Answer:
Individual solute particles are broken apart from the solid by the;
c. Solvent
Explanation:
A solution is the homogeneous mixture that is made up of two or more substances formed by dissolving a substance which can be a solid, liquid or gas in another substance known as the solvent which normally the larger part of the fraction of the solution than the solute and can also be a solid, liquid or a gas
In a solution the solvent particles serves to brake of and disperser parts of a solid solute to form a more or less homogeneous mixture
Therefore, the solute particles are broken by the solvent particles in a solution
Calculate the pH if the pOH = 7.4
Round your answer to two decimal places.
i need points
Explanation:
Give the formula for trinitrogen hexafluoride
3) What are the three types of sedimentary rocks?
Answer:
clastic, organic, and chemical
When a comet enters the solar system, it curves toward the sun. Which statement describes why the sun does not move when a comet is nearby?
Answer:
Explanation:
When a comet enters the solar system it curves towards the Sun due to the Sun's gravitational pull. Every celestial object in the universe has a gravitational pull whose force is dependent on the object's mass. The larger the object is the more gravitational pull it will have. The Sun is the largest object in our Solar system and therefore has the most gravitational pull. This is why the comet curves toward the Sun, but the opposite does not happen because the comet's gravitational pull is not strong enough to pull the Sun.
What reaction is zinc(s) + water(l) →
Answer:
Zn+H2O ------ ZnO + H2 is the correct answer
You are growing a garden and notice that the soil is always wet. What type of soil do you have?
Sand
Silt
Clay
Loam
Answer:
Clay
Explanation:
clay does not allow water to flow
what is the name of the world's first scientist?
Answer:
Aristotle is considered by many to be the first scientist, although the term postdates him by more than two millennia. In Greece in the fourth century BC, he pioneered the techniques of logic, observation, inquiry and demonstration.
Explanation:
hope this help:))
WILL VOTE BEST & GIVE 25 POINTS - PLEASE ANSWER
Your mom needs some pills from the Walgreens pharmacy for her diabetic medication. If one of the
pills weighs 650mg and the technician weighs exactly 15.6g of pills, how many pill were dispensed
and placed into the pill bottles. Show all work with units.
Answer:
24 pills
Explanation:
650 mg/1000 = 0.65 g
(There are 1000 mg in one g)
15.6g/0.65g=24
PLS HELPPPP OMG PLSPLSPLSPLSPLS
Answer:
D 44.8 L liters of hydrogen gas
In 2011, fires in Bastrop County, Texas were the most damaging wildfires in Texas history. The fire spread through the pine trees and scorched nearly 5,700 acres of Bastrop State Park. The majority of the Houston toad’s habitat was lost, and the Lost Pines Forest was greatly affected. As ecological succession began, which of these most likely appeared in the Bastrop forest area first?
A.Shrubs and trees
B. Newly developed topsoil
C.Weeds and grasses
D.Lichens on fallen trees
The most likely appeared in the Bastrop forest area first is to be considered as the C.Weeds and grasses.
What is ecology?It is the study that represents the relationships between a living organism that involved the human, and the physical environment.
It is at the individual, population, community, ecosystem, etc.
Hence, the option c is correct.
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how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2
Answer:
0.047
Explanation:
Data : 5g , Na2CO3
Formula:
Molecular mass of Na2Co3 = no.of atomic mass x no. of atom
moles = mass÷ molecular mass
molecular mass = 2(23)+1(12)+3(16)
=106amu
moles = 5÷106
= 0.047 Ans:
What is the freezing point of solution that has 185.25 grams of Ca(OH)2 (formula mass = 74.1) dissolved in 2,500 grams of water at standard pressure?
Answer:
The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) in the mixture. This gives the moles of the solute.
Explanation:
Does this help at all??
A solution has [H+] = 7.65*10^-3 what is the [OH-] in the solution?
Answer:
The hydroxide ion concentration in an aqueous solution, [OH-], in mol L-1, can be calculated if the pOH of the solution is known.
pOH is defined as the negative logarithm (to base 10) of the hydroxide ion concentration in mol L-1 pOH = -log10[OH-]
Explanation:
what is 412.12 reduced to two significant figures?
Answer: 410
Explanation:
Drop the retaining numbers 1 and 2 after the decimal and then round the 2 in 412 to 0 because any number less than 5 rounds to 0. 0 shouldn’t count as a sig fig.
The amount of space is ___ and a common unit is ___.
A. mass, gram
B. volume, gram
C. mass, mL
D. volume, mL
Answer:
c
Explanation:
What is the ratio of the effusion rate of the helium to methane? (round to hundreds)
Answer:
2.00
Explanation:
From Graham's law; the rate of effusion is inversely proportional to the square root of the relative molecular mass.
Let the rate of effusion of Helium be R1
Let the rate of effusion of Methane be R2
Let the molecular mass of Helium be M1
Let the molecular mass of Methane be M2
Hence;
R1/R2 = √M2/M1
R1/R2 = √16.0294/4.0026
R1/R2 = 2.00
Name the binary covalent compounds.
CO2:
CS2:
PBr3:
P2S5:
N2S:
SiS2:
NBr3:
N2Cl4
Answer:
CO2: Carbon Dioxide
CS2: Cardon Disulfide
PBr3: Phosphorus Tribromide
P2S5: Phosphorus Pentasulfide
N2S: Monosulfur Dinitride
SiS2: Silicon Disulfide
NBr3: Nitrogen Tribromide
N2CI4: Sorry don't know this one.
Atoms of two distinct elements are bound together by covalent bonds to form binary covalent compounds. They typically contain nonmetal elements, such as laughing gas NO, a gas that causes acid rain SO₂, etc. Binary covalent compounds are those that consist of just two components.
