When rocks are subjected to high heat, high pressure, hot mineral-rich fluids, or, more typically, some combination of these variables, metamorphic rocks develop.
What are rocks?Rocks are defined as those formed from magma, a molten mixture of rock-forming minerals and typically volatiles such as gases and steam.
There are three types of rocks.
Igneous rock - They are defined as forms of rocks that occur when molten rock (rock that has been liquefied by extreme heat and pressure) cools to a solid condition.Sedimentary rock - They are defined as kinds of rock created by mineral or organic particle accumulation or deposition near the Earth's surface, followed by cementation.Metamorphic rock - They are defined as the rock developed throughout time as a result of many physical changes such as pressure, heat, and varied chemical activity. Metamorphism is the process through which existing rocks are transformed into new forms of rocks.Thus, when rocks are subjected to high heat, high pressure, hot mineral-rich fluids, or, more typically, some combination of these variables, metamorphic rocks develop.
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Choose the formula for ammonium.
ΝΗ,
b NH3
C
(NH)3N
Answer:
NH4+ will be ammonium, NH3 is ammonia which is the conjugate base of ammonium.
Explanation:
CAN SOMEONE PLEASE HELP ME I would appreciate it so much
Lab:Charles Law Data
250 ml glass of lemon juice contains 20 grams of sugar. How much sugar is in 500 ml bottle
-flemon juice?
[0.5) * BS
0.5 Points)
There is 40 g of sugar in a 500 ml bottle of lemon juice
Further explanationThe concentration of a substance can be expressed in several quantities such as moles, percent (%) weight/volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.
the concentration of sugar in lemon juice :
[tex]\tt \dfrac{20~g}{250~ml}=0.08~g/ml[/tex]
So for 500 ml juice :
[tex]\tt 500\times 0.08=40~g~sugar[/tex]
Andy rides a a speed of 8 miles per hour. How far does he ride in 3 hours?
Answer:
The answer is 24 miles.
Explanation:
Every hour he rides 8 hours. If he rides for three hours you can take 8 miles x 3 hours which is 24 miles.
The speed of the riding is 8 miles/hours . Within a time of 3 hours Andy will go for a distance of 24 miles.
What is speed?Speed is a physical quantity which measures the distance covered per unit time. The rate of speed is called velocity both having the units m/s, km/hr, miles/hr etc.
Speed is directly related to the distance covered. As the speed increases, distance covered by the object also increases. Whereas as the time increases, distance covered will decreases.
Given the speed of ride = 8 miles/s
time = 3 hours.
Distance = speed × time.
= 8 miles/ hr × 3 hours
= 24 miles.
Therefore, Andy will reach out a distance of 24 miles within 3 hours when ride with a speed of 8 miles/s.
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Which groups on the periodic table represent the s- block ?
Answer:
Groups 1 and 2.
Explanation:
The elements of Group 1 and Group 2 of the modern periodic table are called S block elements. The two types of s block elements are possible i.e. the elements with one electron (s1) or the elements with two electrons (s2) in their s-subshell.
Hi, I could really use your help. The question is Which of the products would you anticipate being formed in the least molar quantity? That is, which of the products (1, 2, or 3) is the minor product? Explain your choice. HINT: Consider the intermediates formed.
Answer:
Number 1 will be in the lowest molar quantity b/c formation of 1st order products are more difficult to form than secondary (#2) or tertiary (#3) substitution products.
Explanation:
In general, if a substitution occurs such that it is attached to a carbon that's attached to only one carbon, it is referred to as a primary carbon substitution. If a substitution occurs on a carbon that is attached to two (2) carbons, it is a secondary carbon substitution. Finally, if a substitution occurs such that it is attached to a carbon that's attached to three (3) carbons it is a tertiary substitution. Typically, primary substitution products follow an Sn2 type reaction pathway. Such requires the formation of only one intermediate that difficult to form as compared to 2° or 3° intermediates. Once formed, however, they will be very unstable and proceeds to product very quickly. Such produce very low product yield. The intermediates for 2° and 3° form more easily and are more stable in the reaction environments. An example is tertiary butyl halogens (e.g., t-butyl chloride) follow and Sn1 type reaction pathway forming a tertiary carbocation which then reacts with a nucleophile of choice and forms much higher yields than the 1° carbon substitution reactions. Suggest reviewing Sn2 and Sn1 substitution reactions.
