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How many moles of chlorine gas are contained in 9.02 x 1023 molecules?
List the protons, neutrons, and electrons for Ge2+
Please hurry
Answer:
32, 30 and 41
Explanation:
The problem here is to find the number of:
Protons, neutrons and electrons in Ge²⁺
In this ion,
We must understand that for a net positive charge to remain on an atom, the number of protons must be greater than the number of electrons.
Ge is Germanium with atomic number of 32;
So the number of protons is 32
Since the atom has lost two electrons;
Number of electrons now is 32 - 2 = 30
Number of neutrons is 41 from the periodic table.
In the reaction below, how would adding more of reactant A affect the equilibrium of the system? (2 points)
A + B ⇄ C + D
a
Shift it to the right toward the products.
b
Shift it to the left toward the reactants.
c
Equally create more products and reactants.
d
It would have no effect.
Answer:
a . Shift it to the right toward the products.
Explanation:
In the reaction, if more of the reactant A is added to the system, the reaction will shift towards the products.
If a system at equilibrium is disturbed by changing the concentration of one of the substances, all the concentration will change until a new equilibrium point is reached. If we add more reactants, the concentration is increased and the reaction shifts to the right so as to maintain the constancy of the equilibrium constant.Answer: a . Shift it to the right toward the products.
Explanation:
example of neutral outcome ?
Answer:
drops a glass cup of water outcome mad parents
Explanation:
Mad pagents mean death no surviva.
PLZ HELP FAST BRANILIST IF RIGHT
Wegener found the fossilized remains of a reptile and a plant on different continents which are now separated by thousands of miles of ocean. The reptiles and plants could not have possibly crossed the oceans. What kind of evidence is this an example of? *
A climate
B puzzle
C fossil
Answer:
Climate?
Explanation:
A German scientist who proposed the theory of continental drift ... Land reptile fossil located on multiple continents; evidence of continental drift ... climate evidence. Tropical plant fossils found on an island in Arctic Ocean, and glacier deposits ... Lystrosaurus (fresh water reptiles) found in places now separated by oceans
One way that steel makers can keep steel from rusting is to coat it with zinc metal. If the
workers combine excess steel (FeNiO,) and 75.00g of zinc, how much coated steel (ZnFeNiO)
should they be able to make?

Answer:
225.4 g
Explanation:
The equation of the reaction is;
Zn(s) + FeNiO(s) ------> ZnFeNiO(s)
Since FeNiO is in excess then Zn must be the limiting reactant.
Molar mass of Zn = 65.38gmol-1
Number of moles of Zn reacted = 75g/65.38gmol-1 =1.15 moles
If 1 mole of Zn yields 1 mole of ZnFeNiO
1.15 moles of Zn yields 1.15 moles of ZnFeNiO
Mass of ZnFeNiO produced= 196gmol-1 * 1.15moles = 225.4 g
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Answer:
D
Explanation:
I did this assignment.
Answer:
D
Explanation:
The greenhouse effect is caused by the atmospheric accumulation of gases such as carbon dioxide and methane, which contain some of the heat emitted from Earth's surface. This radiation, unlike visible light, tends to be absorbed by the greenhouse gases in the atmosphere, raising its temperature.
Is a CAS number a physical or chemical property
Global Positioning System signals can tell you
Answer:
GPS use satellites and receivers to determine location. GPS can be used to find exact location, and relative location, so how far away you are from somewhere else. It can also give coordinates and directions.
which number indicates the energy level of an atoms valence electrons
In the reaction A+B → C + D, what are the reactants?
O A. A and B
O B. A and C
C. Just B
O D. C and D
Answer:
A. A and B
Explanation:
The reactants in this reaction is A and B;
Reaction:
A + B → C + D
In a chemical reaction, the left hand side is made up of the reactants.
On the right hand side, we have the products
For the example given;
A and B are the reactants
C and D are the products
How many mg is 76.0 kg? Express your answer in scientific notation. Use the ^ symbol before the exponent, eg 1x10^3
Milligram and kilograms are two common units of mass. one milligram is 10⁻⁶ kg. Hence, 76 Kg is 76 × 10⁶ mg.
What is mass?Mass of a substance is the measure of its total amount. The standard unit of mass is grams (g). Mass is an extensive property which is dependant on the amount of particles in it.
There are several units of expressing mass, like gram, milligram (mg), kilogram (kg), nanogram (ng), etc. They can be interchanged between each other by certain relations.
Milligram unit is generally used to express the doses of drugs and small quantities.
One milligram = 10⁻⁶ kilograms.
Hence, 1 kg = 10⁶ mg
Therefore, 76 Kg is 76 × 10⁶ mg.
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select the correct word or phrase to complete the statements about ionic compounds. The melting point of an ionic compound is likely to be _____ a molecular compound
Answer:
1. Higher than
2. Soultion and the liquid state
3. hard
4. Have varying solubilities
Explanation:
Ionic bond is a type of intermolecular force formed between a metal and non metal by losing electrons from the metal. The correct phrase which complete the statement is "higher than" a molecular compound.
What is melting point?Melting point is the temperature at which a substance converts to liquid state from solid state where both the phases are in equilibrium. Melting point of a compound depends on the bond type, purity, mass etc.
Ionic compounds are formed between a metal and non metal of higher electronegativity. Metals are electron rich and thus are able to donate electrons to an electronegative atom.
Non- metals such as O,N, halogens forms ionic bond with metals, Ionic bond are strongest of all bond types. Therefore, its very hard to break. As well the ionic network is hard to disorder because they have perfect crystal lattice structure.
To melt a compound the intermolecular attraction have to be reduced in order to liquify the compound. Ionic bond is strong and more thermal energy have to be applied to weaken the bond.
Hence, melting point of ionic compounds is likely to be higher than molecular compounds.
