show the scale sizes of the planets. Which planet’s diameter would be approximately the distance across the United States?
The planet’s diameter would be approximately the distance across the United States Mercury.
What is planet mercury known for?
It is known to be the Fastest Planet as well as the one that is very close to the Sun.Mercury is one that tends to travel a lot faster than others. Mercury is seen as one that is known for being the fastest planet as well as having the shortest distance to travel around the Sun, which is about 88 days.Therefore, The planet’s diameter which would be approximately the distance of the United States is Mercury.
To learn more about planet mercury, visit: https://brainly.com/question/17827488
#SPJ9
A gas is in a flexible container (volume can change but no gas can escape) at constant pressure. If 1 liter of gas at 300 K is cooled to 100 K (and assuming that it does not condense to a liquid!), what is the volume (in liters) of the gas at 100 K?
The volume of the gas at 100K If 1 liter of gas at 300 K is cooled to 100K is 0.33L.
How to calculate volume?The volume of a gas can be calculated using the following formula:
V1/T1 = V2/T2
Where;
V1 = initial volumeV2 = final volumeT1 = initial temperatureT2 = final temperatureAccording to this question, a gas is in a flexible container. If 1 liter of gas at 300K is cooled to 100K. The volume of the gas is calculated as follows:
1/300 = V2/100
100 × 1 = 300V2
100 = 300V2
V2 = 100/300
V2 = 0.33L
Therefore, the volume of the gas at 100K If 1 liter of gas at 300 K is cooled to 100K is 0.33L.
Learn more about volume at: https://brainly.com/question/24189159
#SPJ1
Draw the structural formula for cis-1,3-dimethylcyclopentane
Aliphatic compounds, on the other hand, are organic substances whose carbon atoms link with one another in open chains, either straight or branched, as opposed to containing a benzene ring. Aromatic compounds are organic substances with a planar unsaturated ring of atoms that is stabilized by an interaction of the bonds forming the ring. As a result, the primary distinction between aromatic and aliphatic chemicals is that aromatic compounds lack a cyclic structure while aliphatic compounds have straight, branching, or cyclic structures. Additionally, while the majority of aliphatic molecules are odorless, all aromatic compounds have a sweet, pleasant fragrance.
Learn more about Aromatic compounds here:-
https://brainly.com/question/14702443
#SPJ9
Describe a chemical change using atoms and molecules?
Explanation:
In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products. In a chemical reaction, only the atoms present in the reactants can end up in the products.
Answer:
In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
Explanation:
Chemical changes occur when bonds are broken and/or formed between molecules or atoms. This means that one substance with a certain set of properties (such as melting point, color, taste, etc) is turned into a different substance with different properties.
Can somebody help me so I can give you a brain list if it right
Answer:true
Explanation:
if you change the sequence, the answer you get may be wrong.
As wind blows up the windward side, sand grains may be picked up and blown toward the top. Then grains may drop, allowing them to slip down the leeward side. What event is this describing?
1: Desertfication
2: Deposition
3: Dune movement
4: Drought of farmlands
The event described when wind blows up the windward side, sand grains may be picked up and blown toward the top is Dune movement.
What is Dune movement?
The sand mass of dunes can move either windward or leeward, depending on if the wind is making contact with the dune from below or above its apogee.
If wind hits from above, the sand particles move leeward; the leeward flux of sand is greater than the windward flux.
Thus, the event described when wind blows up the windward side, sand grains may be picked up and blown toward the top is Dune movement.
Learn more about dune movement here: https://brainly.com/question/13027240
#SPJ1
Can somebody please help me
Answer:
a
Explanation:
because this could be down to coincidences whereas the others could be explained with scientific experiments
Answer:
A
Explanation:
Must be testable - A is not
explain how the line spectrum of hydrogen atom in Lyman series is formed
Line spectrum of hydrogen atom in Lyman series is formed 'absorbs energy and gets excited'
The electron in a hydrogen atom absorbs energy and gets excited and the electron jumps from a lower energy level to a higher energy level and when it comes back to its original state, it gives out energy which forms a hydrogen spectrum and the line in Lyman series is formed by electronic transition and all the wavelengths in the Lyman series are in the ultraviolet band and this are seen in ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n = 1 where n is the principal quantum number and the lowest energy level of the electron.
Know more about Lyman series
https://brainly.com/question/6836691
#SPJ1
Which of these formulas contain 2 nitrogen atoms?
1. Co(NO3)₂
II. (NH4)₂CO3
III. (NH4)3PO4
IV. AI(NO3)3
V. NH₂NO3
Select THREE correct answers.
Answer: I, II, V
Explanation:
Billy prepares four (4) different concentrations of solutions. Which solution is
the most concentrated?