Which root word of the binary ionic compound ends with -ide?
The metal
The positive ion
The non-metal
The group 1 element
Answer: the non metal
Explanation:
Why series fatty acid carbons seen in double from?
Organic materials are from ___________things.
A. Living
B. Dead
EASY POINTS
B trust me please ..........
Answer:
both
Explanation:
depends on what type because there is fecal material dead tissue decomposing soooo both
got the answer, so in other words, I'm good.
Answer:
Brainliest?
Explanation:
pls!!!!!
How many grams of KOH are required to prepare 500. mL of 0.450 KOH solution?
Answer:
KOH molar mass = 39 + 16 + 1 = 56g
To make 1 L of 1M soln needs 56g KOH
To make 500mL 1M needs 56/2 = 28g
To make 500mL 0.2M needs 28 x 0.2gn:
Explanation:
The weight of KOH are required to prepare 500. mL of 0.450 KOH solution is 12.6 gm
What is Molarity ?Molar concentration is a measure of the concentration of a chemical species, in particular of a solute in a solution, in terms of amount of substance per unit volume of solution.
In chemistry, the most commonly used unit for molarity is the number of moles per liter, having the unit symbol mol/L or mol/dm³ in SI unit.
Molar mass of KOH = 39 + 16 + 1 = 56g
To make 1 L of 1M soln needs = 56g KOH
To make 500mL 1M needs 56/2 = 28g
To make 500mL 0.450 M needs = 28 x 0.450
= 12.6 gm
Therefore, The weight of KOH are required to prepare 500. mL of 0.450 KOH solution is 12.6 gm.
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Please help, im really confused. ill mark brainliest
Answer:
Fossils of the same animals have been found on South America and on Africa.
Africa and South America look as if they could be fit together perfectly (they almost can!)
Explanation:
Basically, the idea is that South Africa and Africa were once the same landmass. The same animals lived in that landmass, but when they broke off, then the animals were on different continent, yet they came from the same place.
Are bonds broken or formed, throughout each phase change present on a heating
curve?
Answer:
sipi
Explanation:
at what temp does h2o melt
Answer:
32 degrees fahrenheit
Explanation:
How many moles of NH₃ can be produced from 4.81 moles of nitrogen in the following reaction:
N₂ (g) + 3 H₂ (g) → 2 NH₃ (g)
Answer:
9.62moles of NH₃
Explanation:
Given parameters:
Number of moles of nitrogen = 4.81moles
Unknown:
Number of moles of NH₃ = ?
Solution:
To solve this problem, we need to establish a balanced reaction equation:
N₂ + 3H₂ → 2NH₃
Now, we can solve the problem by working from the known to the unknown.
1 mole of N₂ produced 2 moles of NH₃
4.81moles of N₂ will produce 2 x 4.81 = 9.62moles of NH₃
For an aqueous solution of sucrose (C12H22O11), determine: (a) the molarity of 3.30 L of a solution that contains 225.0 g of sucrose M (b) the volume of this solution that would contain 4.30 mole of sucrose L (c) the number of moles of sucrose in 1.00 L of this solution mol C12H22O11
Answer:
a) Molarity = 0.199M
b) 21.6L of solution
c) 0.199 moles of sucrose in 1L
Explanation:
a) Molarity is the ratio of moles of solute (sucrose) in volume of solution (3.30L):
Moles sucrose -Molar mass: 342,3g/mol-:
225.0g * (1mol / 342,2965g) = 0.6573 moles
Molarity = 0.6573 moles / 3.30L
Molarity = 0.199Mb) 0.199M means 0.199 moles in 1L. 4.30 moles are in:
4.30 mol * (1L / 0.199mol) = 21.6L of solution
c) By definition, there are 0.199 moles of sucrose in 1L. This is the meaning of 0.199M
HOW TO CALCULATE MOLARITY:
The molarity of a solution can be calculated by dividing the number of moles of the substance by its volume. That is:Molarity (M) = no. of moles ÷ volumeQUESTION A:
Molar mass of C12H22O11 = 342.3 g/molno. of moles = 225g ÷ 342.3g/mol = 0.66molMolarity of sucrose = 0.66mol ÷ 3.30L = 0.2MQUESTION B:
Volume = no. of moles ÷ molarityVolume = 4.30 mol ÷ 0.2M = 21.5LQUESTION C:
no. of moles = molarity × volume no. of moles = 0.2M × 1Lno. of moles = 0.2molLearn more at: https://brainly.com/question/8732513?referrer=searchResults
The most useful property of metalloids is their
(A) Varying ability to conduct electric current.
