Answer:
See explanation below
Explanation:
There are many statements and ways to compare both solutions, but the commons one are concentration or molarity, and %m/V.
Both of these statements are valid to compare both solutions, however, molarity is the best to use because with a single number, we can see which solution is more concentrated.
To calculate the molarity of any solution we use the following expression:
M = n/V
n: number of moles of solute.
V: volume of solution in liter.
Now, as the solvent of the solution is water, and the solute is a solid, the volume of solution will be the same volume of the solvent.
The common sugar is the sucrose, and the molecular formula of this is C12H22O11, the molar mass is 342.3 g/mol.
With this, we can calculate the moles:
n = m/MM
n₁ = 5/342.3 = 0.0146 moles
n₂ = 10/342.3 = 0.0292 moles
Now, it's time to see the concentration of each solution:
M₁ = 0.0146 / 1 = 0.0146 M
M₂ = 0.0292 / 1 = 0.0293 M
With this we can conclude that solution 2 is more concentrated than solution 1. In other words M₂ > M₁
What is the name of C3H8?
Answer:
Propane
Explanation:
Stabiliţi numerele de oxidare ale tuturor elementelor prezente în următoarele substanţe chimice, ţinând cont de principalele reguli de stabilire a NO: ⦁ NaNO3 ⦁ AlPO4 ⦁ CaCO3 ⦁ KMnO4 ⦁ K2Cr2O7 ⦁ HClO4 (acid percloric) ⦁ HClO3 (acid cloric) ⦁ HClO2 (acid cloros) ⦁ HClO (acid hipocloros)
Answer:
a.
N = +2
O = -2
b.
Na = +1
O = -2
N = +5
c.
O = -2
Al = +3
P = +5
d.
O = -2
Ca = +2
C = +4
e
O = -2
Mn = +7
K = +1
f.
O = -2
K = +1
Cr = +6
g.
O = -2
Cl = +7
Cr = +1
h.
O = -2
H = +1
Cr = +5
i.
O = -2
H = +1
Cr = +3
k.
O = -2
H = +1
Cr = +1
Explanation:
A. NU
Numărul de oxidare a azotului = +2
Numărul de oxidare a oxigenului = -2
b. NaNO₃
Numărul de oxidare de Na = +1
Numărul de oxidare de O = -2
Numărul de oxidare de N = +5
c. AlPO₄
Numărul de oxidare de O = -2
Numărul de oxidare al Al = +3
Numărul de oxidare al P = +5
d. carbonat de calciu
Numărul de oxidare de O = -2
Numărul de oxidare de Ca = +2
Numărul de oxidare de C = +4
e. KMnO₄
Numărul de oxidare de O = -2
Numărul de oxidare al Mn = +7
Numărul de oxidare al lui K = +1
f. K₂Cr₂O₇
Numărul de oxidare de O = -2
Numărul de oxidare al lui K = +1
Numărul de oxidare al Cr = +6
g. HClO₄
Numărul de oxidare de O = -2
Numărul de oxidare al Cl = +7
Numărul de oxidare al Cr = +1
h. HClO₃
Numărul de oxidare de O = -2
Numărul de oxidare al lui H = +1
Numărul de oxidare al Cr = +5
i. HClO₂
Numărul de oxidare de O = -2
Numărul de oxidare al lui H = +1
Numărul de oxidare al Cr = +3
k. HClO
Numărul de oxidare de O = -2
Numărul de oxidare al lui H = +1
Numărul de oxidare al Cr = +1.
1.
__________ are the most organized state of matter.
Solids
Liquids
Gases
2.
States of matter change when ________ is added or removed.
Plasma
Energy
3.
Which state of matter has the most movement of its particles?
Solid
Liquid
Gas
Solids are the most organized state of matter. States of matter change when energy is added or removed. Gas is the state of matter has the most movement of its particles.
What are the states of matter?The states of matter are the different forms of the matter in which it can exist. They are solids, liquids and gases. Solids are the states of matter in which molecules are very near to each other. They have fixed shape and volume. Liquids is the states of matter in which molecules are a little far from each other. They have different shape and fixed volume. Gas is the states of matter in which molecules are a very far from each other. They have different shape and different volume.