A. 35 g of salt in 100 ml of water
B. 40 g of salt in 100 ml of water
C. 50 g of salt in 100 ml of water
D. 75 g of salt in 100 ml of water
Answer: [D]: " 75 g of salt in 100 mL of water. "
____
Explanation:
By looking at the answer choices—we can tell that all 4 (four) values for the "solvent"—[in this case: "100 mL of water".].
Note: As a general rule—and at this point in our problem—
The answer would be:
The solution with the most 'concentration' of solute—per the same volume of solvent—would be the most 'concentrated' solution—
would be Answer choice: [D]: " 75 g of salt in 100 mL of water."
Note: Answer Choice: [D]—has the most solute (grams of salt)—compared with the 'other values' given in the 'other' answer choices.
→ Specifically, refer to the other answer choices:
→ " [D: 75 g] > [C: 50 g] > [B: 40 g] > [A: 35 g ] ".
____
Wishing you well in your academic pursuits—and within the "Brainly" Community" !
____
When you were young you may have had your own theory about why plants are green. Then, as you learned more, you kept ideas that were correct, but replaced ideas that were incorrect. Atomic theory also changed as scientists improved their understanding. What incorrect idea in Bohr’s understanding of the atom was replaced in later theories?
Atoms can not be divided is the incorrect idea in Bohr’s understanding of the atom.
Bohr believed that electrons circled the nucleus in orbits. According to current atomic theory, electrons don't follow predetermined routes.
Bohr believed that electrons traveled in circular paths around the nucleus, but current theory suggests that the structure of atomic electrons is more to 3D standing waves.
Bohr improved on Rutherford's atomic model. The majority of the atom's mass is concentrated in its nucleus, which we now refer to as the center of the atom, and electrons surround the positive mass in a manner to a cloud. Bohr's use of the quantification energy to explain the model was his most important contribution. According to his theories, electrons circling the nucleus have quantized potential and kinetic energies.
The Heisenberg Uncertainty Principle is first violated by the Bohr model because it assumes that electrons have a known orbit and radius. The Bohr Model is less effective at drawing diagrams of larger atoms and gives an incorrect value for the ground state orbital angular momentum.
Learn more about Bohr’s model here:
https://brainly.com/question/3964366
#SPJ9
C4H8(g)⟶2C2H4(g)
has an activation energy of 262 kJ/mol.
At 600.0 K, the rate constant, , is 6.1×10−8 s−1. What is the value of the rate constant at 820.0 K?
The value of the rate constant at 820.0 K is 0.2 s^-1
Applying the Arrhenius equation, which is...
k = Ae-Ea/RT
Applying the formula, we get
lnk2 = lnk1 - (Ea/R)(1/T2 - 1/T1)
Applying the values, we get
ln k2 = ln 6.1x10^-8 - (2.62x10^3/8.314)(1/820 - 1/600)
Calculating the value, we get...
ln k2 = -0.31
Taking power e, we get
k2 = 0.2 s^-1
Arrhenius equation relates the temperature and activation energy of a reaction.It is helpful in studying the different parameters related to reaction.Activation energy is the minimum required to attain to form the product.To learn more about the activation energy visit:
https://brainly.com/question/28384644
#SPJ1
What data would be most helpful to support the claim that the population of a certain plant is dependent on the rainfall in its habitat?
OPTIONS
The average amount of water absorbed by the roots and given off by the leaves of these plants
The amount of water retained in the soil in the area where the plants live
Rainfall amounts and number of these plants in a certain habitat over several years
The heights and number of leaves produced by these plants under different moisture conditions
Explanation:
make up some of your own signs which can warns people about the dangers of river an ocean a large snake hiding in the bush
Which of the following best describes a community?
• A. An interacting group of populations that occupy the same area
© B. A group of organisms that interbreed and have common
characteristics
• C. A group of organisms that interact with nonliving parts of the
environment
• D. All of the individuals of the same species that inhabit an
area
The following best describes a community
community is best describes as An interacting group of populations that occupy the same area
individuals of the equal species dwelling together contain a populationA network includes a doubtlessly interacting populations of different speciespopulation consists of individuals of the same species that live inside the same area, proportion the same habitat and sources, and probably interbreed with each other.A community and the nonliving elements with which it interacts is known as a ecosystemspecies is all of the populations of a particular type of organism.If a populace is experiencing exponential boom, it approach the larger the population, the faster it growsTo know more about population visit :
https://brainly.com/question/27991860
#SPJ9
HELPPP
Ferric chloride combines with water in a reversible reaction to produce ferric hydroxide and hydrochloric acid as shown.
FeCl3 + 3H₂0 Fe(OH)3 + 3HCI
Which reaction must occur at the same time as the formation of ferric hydroxide?