(B) Softness and malleability.
(C) Tendency to be unreactive.
(D) Ability to be pulled out into long wires.
Answer:
An element is the simplest form of matter that cannot be split into simpler substances or built from simpler substances by any ordinary chemical or physical method. There are 110 elements known to us, out of which 92 are naturally occurring, while the rest have been prepared artificially. Elements are further classified into metals, non-metals, and metalloids.
Table 2.11.1: Characteristic properties of metallic and non-metallic elements:
Distinguishing luster (shine)
Non-lustrous, various colors
Nonmetals
Elements that tend to gain electrons to form anions during chemical reactions are called non-metals. These are electronegative elements. They are non-lustrous, brittle and poor conductors of heat and electricity (except graphite). Non-metals can be gaseous, liquids or solids.
Physical Properties of nonmetals:
Physical State: Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (carbon).
Non-Malleable and Ductile: Non-metals are very brittle, and cannot be rolled into wires or pounded into sheets.
Conduction: They are poor conductors of heat and electricity.
Luster: These have no metallic luster and do not reflect light
Conductivity: Poor conductors of heat and electricity
Melting and Boiling Points: The melting points of non-metals are generally lower than metals
Seven non-metals exist under standard conditions as diatomic molecules:
H2(g)
N2(g)
O2(g)
F2(g)
Cl2(g)
Br2(l)
I2(l) (volatile liquid - evaporates readily)
Chemical Properties of Nonmetals
Non-metals have a tendency to gain or share electrons with other atoms. They are electronegative in character.
Nonmetals, when reacting with metals, tend to gain electrons (typically attaining noble gas electron configuration) and become anions:
Nonmetal + Metal -> Salt
3Br2(l)+2Al(s)→2AlBr3(s)(2.11.4)
Compounds composed entirely of nonmetals are molecular substances (not ionic).
They generally form acidic or neutral oxides with oxygen that that dissolve in water react to form acids:
Physical Properties of Metalloids
State: They are all solid at room temperature.
Conduction: Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors.
Luster: Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals). It is a much poorer conductor of heat and electricity than the metals.
Solid Solutions: They can form alloys with other metals.
Chemical Properties of Metalloids
Their physical properties tend to be metallic, but their chemical properties tend to be non-metallic.
The oxidation number of an element in this group can range from +3 to -2, depending on the group in which it is located.
Trends in Metallic and Nonmetallic Character
Metallic character is strongest for the elements in the leftmost part of the periodic table, and tends to decrease as we move to the right in any period (nonmetallic character increases with increasing ionization values). Within any group of elements (columns), the metallic character increases from top to bottom (the ionization values generally decrease as we move down a group). This general trend is not necessarily observed with the transition metals.
2.10: Electron Affinities 2.12: Electronegativity
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2.2: Electron Configurations
2.3: Electron Configurations and the Periodic Table
2.4: Development of the Periodic Table
2.5: Effective Nuclear Charge
The calculation of orbital energies in atoms or ions with more than one electron (multielectron atoms or ions) is complicated by repulsive interaction...
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Explanation:
its D
Answer:
(A) Varying ability to conduct electric current.
Explanation:
The most useful property of metalloids is their varying ability to conduct electric current.
Metalloids are elements or substances that shares properties that transcends between those of a true metal and non-metal.
Based on their properties that straddles those of metals and non-metals, they find good use in electronic parts. Most importantly because they have varying ability to conduct electric current. They conduct current under certain conditions.State the type of stability of Cl- ion.
What else is produced during the replacement reaction of silver nitrate and potassium sulfate? 2AgNO3 + K2SO4 Ag2SO4 + ________
Answer:
c
Explanation:
Answer:
c
Explanation:
GIVING BRAINLIEST!
What kinds of observations can you make that might indicate a chemical change is taking place?
Color Change.
Production of an odor.
Change of Temperature.