There are two more states of matter which are called as Plasma, Bose Einstein Condensate.
Plasma have highest energy and Bose Einstein Condensate have lowest energy.
Therefore, Solids are the most organized state of matter. States of matter change when energy is added or removed. Gas is the state of matter has the most movement of its particles.
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How many carbon and hydrogen atoms are there?
Answer:
13 carbon and 24 hydrogen
Explanation:
There are 24 hydrogen atoms.
There are 13 carbon atoms.
(02.02 MC)
How is Earth's surface most likely to change in a place that experiences strong sand storms?
Answer:
Mechanical weathering will cause wearing down of rocks.
Explanation:
All the other choices aren't suitable for a dry climate where sand storms occur.
HELP PLEASE I WILL GIVE 100 PONTS
All of the following properties of a solution would decrease if you increased the concentration of solute, EXCEPT which?
A. freezing point
B. boiling point
C. vapor pressure
D. they would all decrease
Answer:
boiling point
Explanation:
What is the molariity of a 50.0 mL aqueous solution containing 10.0 grams of copper (II) sulfate, CuSO4?
Answer:
The molarity is 1.26 [tex]\frac{ moles}{L}[/tex]
Explanation:
Molarity is a unit of concentration that is based on the volume of a solution and represents the number of moles of solutes contained in a liter. The molarity of a solution is calculated by dividing the moles of the solute by the liters of the solution and is expressed in units (moles / liter).
[tex]Molarity=\frac{number of moles of solute}{Volume}[/tex]
You must calculate the number of moles of CuSO₄. So, being:
Cu: 63.54 g/moleS: 32 g/moleO: 16 g/molethe molar mass of CuSO₄ is
CuSO₄=63.54 g/mole + 32 g/mole + 4* 16 g/mole= 159.54 g/mole
Then it is possible to apply the following rule of three: if 159.54 g of CuSO₄ are present in 1 mole, 10 g in how many moles are they?
[tex]moles=\frac{10 g*1 mole}{159.54 g}[/tex]
moles= 0.063 moles
Then:
number of moles of solute= 0.063 molesVolume= 50 mL= 0.05 L (Being 1L=1000 mL)Replacing in the definition of molarity:
[tex]Molarity=\frac{0.063 moles}{0.05 L}[/tex]
Molarity= 1.26 [tex]\frac{ moles}{L}[/tex]
The molarity is 1.26 [tex]\frac{ moles}{L}[/tex]
How killers cover up their crimes
Answer:
They hide their evidence and destroy any if absolutely necessary. You also would need to wear gloves, so you dont put your identity everywhere. Also, you need to flee and just forget that what you did, did not happen. And hope you dont get arrested xD
Explanation:
What mass in grams of hydrogen is produced by the reaction of 2.0 g of magnesium? (Make sure to balance the reaction first)
Mg(s) + H2O(1) --> Mg(OH)2(s) + H2 (8)
Answer:
0.164541341 g H2
Explanation:
1) Convert grams to moles by dividing by RMM of Magnesium (24.31g).
2g Mg * (1 mol Mg / 24.31 g Mg) = 0.082270671 mol of Mg
2) Use the balanced equation's ratio of 1 mol Mg: 1 mol H2.
0.082270671 mol of Mg = 0.082270671 mol of H2
3) Convert the mol of H2 back into grams by multiplying by H2's RMM (2 g).
0.082270671 mol of H2 * 2 g H2 = 0.164541341 g H2
* Answer can be rounded to your liking *
PLZZZ HELP CHEM!!!!!!! Easy points!!!!!
Answer:
H+
Explanation:
Answer:
OH-
Explanation:
An Arrhenius base is any species that increases the concentration of
OH
Do liquids have higher coefficients of expansion than solids do
Answer: yes they do.
Explanation:
I'm tryna get more points because my other account got blocked for the next 48 hours.
(Don't be mad at me please)
10. You can protect yourself from radiation by
going up to a higher elevation
increasing the time you are exposed
increasing your water intake
getting further away from the radiation source
Answer:
You can protect yourself from radiation by getting further away from the radiation source .
What is the name for a star that has two shells of hydrogen and helium undergoing fusion?