(1 point)
O Fe(OH)3 + 3HCI → FeCl3 + 3H₂O
O FeCl3 + 3HCI → Fe(OH)3 +3H₂O
O FeCl3 Fe + 3Cl
O 2H₂O → H₂ + O₂
Ferric chloride combines with water in a reversible reaction to produce ferric hydroxide and hydrochloric acid as shown.
[tex]FeCl_{3}[/tex] + 3H₂O → [tex]Fe(OH)_{3}[/tex] + 3HCI
The reaction which must occur at the same time as the formation of ferric hydroxide are given below .
[tex]FeCl_{3}[/tex] → Fe · + Cl ·
So , option C is correct one .
The water ionizes to hydrogen and hydroxide ions and the ferric chloride in the water ionizes to iron, or ferric and chloride ions. As a result, the solution becomes more hydrogen ion-rich than it was before the precipitation, which causes the solution to become acidic.
to learn more about ferric hydroxide please click here ,
https://brainly.com/question/24389121
#SPJ1
Answer:
The real answer is Fe(OH)3 + 3HCI - FeCl3 +3H2O
Explanation:
I took the test and this was the correct answer.
A weak acid has a molar mass of 162 g mol-1. Analysis of a 0.8821 g sample showed the composition by mass is 0.0220 g H, 0.3374 g P, and the remainder to be O. Determine its empirical and molecular formula.
Empirical
Molecular
1. The empirical formula of the weak acid is H₂PO₃
2. The molecular formula of the weak acid is H₄P₂O₆
Data obtained from the question Mass of compound = 0.8821 gH = 0.0220 gP = 0.3374 gO = 0.8821 - (0.0220 + 0.3374) = 0.5227 gEmpirical formula =? Empirical formula =? Molecular formula =?1. How to determine the empirical formulaThe empirical formula of the compound can be obtained as follow:
Divide by their molar mass
H = 0.0220 / 1 = 0.022
P = 0.3374 / 31 = 0.01
O = 0.5227 / 16 = 0.03
Divide by the smallest
H = 0.022 / 0.01 = 2
P = 0.01 / 0.01 = 1
O = 0.03 / 0.01 = 3
Thus, the empirical formula of the compound is H₂PO₃
2. How to determine the molecular formula Empirical formula = H₂PO₃Molar mass of compound = 162 g/molMolecular formula =?Molecular formula = empirical × n = mass number
[H₂PO₃]n = 162
[(1×2) + 31 + (16×3)]n = 162
81n = 162
n = 162 / 81
n = 2
Molecular formula = [H₂PO₃]n
Molecular formula = [H₂PO₃]₂
Molecular formula = H₄P₂O₆
Learn more about empirical and molecular formula:
https://brainly.com/question/18680555
#SPJ1
chemical element that has atomic number less than 58 and atomic mass greater than 135.6
A chemical element that has an atomic number less than 58 and an atomic mass greater than 135.6m is barium (atomic no. 56 and atomic mass137.13 ) and lanthanum (atomic no. 57 and atomic mass 135.6).
Give a brief introduction about Barium and Lanthanum. BariumBarium is an element with the symbol Ba and atomic number 56. It is an alkaline earth metal that is soft and silvery, and it is the fifth element in group 2. Barium is never found in nature as a free element due to its extreme chemical reactivity. Oil well drilling fluid uses barium sulfate as an insoluble ingredient. It is employed as an X-ray radiocontrast agent in a purer form to image the human gastrointestinal tract. Barium compounds that dissolve in water have been employed as rodenticides despite being hazardous.
LanthanumChemical element lanthanum has the atomic number 57 and the symbol La. It is a silvery-white, ductile, soft metal that slowly tarnishes when exposed to air. It serves as the eponym for the group of 15 related elements in the periodic table between lanthanum and lutetium, of which lanthanum is the first and prototype. The rare earth elements traditionally include lanthanum.
Learn more about elements here:-
https://brainly.com/question/6335008
#SPJ9
•) At 741 torr and 44°c, 7.10gol a gas occupy a volume of 5.40ml
what is the moler mass of the gas?
3.5 × 10^6 g
according to ideal gas equation, PV = nRT
where, p is pressure v is volume, n is mole of gas, r is gas onstant and t is temperature.
Pressure (p) = 741 Torr = 1 bar
Volume (V) = 5.40 ml= 0.0054litre
Amount of substance (n) mol = ?
Temperature (T) 44°C= 371kelvin
so by putting all values in equation. PV = nRT
= 1 × 0.0054 =n ×8.31 ×371
n ≈ 0.000002 = 2.0 × 10^-6
now, n is mole of gase,
mole = given mass ÷ molecular mass
given mass = 7.10g
molecular mass = given mass ÷ mole
7.10 ÷ 2.0 × 10^-6
= 3.5 × 10^6 g
To know more about ideal gas equation visit :
https://brainly.com/question/3637553
#SPJ9
What are the 4 parts of an atom, location and charge
Answer:
Electron,
Neutron,
Proton,
& the nucleus
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
Name 3 Rectangular Items that are something you can hold. And then name those items' Length, Width, Height, Area, or Volume.
Name 2 Triangular Items that are something you can hold. And then name those items' Length, Width, Height, Area, or Volume.
Name 3-Dimensional Rectangular Items that are something you can hold. And then name those items' Length, Width, Height, Area, or Volume.
Answer:To find the volume of a rectangular prism, we multiply the length of the prism by the width of the prism by the height of the prism.
honeslty
Explanation:
How do i solve. To get the answer need answer
The correct answer is 329.4 Cal.
Remember that specific heat is the ratio of the amount of heat needed to raise a body's temperature by one degree compared to the amount of heat needed to raise the temperature of an equivalent mass of water by one degree, or that specific heat capacity is the amount of heat energy needed to raise a material's temperature by one kelvin (K) per kilogramme.
Mass of sample=50.00-g
Specific heat of metal=0.108 cal/g °C
Change in temperature=78.0 °C-17.0°C=61.0°C
Heat Released by metal can be calculated as follows:
Heat Released = Mass of sample x Specific heat x Change in temperature
Heat Released = 50.00 g x 0.108 cal/g °C x 61.0°C
Heat Released = 329.4 Cal
To learn more about heat released refer the link:
https://brainly.com/question/18492098
#SPJ9
145 lb adult takes 200 mg tablet is equal to ug per kg
The calculated medication dose is 3.010³g/kg
Patients receive medications either as a dosage or as a single dose. These two terms have various connotations. A dosage is a set amount of medication administered all at once. It is a singular value for mass or volume. It can alternatively be described as the mass or volume of the medicine divided by the patient's body weight. A drug's dosage is the precise quantity, number, and frequency of doses given over a precise period of time.
The dose (one time) of medication for an adult patient is the subject of this question. The patient mass is given in pounds, and the drug mass is supplied in milligrams; m drug = 200 mg
145 lbs., patient
In order to respond to this query, we convert the patient's mass to kilograms and the drug mass to micrograms:
Drug = 200 mg, 10³ mg, and 2.00, 10⁵ g
145 lb patient = kg/2.20 lb = 65.9 kg
The medication dose is:
mdrug Mpatient = 2.0010⁵g/65.9kg
= 3.010³g/kg
Learn more about Medication here-
https://brainly.com/question/11098559
#SPJ9
How many moles of calcium do you have if you measure out 19.13 g of calcium?
Enter your answer in decimal form with the correct number of sig figs. Use the proper abbreviation for the units.
expaln the conductivity of magnesium
Magnesium is not a good conductor. Hence, the conductivity of magnesium is not good.
Magnesium is placed in group 2 of the periodic table. It has 2 valence electrons which are in the fully filled s-subshell. When the subshell is fully filled, the electrons are not available to move to conduct. For example, group 1 has half filled subshell which allows the electrons to move.
But, how does magnesium conduct? As its subshell is fully filled and therefore no electrons are available to move.
In group 2 metals, there is a property called s-p hybridization. The s- and p- subshells overlap so that metals can now move to the unfilled states of the p-subshell.
Hence, magnesium is not a good conductor.
To learn more about magnesium, visit: https://brainly.com/question/488824
#SPJ9
A 4.000-mL urine sample from a person suffering from diabetes mellitus has a mass of 4.007 g.
Express your answer using four significant figures.
The concentration of the urine is determined as 1.002 g/ml.
What is concentration?The concentration of a chemical substance expresses the amount of a substance present in a mixture.
What is the urine concentration?The concentration of the urine is determined from the ratio of mass to volume of the urine or density of the urine.
Urine Concentration = mass / volume
Urine concentration = 4 .007 g / 4 ml
Urine concentration = 1.002 g/ml
Thus, the concentration of the urine is determined as 1.002 g/ml.
Learn more about concentration here:https://brainly.com/question/17206790
#SPJ1
The complete question is below:
determine the concentration of the urine.
how many grams is there if you have 2.85x10^-4 with 176g/mol
0.05016 grams is there if you have 2.85x10^-4 with 176g/mol.
The mass of a certain molecule is its molecular mass, which is expressed in daltons. Because they contain various isotopes of an element, multiple molecules of the same substance can have distinct molecular weights.
mole = 2.85x10^-4
mol. weight = 176g/mol
Formula,
mole = weight taken / mol. wt of the compound
2.85x10^-4 = weight taken / 176g/mol
weight taken = 2.85x10^-4 x 176g/mol
=0.05016 grams
0.05016 grams is there if you have 2.85x10^-4 with 176g/mol.
Learn more about mole here:
https://brainly.com/question/26416088
#SPJ9