Evolution of a gas (formation of bubbles)
Precipitate (formation of a solid)
Hope this helps!:)
An atom is defined as the smallest part of an element that...?
Answer:
takes part in a chemical reaction
Explanation:
An atom is defined as the smallest part of an element that takes part in a chemical reaction.
When chemicals react, they simply exchange their atoms and recombine to form compounds where the atoms inside of them have a stable configuration.
In a chemical reaction, atoms are not broken down to simpler forms. Chemical reactions do now break down atoms. By losing, sharing or gaining of electrons, atoms simply form compounds and molecules.which type of experiment follows ethical standars?
A.Releasing contaminated waste into water system?
b. perfoming test on animals when the information can be obtained in other ways?
c. doing research on animals in which the animal experiences to fear or pain.
d. perfoming tests on people who cannot protect themselfs?
Answer:
A.Realesing contaminated waste into the water system
Explanation:
because if you you try it would really work
in a closed system as the temperature of a liquid increases the vapor pressure of the liquid
In Rutherford's Gold Foil Experiment, he discovered ? O neutrons O Protons O nucleus O electrons 4 5
Answer:
Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.
Acetylene gas is often used in welding torches because of the very high heat produced when it reacts with oxygen gas, producing carbon dioxide gas and water vapor. Calculate the moles of oxygen needed to produce 0.095 of carbon dioxide. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
Answer:
0.12 mol O₂
Explanation:
Step 1: Write the balanced combustion reaction
C₂H₂ + 2.5 O₂ ⇒ 2 CO₂ + H₂O
Step 2: Establish the appropriate molar ratio
We want to know the moles of oxygen needed to produce 0.095 moles of carbon dioxide. The molar ratio of O₂ to CO₂ is 2.5:2.
Step 3: Calculate the moles of oxygen needed to produce 0.095 moles of carbon dioxide
0.095 mol CO₂ × 2.5 mol O₂/2 mol CO₂ = 0.12 mol O₂
Water contains 2 polar bonds and the molecule is polar
True
False
An average human body has 84.0 g of chlorine (as chloride ions) in it. If the average mass of a human body is 70.0 kg, what is the concentration of chlorine in ppth?
Answer:
[tex]ppth=1.2ppth[/tex]
Explanation:
Hello!
In this case, since the parts per thousand of a solute in a solute is defined in terms of its grams per kilogram of solution (unlike parts per million which are mg/kg) we can mathematically represent it via:
[tex]ppth=\frac{grams_{solute}}{kg{solution}}[/tex]
Now, since the whole human body acts as the solution and the chlorine in the form of ions as the solute, the required ppth turns out:
[tex]ppth=\frac{84.0g}{70.0kg}\\\\ppth=1.2ppth[/tex]
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The initial concentration of reactants in a first order reaction is 0.27 M. The rate constant for the reactio is 0.75 s^-1. What is the concentration of reactants after 1.5sec?
Answer:
Final concentration = 0.019 M
Explanation:
Initial Concentration [A]o = 0.27M
Rate constant, k = 0.75 s^-1
Final concentration [A] = ?
Time, t = 1.5s
The relationship between the variables is given by the equation;
ln[A] = ln[A]o - kt
ln[A] = ln(0.27) - (0.75)(1.5)
ln[A] = - 1.309 - 1.125
ln[A] = - 2.434
[A] = 0.019 M
What best describes the reactants and products in a reaction at equilibrium?
more reactants form than products
they form at equal rates
more products form than reactants
they form equal amounts
Answer: they form at equal rates
Explanation:
By definition, at equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction.
Which three types of reactions yield a product that is a chemically bonded combination of reactants? replacement, polymerization, decomposition polymerization, decomposition, oxidation decomposition, synthesis, replacement oxidation, synthesis, polymerization
Answer:
oxidation, synthesis, polymerization
Explanation: I took the test
The three types of reactions are product that is a chemically bonded combination of reactants are oxidation, synthesis, polymerization
A chemical reaction is often described as when two or three elements are combined together to form a compound. The product of oxidation, synthesis, polymerization are simply said to chemically bonded because they are composed of different reactants (elements) that are combined together to form another.Conclusively, we can therefore say that the three types of reactions are product that is a chemically bonded combination of reactants are oxidation, synthesis, polymerization
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