A.
asymptotic giant branch star
B.
supergiant
C.
hypergiant
D.
supernova
Answer:
I am not so sure but I think it is A.
Explanation:
If i got it wrong sorry.... :(
Answer:
the answer is A hope it helps
If a hypothetical future Earth has increased the amount of radiation emitted to 604 W/m, calculate the hypothetical global surface temperature in degrees Kelvin and then in Celsius
Answer:
Explanation:
For amount of radiation from a hot body there is Stefan's Boltzman's law which is given below .
E = e σ T⁴
E is amount emitted , e is emissivity , σ is stefan's constant = 5.67 X 10⁻⁸ W / m² . for earth e =.85 approx
E = .85 x 5.67 X 10⁻⁸ x T⁴
604 = .85 x 5.67 X 10⁻⁸ x T⁴
604 = 4.82 x 10⁻⁸ T⁴
T⁴ = 125.31 x 10⁸
T = 3.3457 x 10²
= 334.57K
Temperature in Celsius = 334.57 - 273
= 61.57 Celsius .
Which term describes this reaction?
A- addition
B- condensation
C- elimination
D- substitution
Answer:
C.
Explanation:
This is a reaction of elimination, because the water was removed and because of it double bond is formed.
3 hazards that occur in teaching and learning of science
What is similar about igneous rock and metamorphic rock formation?
Answer:
I think they both need heat.
Explanation:
How many moles of H2 are needed to produce 18 moles NH3 in the reaction below?
N2 + 3 H2 —> 2 NH3
Answer:
27 moles of H₂
Explanation:
Equation of reaction:
N₂ + 3H₂ → 2NH₃
From the equation of reaction,
3 moles of H₂ is required to produce 2 moles of NH₃
3 moles H₂ = 2 moles of NH₃
X moles of H₂ = 18 moles of NH₃
X = (3 * 18) / 2
X = 27 moles of H₂
27 moles of H₂ is required to produce 18 moles of NH₃
If matter is neither created nor destroyed, why can’t we just go directly from grams of reactant to grams of product?
According to the law of conservation of mass, there is no net change in the reactants' and products' masses before and after a chemical reaction.
What is chemical reaction?Chemical reaction is defined as a procedure where one or more compounds, known as reactants, are changed into one or more new substances, known as products. When atoms establish or break chemical bonds, chemical reaction take place.
Law of conservation of mass is defined as a chemical reaction requires that the total mass of the reactants and products be equal. Law of conservation of mass also stated that mass is always conserved throughout chemical reactions and cannot be created or removed.
Thus, according to the law of conservation of mass, there is no net change in the reactants' and products' masses before and after a chemical reaction.
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The combustion of 0.1240 kg of propane in the presence of excess oxygen produces 0.3110 kg of carbon dioxide. What is the limiting reactant?
PLEASE I REALLY NEED HELP!!!!
Answer:
The limiting reactant is the propane gas, C₃H₈ while the percentage yield is 83.77%
Explanation:
Here we have
Propane gas with molecular formula C₃H₈, molar mass = 44.1 g/mol combining with O₂ as follows
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O
Therefore, 1 mole of C₃H₈ combines with 5 moles of O₂ to produce 3 moles CO₂ and 4 moles of H₂O
Mass of propane = 0.1240 kg = 124.0 g
Number of moles of propane = mass of propane/(molar mass of propane)
The number of moles of propane = 124/44.1 = 2.812 moles
The molar mass of CO₂ = 44.01 g/mol
Mass of CO₂ = 0.3110 kg = 311.0 g
Therefore, number of moles of CO₂ = mass of CO₂/(molar mass of CO₂)
The number of moles of CO₂ = 311.0 kg/ 44.01 g/mol = 7.067 moles
Therefore, since 1 mole of propane produces 3 moles of CO₂, 2.812 moles of propane will produce 3 × 2.812 moles or 8.44 moles of CO₂
Therefore;
The limiting reactant is the propane gas, C₃H₈, since the oxygen is in excess
Hence
[tex]The \ percentage \ yield = \frac{Actual \, yield}{Theoretical \, yield} \times 100 = \frac{7.067}{8.44} \times 100 = 83.77 \%[/tex]
The percentage yield = 83.77%.
pH of a 0.00072 M HCl solution.