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HELP PLEASE THIS IS CONFUSING
Number of moles = 8.3 x 10⁻¹³
Further explanationThe mole is the number of particles(molecules, atoms, ions) contained in a substance
1 mol = 6.02.10²³ particles
Can be formulated
N=n x No
N = number of particles
n = mol
No = Avogadro's = 6.02.10²³
5 x 10¹¹ atoms of Silver :
[tex]\tt mol=\dfrac{5\times 10^{11}}{6.02\times 10^{23}}=8.3\times 10^{-13}[/tex]
Why is the supply of oil in Texas decreased from its supply fifty years ago? A. Oil is a nonrenewable resource B. Oil is a renewable resource C. Oil takes sixty years to replenish itself. D. Oil wells are no longer being dug.
Answer:
A
Explanation:
The supply of oil in Texas decreased from its supply fifty years ago because oil is a nonrenewable resource.
A nonrenewable resource is one that cannot be replenished naturally at the same pace as its usage and hence, decreases and eventually gets exhausted with usage or exploitation over time. This is unlike renewable energy resource that gets replenished even with usage.
The more the oil in Texas is exploited, the more its supply or reserve will decrease. This is why the supply of oil has decreased from what it is fifty years ago.
The correct option is A.
Fluorine has 7 valence electrons. How many more electrons does it need to acheive a full outermost energy level
a
1
3
Ob
Oc
O d
10
2
What is created when rocks bend due to the compression of tectonic plates?
Faulting
Subduction
Folding
Whipping
Answer:
folding
Explanation: google told me
Answer: Folding
Explanation:
I took the quiz and i used my notes
How many electrons does a gallium atom give up when it becomes an ion?
Answer:
3 electrons
Explanation:
What would be the correct answer please help!
Answer:
first number is the correct answer
Most rocks are made of what elements?
oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium
quartz, granite, marble, limestone, shale, sandstone, obsidian, mica
carbon, hydrogen, rubidium, nickel, zink, copper, lead, gallium
lithium, nitrogen, selenium, fluorine, chlorine, antimony, gallium, tin
Answer:
A. oxygen, silicon, aluminum, iron, calcium, sodium, potassium, magnesium
Explanation:
How would frictional force be affected in space?
Answer:
when two surfaces rub together in outer space, there will be friction. Friction is a surface effect and doesn't depend upon there being air. There is also a force like air resistance from the very sparse gas in space, but it will be very, very small, since space is a very good vacuum.
Explanation:
Explain why naturally occurring minerals in rocks often have a visible crystalline structure.
The photo shows nervous tissue.
What is the main function of nervous tissue?
o
A. To transport materials and defend the body
B. To cover the body to protect other cells
C. To send signals to control the body
D. To contract to cause movement in the body
Answer:
The answer is c( to send signals to control the body)
Answer:
c. To send signals to control the body.
Explanation:
. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning..
What is the correct formula for carbon ( II ) oxide
Answer:
CO
Explanation:
Carbon(ii) oxide is CO, carbon monoxide. Carbon(iv) oxide is CO2, carbon dioxide. Carbon dioxide, CO2, is caused by the complete burning of any substance containing carbon
The correct formula for the compound carbon (II) oxide is CO.
The formula of a compound is a representation of the types and numbers of atoms present in a chemical substance. It shows the chemical symbols of the elements involved and indicates the ratio of atoms in the compound.
The subscripts in the formula represent the number of atoms of each element in a molecule or unit of the compound. For example, the formula of water is H₂O, indicating that it consists of two hydrogen atoms (H) and one oxygen atom (O) bonded together.
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A brick is resting on a smooth, level surface. A student applies a force of
5 N to the brick in order to move it to the right. The magnitude of the
force of fiction on the brick is also 5 N. Which statement best describes
the efect of these two forces on the brick
A the net force in the brick is 10 N toward the right, and the brick begins to move.
B the net force on the brick is 0 N, and the brick begins to move.
C the net force on the brick is 0 N, and the brick remains at rest.
D the net force on the brick is 10 N toward the right, and the brick remains at rest.
Fun fact
Recycling one glass jar saves enough energy to watch television for 3 hours! ™
I found that out in a weird book
It had pretty weird things in there and it that this in there too
A que se le considera un modelo atómico
Answer:
kjdbfskfgshfk skjdbfsk dskjbf dskjbsd dkvhsf akb
Explanation:
Answer:
modelo de Bohr
Explanation:
En el modelo de Bohr del átomo, los electrones viajan en órbitas circulares definidas alrededor del núcleo. Las órbitas están etiquetadas por un número entero, el número cuántico n. Los electrones pueden saltar de una órbita a otra emitiendo o absorbiendo energía.
Families 1-2 and 13-18 are called the...
A. transition elements.
B. radioactive elements.
C. representative elements.
D. rare earth elements.
Answer:
C. representative elements.
Explanation:
Families 1 - 2 and 13 - 18 are called representative elements or often times, main group elements.
Elements on the periodic table belongs to four blocks which are s, p, d and f blocks. Those in the s and p-blocks are the main group elements also called representative elements. Their outer-shell are not completely filled with electrons but their inner shell is completely filled.This is the space surrounding the nucleus that has an overall negative charge___________. Atom Neutrons Nucleus Electrons Electron cloud Valence electrons Quarks Protons Shells
Answer:
Electron cloud
Explanation:
In an atom, the nucleus contains neutrons and protons. Electrons surround the nucleus.Protons are positively charged while electrons are negatively charged.The space in which electrons are located is called an electron cloud. Because this region is composed only of electrons and empty space, it has an overall negative charge.
Please Help 30 Points + Brainlest Look At The Image Below And Answer The Flowing Question
Answer:
Between A and D
Explanation:
