The answer is; D,
Because these rocks cool slowly, the rocks are able to form large crystals hence giving the rock a coarse texture. These crystals are big enough to be viewed with the unaided eye. The opposite is extrusive rocks that form on the surface of the earth. These cool rapidly and form fine-grained textured rocks because of the small crystals formed during the rapid cooling process.
Final answer:
Large masses of magma that cool very slowly beneath Earth's surface form igneous rocks with a coarse-grained texture, known as intrusive or plutonic rocks, such as granite.
Explanation:
When large masses of magma solidify very slowly far below Earth's surface, they form igneous rocks that have a coarse-grained texture. This slow cooling process allows large mineral crystals to grow, making them visible to the eye. These rocks are known as intrusive or plutonic igneous rocks, such as granite, which is characterized by a proliferation of light-colored minerals in a coarse-grained matrix. In contrast, rapid cooling of magma at or near the surface leads to fine-grained or glassy textures, typical of volcanic or extrusive igneous rocks, like basalt and obsidian.
In summary, the relationship between cooling rates and the grain size of minerals within igneous rocks is a key factor in their classification and subsequent geological interpretation. The development of these textures, whether coarse or fine, reflects the cooling history and mineral composition of the magma from which they are formed. Option D
If an decrease in temperature accompanies a reaction, what occurred?
I think the correct answer from the choices listed above would be the last option. If a decrease in temperature accompanies a reaction, then energy was absorbed which means that the reaction is endothermic. Hope this answers the question. Have a nice day.
Answer:
It should be endothermic reaction.
Explanation:
Because it absorbs more energy than release it.
I took the test before.
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Chemical Reactions Learning for quiz Unit 3 Lesson 2 Physics
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Most of the mass of an atom is contained in its _____. A. electrons B. protons C. nucleus D. neutrons
What is the formula for water
Formula for water? There is no formula, but there is a symbol, if that's what you meant. The symbol for water is H2O. It means 2 Hydrogen molecules, because the symbol is H. And the O stands for Oxygen. So it meands two hydrogen molecules bonded with one oxygen molecule. Hope I helped :)
Answer:
Explanation:
what do you mean do you mean H2O
How many moles of Boron (B) are in 5.03 x 1024 B atoms?
Hey there!:
Number of moles = ( number of atoms / 6.023*10²³ atoms )
given number of atoms = 5.03*10²⁴
Therefore:
Number of moles B = 5.03*10²⁴ / 6.023*10²³
Number of moles B = 8.35 moles
Hope that helps!
Arrange the molecules in order from strongest intermolecular force to weakest.
-C2H6
-C4H10
-CH4
-C3H8
Answer:- [tex]C_4H_1_0>C_3H_8>C_2H_6>CH_4[/tex]
Explanations:- Alkanes are non polar molecules as these only have carbons and hydrogens. Electron negativity difference of C and H is very low and it makes them non polar. These have weaker London dispersion forces.
The forces of attraction becomes stronger in alkanes as the number of carbon increases because the surface area as well as molecular weight of the alkanes increases with an increase in number of carbons.
Butane has four carbons, propane has three carbons, ethane has two and methane has only one carbon, So, the strongest to weakest order of inter molecular forces is butane > propane > ethane > methane .
Answer:
The answer is C4H10-C3H8-C2H6-CH4
Explanation:
100% CORRECT
What happened to the moon and earth if the sun did not exist
Anything in orbit around the Sun is basically moving fast enough to be in a constant state of freefall towards it. If the planets, for example, suddenly stopped moving they would immediately be pulled towards the Sun and fall into it.
Jena's blueberry-pineapple smoothie measured 200g and was contained in 300ml. What is it's density?
The density of Jena’s smoothie is 0.667 g/mL.
Mass = 200 g
Volume = 300 mL
Density = mass/volume = 200 g/300 mL = 0.667 g/mL
Answer:
rounded it is 0.67 g/ml
Explanation: i took the test it was a bit confusing but i figured it out
Which of the following is plotted on the y-axis of a distance versus time graph? A.Distance B.Time C.Slope. D.Velocity
Hello,
Question - Which of the following is plotted on the y-axis of a distance versus time graph?
Answer - A. Distance
Why - The reason its distance is because the fact that distance is a dependant variable and always will remian on the y axis.
Which examples demonstrate responses to stimuli? Check all that apply.
A. A Venus flytrap closes on a fly.
B. Large amounts of bacteria are present in a soil sample.
C. A plant grows toward the sunlight.
D. A rabbit has both white and black fur.
E. Bright lights cause a baby to blink.
Answer:
A.C. and E.