The definition of a covalent compound is one in which the atoms are joined by a covalent connection. Compounds with just two elements are referred to as binary covalent compounds.
The name of the given compounds are:
CO₂: Carbon Dioxide
CS₂: Cardon Disulfide
PBr₃: Phosphorus Tribromide
P₂S₅: Phosphorus Pentasulfide
N₂S: Monosulfur Dinitride
SiS₂: Silicon Disulfide
NBr₃: Nitrogen Tribromide
N₂CI₄: Dinitrogen Tetra chloride
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The thin muscular wall that separates the right side of the heart from the left side is called the
What do normal people call it?
Explanation:
crystal rocks blue ig
.
.
Electrotonic configuration of potassium 19K ion equal the Electrotonic configuration of
1) ⁸0
2) ¹¹Na
3) ¹⁸Ar
4) ¹⁷C1
i don’t know:(
please help!
Answer:
its b , Symmetrical and nonpolar
Explanation:
Its c
Answer:
Explanation:
How does density affect the organization of earth?
A : The densest material is closest to the center
B : The density material is farthest from the center.
C : The densest material is near the center
D : Density differences allow Earth materials to mix freely. ( science by the way )
Answer:
Earth has layers because of density. Dense materials such as iron sank to the middle of the Earth, the center of its gravity. Less dense materials stayed at the top.
Explanation:
hope this help:)
The answer to the question, How does density affect the organization of earth is A : The densest material is closest to the center
The earth is made up of different layers namely,
The crustThe upper mantleThe lower mantleThe outer core andThe inner core.Each layer goes from topmost to inner most and the density of each layer increases as we moves closer to the center of the earth.
So, the densest material is closest to the center.
So, the answer to the question, How does density affect the organization of earth is A : The densest material is closest to the center
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how many atoms are present in the compound (nh4)2cr2o7
Answer:
2,8,2,and,7
Explanation:
What temperature kelvin would .97mol of gas be to occupy 26L at 751.2mmHg?
Answer: 322.56 Kelvin
Explanation:
Use the Ideal Gas Law
[tex]PV=nRT[/tex]
R is the gas constant
T is the temperature in Kelvins
P is the pressure in atmospheres
V is the volume in liters
n is the number of moles of gas
First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.
[tex]751.2mmHg (torr) =0.988atm[/tex]
Now plug everything in
[tex](0.988)(26)=(0.97)(0.0821)T\\T=322.56K[/tex]
balance the equations
Answer: a) [tex]H_3PO_4+3NaOH\rightarrow Na_3PO_4+3H_2O[/tex]
b) [tex]PCl_3+3H_2O\rightarrow P(OH)_3+3HCl[/tex]
c) [tex]2Al+3H_2SO_4\rightarrow Al_2(SO_4)_3+3H_2[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
The balanced chemical equations are :
[tex]H_3PO_4+3NaOH\rightarrow Na_3PO_4+3H_2O[/tex]
[tex]PCl_3+3H_2O\rightarrow P(OH)_3+3HCl[/tex]
[tex]2Al+3H_2SO_4\rightarrow Al_2(SO_4)_3+3H_2[/tex]
Give the number of protons, electrons and neutrons in one atom of Carbon.
Answer:
6 protons, 6 neutrons, and 6 electrons.
Explanation:
Pls help me i have been seeing people giving out the wrong answers on purpose and I just don't want that so pls
Answer:
B
Explanation:
Answer:
I think the answer is B. I need 20 characters but I can't think of anything else to type.
Plants respond to different kinds of stimuli. A plant's roots searching for water are an
example of what kind of response?
A. thigmotropism
B. phototropism
C. hydrotropism
D. gravitropism
Answer:
Explanation:
Hydrotropism
Zinc sulfide and oxygen gas react to form zinc oxide and sulfur dioxide. Determine the amount (g) of SO2 that should be produced in a reaction between 32.5 g of ZnS and 23.3 g of oxygen gas. What is the mass of the xs reactant?
Answer:
7.30g O₂ are in excess and 21.3g of SO₂ should be produced.
Explanation:
The reaction of Zinc sulfide (ZnS) with oxygen (O₂) produce ZnO and SO₂ as follows:
2ZnS + 3O₂ → 2ZnO + 2SO₂
Using this reaction we can find the amount of SO₂ produced converting the ZnS and O₂ to moles and finding limiting and excess reactant as follows:
Moles ZnS -Molar mass: 97.47g/mol-:
32.5g * (1mol / 97.47g) = 0.333 moles ZnS
Moles O₂ -Molar mass: 32g/mol-:
23.3g O₂ * (1mol / 32g) = 0.728 moles O₂
For a complete reaction of the 0.333 moles of ZnS are required:
0.333 moles ZnS * (3mol O₂ / 2mol ZnS) = 0.500 moles O₂.
As there are 0.728 moles of O₂, limiting reactant is ZnS and excess reactant is O₂.
The moles and mass of O₂ in excess are:
0.728mol - 0.500mol = 0.228moles O₂ * (32g / mol) = 7.30g O₂ are in excess
The produced mass of SO₂ -Obtained from the moles of ZnS- is:
0.333 moles of ZnS * (2mol SO₂ / 2mol ZnS) = 0.333 moles SO₂
0.333 moles SO₂ * (64.066g / mol) =
21.3g of SO₂ should be producedHow to convert the mass of a substance to the number of moles of a substance, and moles to mass
Answer:
Explanation:
To convert the mass to moles, divide the mass by the atomic weight of the element or compound.
To convert back to mass from the moles, multiply the moles by the atomic weight of the element or compound