Answer:
Sal, cobre, aluminio, anillo de oro puro Oxígeno ------ suspensión.
Cerveza, carbonato de sodio, oxígeno, carbono y helio ------ solución.
Explicación:
Sal, Cobre, Aluminio, Anillo de oro puro Oxígeno son los ejemplos de suspensión porque permanecen suspendidos en la solución mientras que por otro lado, Cerveza, Carbonato de sodio, Oxígeno, Carbono y helio son los ejemplos de solución porque formaron una mezcla homogénea en la que ambas soluciones no se pueden diferenciar entre sí pero en suspensión sí se pueden diferenciar.
Question 2 please I mark brainliest
Answer: C is the answer
More points
p.s i gave points like 7 times already.... lol
hope it helps though
Answer:
lol we appreciate you!!
Explanation:
thank you
A 2.5l container has a gas of 4.6atm. If the volume is decreased to 1.6l. What will be the new pressure inside the container
Answer:
Just add and multiply after divding and lol
Explanation: add then add
For there to a measurable amount of heat, there must be a change in ____ in the system.
a.Enthalpy
b.Temperature
c.Mass
d.Rate
b.temperature
in a calorimetric determination, either 1. an exothermic process occurs and heat, q, is negative, indicating that thermal energy is transferred from the system to its surroundings, or 2. an endothermic process occurs and heat, q, is positive, indicating that thermal energy is transferred from the surroundings to the system.
Atomic masses of element
Hydrogen and carbon
Answer:
Atomic mass of Hydrogen is 1.00784 u
Atomic mass of Carbon is 12.0107 u
Explanation:
increase food supplies in an ecosystem decrease competition because the competing organsims would
List the three types of heating and describe how the ocean works.
Answer:
TYPES OF HEATING: There are three types of heat transfer: conduction, convection, and radiation.
OCEAN ANSWER: Ocean currents are driven by a range of sources: the wind, tides, changes in water density, and the rotation of the Earth. The topography of the ocean floor and the shoreline modifies those motions, causing currents to speed up, slow down, or change direction.
Explanation:
the answer is basicly the person who answered above me
Explanation:
Which is not a type of mass movement
Answer:
options?
Explanation:
what is the formation of the solar system?
Answer:
Mercury
Mars
Venus
Earth
Neptune
Uranus
Saturn
Jupiter
Explanation:
For the Balanced Reaction: 3 Mg + Fe2O3 → 3 MgO + 2 Fe
what is the mole ratio needed to calculate the moles of iron, if you are given the moles of magnesium?
Answer:
3 mol MgO : 2 mol Fe
Explanation:
What is the mass of 3.4 moles of NaCl?
Answer: 140.4 grams. One mole would be 58.5 grams, or 23 (the atomic mass of sodium) + 35.5 (the atomic mass of chlorine)
Explanation:
Answer:
3.4 * 58.5 = 198. 9 grams
Which of the following best describes the difference between metals and nonmetals?
a
metals tend to have low melting points and nonmetals have high melting points
b
nonmetals are more reactive than metals
c
metals are brittle and dull
d
metals have high melting points and are malleable, whereas, nonmetals have lower melting points and tend to be brittle.
Answer:
the answer is d.
Explanation:
because metals are refers to natural elements that are hard, shiney, opaque, and dense. nonmetals implies thise chemical substances that are soft, non-shiney, transparent and brittle.
Hey I'm Chloe can you Help me, Thank you :)
What pigment, only present in plants, makes photosynthesis possible?
Answer:
la photosintesis viene de la clorofila de la planta
What is T in the equation G = H - TS?
A.
The temperature in kelvins at which the reaction is happening
B.
The temperature in degrees Celsius at which the reaction is run
C.
The temperature required to make the reaction spontaneous
D.
The temperature at which the Gibbs free energy is zero
The answer is A.
The T in the equation G = H - TS is the temperature in kelvins at which the reaction is happening. The correct option is A.
What is temperature?Temperature is the measurement of the coldness or hotness of a body. The SI unit of the temperature is kelvin and Celsius. The high-temperature regard hotness and the low temperature means a cold area.
G = H – TS is the equation to calculate Gibbs free energy.
Where G = Gibbs free energy
H = enthalpy
T = temperature
S = entropy
Gibbs free energy is the total amount of energy that is taken to do the work in a closed system. The entropy is the total amount of energy that is not useful for work. The temperature is the variable in this equation.
Thus, the correct option is A. The temperature in kelvins at which the reaction is happening.
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Determine the correct set-up below to determine what mass, in grams, of N2 is needed to completely react with 105 g F2 ?
Answer:
C: 1 mol F2/38 g F2
Explanation:
The reaction equation is;
N2 + 3F2 = 2NF3
Now, to know how many grams, of N2 is needed to completely react with 105 g F2 and since the molar mass of N2 is 28.02 g/mol, Molar mass of F2 is 38 g/mol, number of moles attached to N2 and F2 in the reaction are 1 and 3 moles respectively, then we will have;
105 g F2 × 1 mol F2/38 g F2 × 1 mol N2/3 mol F2 × 28.02 g N2/1 mol N2
Option C is Thus correct
Which physical property will change if the amount of the sample changes?