Explanation:
i just got it right so that's it.
A gas at constant volume has a pressure of 4.50 atm at 200. K. What will be the pressure of the gas at 250. K?
The Ideal Gas Law allows us to assume that at constant volume the variation in pressure is proportional to the variation in temperature.
Hence,
[tex]\frac{P1}{T1} = \frac{P2}{T2}\\ \\
\frac{4.50}{200} =\frac{P2}{250} \\ \\
P2 = \frac{4.50 * 250}{200}\\ \\
P2 = 5.63 atm[/tex]
Using Gay-Lussac's Law, we get [tex]P_2[/tex] [tex]5.625 atm[/tex] at [tex]250 K[/tex].
To find the new pressure of a gas at constant volume when the temperature changes, we use Gay-Lussac's Law, which states that pressure is directly proportional to temperature for a given mass of gas at constant volume. The formula for Gay-Lussac's Law is:
[tex]\frac{P_1}{T_1} = \frac{P_2}{T_2}[/tex]
Where:
[tex]P_1[/tex] is the initial pressure[tex]T_1[/tex] is the initial temperature[tex]P_2[/tex] is the final pressure[tex]T_2[/tex] is the final temperatureGiven:
[tex]P_1 = 4.50 \, \text{atm}[/tex]
[tex]T_1 = 200 \, \text{K}[/tex]
[tex]T_2 = 250 \, \text{K}[/tex]
Rearrange the formula to solve for [tex]P_2[/tex]:[tex]P_2 = P_1 \times \frac{T_2}{T_1}[/tex]
Substitute the known values:[tex]P_2 = 4.50 \, \text{atm} \times \frac{250 \, \text{K}}{200 \, \text{K}}[/tex]
Calculate:[tex]P_2 = 4.50 \, \text{atm} \times 1.25 \\ \implies P_2= 5.625 \, \text{atm}[/tex]
The new pressure of the gas at [tex]250 K[/tex] will be [tex]5.625 atm[/tex].
WILL GIVE BRAINIEST
Listed in the Item Bank are some important labels for sections of the image below. To find out more information about labels, some have more details available when you click on them. Drag and drop each label to the corresponding area it identifies in the image.
Word Bank:
Alkali Metals
Alkaline Earth Metals
Metalloid
Metals
Noble Gas
Nonmetal
Transition Metals
Explanation:
Elements of group 1 represented in the blue column are alkali metals.
Elements of group 2 represented in the peach column are alkaline earth metals.
Elements from scandium to zinc or all the elements represented in the green columns are transition metals.
Elements in coral pink boxes represent metalloids, that is, they show properties of both metals and non-metals.
Elements present in blue, peach, green and coral pink boxes are all metals.
Whereas elements present in pink, that is, group 18 are all noble gases.
And elements present in yellow boxes are all non-metals.
Please help so I can study I am also giving brainest anwer
What happens when metals and nonmetals react?
No electrons are shared or move.
Electrons move from the metals to the nonmetals.
Electrons move from the nonmetals to the metals.
Electrons are shared equally.
B. Electrons move from metals from nonmetals creating ionic compounds.
Compare the type of bonds in metalloids to metal (delocalized) and nonmetal (localized).
1) The type of bond in metalloids to metal is metallic bond.
Metallic bond is a type of chemical bond.
Metallic bond is formed between electrons and positively charged metal ions.
Metallic radius is defined as one-half of the distance between the two adjacent metal ions.
Metallic bond increace electrical and thermal conductivity.
Metals conduct heat, because when free moving electrons gain energy (heat) they vibrate more quickly and can move around.
2) The type of bond in nonmetal is covalent bond.
Nonmetals have low electrical and thermal conductivity.
an atom of gallium has 31 proton and a mass number of 70 what is the atomic number for an atom of gallium
Hello!
Atomic Number, is the number where the atom lays on the perodic table and can be found through the number of protons. Meaning that gallium has an atomic number of 31 !
Atomic weight, which is equal to 70 in this case, can be found by subtracting the atomic number from that total to find the remaining number of neutrons that make up the mass. So gallium has 31 protons and 39 protons.
Hope this helps answer your question.
Answer: The correct answer is 31.
Explanation:
Atomic number is defined as the number of protons or electrons that are present in a neutral atom.
Atomic number = number of protons = number of electrons
Mass number is defined as the sum of number of protons and neutrons that are present in an atom.