Answer:
Extensive Properties
Explanation:
A physical property that will change if the amount of matter changes. Change in which the matter's physical appearance is altered, but composition remains unchanged. Solid is distinguished by a fixed structure. Its shape and volume do not change.
An element ceases to be that element if the particle it loses or gains is a neutron.
True or false
Answer:
False
Explanation:
An element is named according to the number of protons in the nucleus. If it gains or loses a neutron, it becomes a different isotope of the same element.
The given statement is false.
Answer:
FALSEExplanation:
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Can someone please fill in the blanks?
Answer:
g3gegsgehshhwwjwuwuwu2euyeeyeyyy
Answer:
helium formula He
Ammonia formula NH3
methane formula CH₄
chlorine formula Cl-
Explanation:
If the knot (W) travels 2 meters in 1 second, we say it has a _____ of 2 m/s.
Answer:
we say it has a speed of 2m/s
Why is ionic bonding considered a bond type and an attractive force?
Answer:
Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another. This exchange results in a more stable, noble gas electronic configuration for both atoms involved. An ionic bond is based on attractive electrostatic forces between two ions of opposite charge.
Explanation:
Need help too please I would really appreciate it
Answer:
it's O2 since the oxygen has 6 valence electrons and it can make 2 covalent bonds
How many meters per second is 1.61kilometers per minute?
Answer:
26.83333
Explanation:
How many moles of gas would be present in a gas trapped within a 37.0 L vessel at 80.00C at a pressure of 2.50 atm
go here is the answer key
http://msschmidly.weebly.com/uploads/2/6/2/0/26201624/gases_review___calculations.pdf
According to ideal gas equation, there are 271472.7 moles of gas present in a gas trapped within a 37.0 L vessel at 80.0°C at a pressure of 2.50 atm.
What is mole?Mole is defined as the unit of amount of substance . It is the quantity measure of amount of substance of how many elementary particles are present in a given substance.
It is defined as exactly 6.022×10²³ elementary entities. The elementary entity can be a molecule, atom ion depending on the type of substance. Amount of elementary entities in a mole is called as Avogadro's number.
It is widely used in chemistry as a suitable way for expressing amounts of reactants and products.For the practical purposes, mass of one mole of compound in grams is approximately equal to mass of one molecule of compound measured in Daltons .Molar mass has units of gram per mole . In case of molecules, where molar mass in grams present in one mole of atoms is its atomic mass.
Substitution of values in ideal gas equation gives,n= 2.5×37/8.314×353=271472.7 moles.
Learn more about moles,here:
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Why are most anions basic in H2O? Give formulas of four anions that are not basic.
Answer:
The anions that can act as bases (conjugate bases of weak acids) have the capability to hydrolyse water and produce OH− ions. Cl−, Br−NO−3, SO2−4 are all conjugate bases of strong acids that don't have the capability to hydrolyse water and so they aren't basic.
Explanation:
I have 8 valence electrons, completely nonreactive, and my family contains Helium that is used to fill balloons! I must be a...
a
metal
b
nonmetal
c
metalloid
d
noble gas
Answer:
Noble gas
Explanation:
Noble gases are complete octets ( have 8 valence electrons) Helium is a member of this family.
the firm outer covering of a plant cell is a
A.cell body
B.cell membrane
C.cell wall
d.cell structure
Answer:
it is the cell wall :)
Explanation:
Answer: The answer is C
List and Describe the two groups of clastic sedimentary rock.
Answer:
Clastic sedimentary rocks are formed from rock fragments or clasts; chemical sedimentary rocks precipitate from fluids, and biochemical sedimentary rocks form as precipitation from living organisms.
Sedimentary rock is classified into two groups based on how they form. They are clastic and chemical. Clastic sedimentary rock is formed as bits of weathered rock become cemented together. Because all kinds of rock are subject to weathering many different minerals can make up this group of rocks.
In words, how does the volume change when the temperature of an object changes?
Find the molarity of a solution made by dissolving 12.5 g sodium carbonate in 500.0 mL total solution
Answer:
The molarity of a solution is "25 M".
Explanation:
The given values are:
Moles of solute,
= 12.5 g
Volume of solution,
= 500 mL
i.e.,
= 0.5 L
Now,
The molarity will be:
= [tex]\frac{Number \ of \ moles \ of \ solute}{Volume \ of \ solution}[/tex]
On substituting the values, we get
= [tex]\frac{12.5}{0.5}[/tex]
= [tex]25 \ M[/tex]
Which of these most likely indicates that a chemical change has happened? A. Spoiled milk gives off a strong oder. B. Candle wax melts when it is heated. O C. Solid ice forms on a lake in winter. D. A guitar string vibrates when it is plucked.
Answer:
B- Candle wax melts when it is heated.