Mass number = Number of protons + Number of neutrons
We are given:
Number of protons = 31
Mass number = 70
Number of neutrons = Mass number - Number of protons = 70 - 31 = 39
Atomic number will be equal to the number of protons present in an atom which is 31
Hence, the correct answer is 31.
Which activity best demonstrates Ernest Rutherford’s creativity?
with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus.
Ernest Rutherford's most creative activity was his gold foil experiment conducted in 1909. This experiment demonstrated the structure of an atom, challenging existing models and earning Rutherford the title of 'father of nuclear physics'.
Explanation:The activity that best demonstrates New Zealand physicist Ernest Rutherford's creativity is his gold foil experiment conducted in 1909. In this groundbreaking experiment, Rutherford and his colleagues bombarded a thin sheet of gold foil with a beam of high-energy alpha particles obtained from radioactive decay of radium. He then observed the subsequent velocities and trajectories of the particles, a method that led to revelations about the nuclear structure of the atom.
Rutherford's experimental design illuminated the small and dense nature of atomic nuclei. Rutherford placed a radioactive source in a lead container, producing a beam of alpha particles that struck a thin gold foil. The scattering of the alpha particles, observed by the glow they caused when they hit a phosphorescent screen, challenged existing beliefs about atomic structure. His seminal experiments with nuclear radiation and atomic structure earned him the title of "father of nuclear physics" and helped him win a Nobel Prize in Chemistry in 1908.
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HELP PLEASE !!!!!!!!!!!
Select the electron domain geometry that results in a bent molecular shape. Check all of the boxes that apply.
linear with two atoms and zero lone pairs
trigonal planar with three atoms and zero lone pairs
trigonal planar with two atoms and one lone pair
tetrahedral with three atoms and one lone pair
tetrahedral with two atoms and two lone pairs
Answer:
D
Explanation:
Edge trust me
The electron domain geometries that result in a bent molecular shape are:
Trigonal Planar with two atoms and one lone pairTetrahedral with two atoms and two lone pairsWhat is a bent molecular shape?A bent molecular shape occurs when there are two bonded atoms and one or more lone pairs around the central atom.
A common example of a molecule with a bent shape is water. In a water molecule, the central oxygen atom is bonded to two hydrogen atoms and has two lone pairs of electrons, resulting in a bent molecular shape with a bond angle of approximately 104.5 degrees.
Thus, the shapes are;
Trigonal Planar with two atoms and one lone pair
Tetrahedral with two atoms and two lone pairs.
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What is the name of the compound CO?\
Carbon Monoxide would be the correct answer.
If the frequency of an FM wave is 8.85 × 107 hertz, what is the period of the FM wave?
Answer: The period of the FM wave [tex]1.1299\times 10^{-8} seconds[/tex].
Explanation:
Frequency of the wave = [tex]8.85\times 10^{7} Hertz[/tex]
Frequency is inverse of time period that is :
[tex]Frequency=\frac{1}{\text{Time period}}[/tex]
[tex]\text{time period}=\frac{1}{frequency}[/tex]
[tex]=\frac{1}{8.85\times 10^{7} Hertz}=0.11299\times 10^{-7} seconds=1.1299\times 10^{-8} seconds[/tex]
The period of the FM wave [tex]1.1299\times 10^{-8} seconds[/tex].
Significant figures communicate the level of precision in measurements
You are right! That is true.
you rent a car in Germany with a gas mileage rating of 12.8km/L. What is its rating in miles per gallon?
so one liter is about 2. something gallons so at 12.8 km/l you would get about 30 mpg which is insane but yeah
Answer: The mileage rating of the car is 30.05 miles per gallon
Explanation:
We are given:
Mileage rating = 12.8 km/L
To convert this level into milligrams per deciliters, we use the conversion factor:
1 mile = 1.61 km
1 gallon = 3.78 L
Converting the above rating into miles per gallon, we get:
[tex]\Rightarrow (\frac{12.8km}{L})\times (\frac{1mile}{1.61km})\times (\frac{3.78L}{1 gallon})\\\\\Rightarrow 30.05miles/gallon[/tex]
Hence, the mileage rating of the car is 30.05 miles per gallon
what are the limitations of the Klmn electronic configuration style of writing
In the KLMN electronic configuration style of writing K denotes the first shell which can hold up to two electrons, L denotes the second shell which can hold up to eight (2 + 6) or 8 electrons, M denotes the third shell which can hold up to eight (2 + 6 + 10) or 18 electrons etc.
The KLMN style of writing only indicates the number of electrons in each principal quantum number, however the spdf electronic configuration style of writing subdivides each shell into its subshells.
For instance the 3rd principal quantum number has s,p and d subshells, wherein s, p and d orbitals can have a maximum of 2, 6 and 10 electrons respectively.
How many moles are there in 24.0 grams of FeF3
Hey there!:
Molar mass FeF3 = 112.84 g/mol
Number of moles = mass of solute / molar mass
Number of moles = 24.0 / 112.84
Number of moles = 0.212 moles of FeF3
Hope that helps!
What is the name for the ocean current that brings warm water from the Gulf of Mexico to Western Europe
that is called the Gulf Stream
question answered by
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What chemical element did hennig brand discover and what was he boiling down when he discovered it
How many moles of ammonia, NH3, can be made from 7.5 moles of H2? N2 + 3H2 → 2NH3 A. 15 moles B. 22 moles C. 5 moles
The reaction will produce C. 5 mol NH₃.
N₂ + 3H₂ ⟶ 2NH₃
Moles of NH₃= 7.5 mol H₂ × (2 mol NH₃/3 mol H₂) = 5 mol NH₃
5 moles of ammonia, [tex]NH_3[/tex], can be made from 7.5 moles of [tex]H_2[/tex].
What is a mole?The mole is an SI unit used to measure the amount of any substance. The abbreviation for a mole is mol. One mole is exactly 6.02214076×[tex]10^{23}[/tex] particles.
Given data:
Moles of H₂ react = 7.5 mol
Moles of NH₃ formed =?
Chemical equation:
N₂ + 3H₂ → 2NH₃
Now we will compare the moles of ammonia with hydrogen.
H₂ : NH₃
3 : 2
7.5 : [tex]\frac{2 X 7.5}{3}[/tex] = 5
Hence, 5 moles of ammonia would be formed from 7.5 moles of hydrogen.
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Round off the measurement 0.0070857 m to three significant figures
What process uses atomic particles and uranium to determine exact age ?
the decay of the neutrons in the nucleus of the atom
The process of radiometric dating uses the decay of uranium-238 to lead-206 to determine the age of ancient rocks.
U-238 decays to stable Pb-206 largely by the emission of α particles, with a half-life of about 4.5 × 10⁹ a.
Thus, geologists can determine the age of rocks by measuring the relative amounts of U-238 and Pb-206.
However, the method is not “exact”.
The rock must be more than ten million years old so that enough uranium can decay to make the amount of lead measurable.
The age uncertainty for 100-million-year-old rocks ranges from 100 000 a
to 3 000 000 a.
The error margin for older rocks, say, 2.5 billion years old, can be as low
as 2 000 000 a. That’s a long time, but it’s an uncertainty of less than 0.1 %.
which two elements are most likely to form an ionic bond? krypton and lithium, magnesium and silicon, calcium and potassium, iodine and chlorine
The molecule CCl4 contains one double bond and three single bonds.
Answer is: false, carbon tetrachloride contains four single bonds.
Carbon tetrachloride or tetrachloromethane (CCl₄) is an organic nonpolar compound.
Electron configuration of carbon atom: ₆C 1s² 2s² 2p².
Electron configuration of chlorine atom: ₁₇Cl 1s² 2s² 2p⁶ 3s² 3p⁵.
Chlorine atoms have one unpaired electron, carbon atom is sp3 hybridized (has four unpaired electrons).
False, The molecule CCl4 contains only four single bonds.
Explanation:There are only four single covalent bonds in CCl4. One carbon atom makes 4 covelent bonds with 4 chlorine atoms.Classify the reactions as endothermic or exothermic....PLEASE HELP ASAP
1) Endothermic reactions:
a) The reaction between ammonium nitrate and water absorbs heat from the surrounding environment.
There are two types of reaction: endothermic reaction (chemical reaction that absorbs more energy than it releases) and exothermic reaction (chemical reaction that releases more energy than it absorbs).
b) Ammonium chloride dissolved in a beaker of water makes the beaker cold.
Dissolving this salt absorbs heat from beaker.
c) Water separates on hydrogen and oxygen when an electric current is run through it.
Electrolysis of water is the decomposition reaction (heat is required), because from one molecule (water) two molecules (hydrogen and oxygen) are produced. Water is separated into two molecules.
2) Exothermic reactions:
a) Three drops of concetrated sulfuric acid added to 100 milliliters in a beaker makes the beaker hot.
Energy is released, beaker absorbs that heat.
b) Uranium atoms are split to produce nuclear energy.
Nuclear energy is released.
c) Methane and oxygen are combined to produce methanol and heat.
Balanced chemical reaction: 2CH₄ + O₂ → 2CH₃OH + heat.