Answer:
3.14
Explanation:
pH=-log(H+)
- Hope that helps! Please let me know if you need further explanation.
True or False? The Grand Canyon was probably formed through wind abrasion.
Answer:
True.
Explanation:
Wind abrasion is a form of erosion.
Hope I helped ya.
< Sarah >
A 0.050L solution of Ba(OH)2 is neutralized by 0.072L of a 0.55 M HNO3 solution. What is the concentration of the Ba(OH)2 solution?
Answer:
0.396M
Explanation:
Step 1:
The balanced equation for the reaction. This is given below:
2HNO3 + Ba(OH)2 —> Ba(NO3)2 + 2H2O
From the balanced equation above,
The mole ratio of the acid (nA) = 2
The mole ratio of the base (nB) = 1
Step 2:
Data obtained from the question. This include the following:
Volume of base (Vb) = 0.05L
Concentration of base (Cb) =..?
Volume of acid (Va) = 0.072L
Concentration of acid = 0.55 M
Step 3:
Determination of the concentration of the base, Ba(OH)2.
The concentration of the base, Ba(OH)2 can be obtained as follow:
Cava /CbVb = nA/nB
0.55 x 0.072 / Cb x 0.05 = 2/1
Cross multiply to express in linear form
Cb x 0.05 x 2 = 0.55 x 0.072
Divide both side by 0.05 x 2
Cb = (0.55 x 0.072) / (0.05 x 2)
Cb = 0.396M
Therefore, the concentration of the base, Ba(OH)2 is 0.396M
Convert 4.6 atm to mmHg.
What organelle does the process of cellular respiration?
Answer:
Mitochondria
Explanation:
The mitochondrion is the site of cellular respiration. The first part of cellular respiration (glycolysis) happens in the cytoplasm. The second part of cellular respiration needs oxygen, and it occurs in mitochondria.
Which of these pairs would form an ionic bond?
Answer:
Ionic bonds form between nonmetals and metals. So just choose the one with a nonmetal element (like Na) and a metal element (like Cl)
Answer:
A
Explanation: K and Br
a) Balance the equation below.
Hg(ONC)2 -----------> Hg + N2 + CO
b.) After decomposition, if you are left with 50.2g of CO, how many grams of mercury fulminate did you start with? (Hint: This problem asks about how many grams of reactant we start with, you can do the problem the same way as if CO was the reactant and Hg(ONC)2 was the product.)
Answer:
254.7 g
Explanation:
Hg(ONC)2 -----------> Hg + N2 + 2CO
In every problem of stoichiometry, we must commence with writing the balanced reaction equation as a guide to our calculation. Once we have written the reaction equation, we can now proceed with the solution.
Amount of CO produced= mass of CO produced/ molar mass of CO
Molar mass of CO = 28 gmol-1
Mass of CO produced= 50.2g
Amount of CO produced= 50.2g/28gmol-1
Amount of CO produced= 1.79 moles of CO
From the reaction equation:
1 mole of Hg(ONC)2 produced 2 moles of CO
x moles of Hg(ONC)2 will produce 1.79 moles of CO
x= 1.79 × 1 / 2
x= 0.895 moles of Hg(ONC)2
Molar mass of Hg(ONC)2 = 284.624 g/mol
Mass of Hg(ONC)2 = number of moles × molar mass = 0.895 moles × 284.624 g/mol
Mass of Hg(ONC)2 = 254.7 g
what happens when light is not spread out
Answer:
Spreading out a wave over a larger area just causes the wave strength to weaken, but does not cause gaps to form. Therefore, if you look at photons as waves, spatial gaps never form in light as it travels through free space, no matter how dim it gets.Spreading out a wave over a larger area just causes the wave strength to weaken, but does not cause gaps to form. Therefore, if you look at photons as waves, spatial gaps never form in light as it travels through free space, no matter how dim it gets
Explanation:
In the water cycle diagram above, which letter represents
groundwater?
Select One:
Q
S
T
R
Answer:t
Explanation:bc
Heat that is transferred by the movement of currents within fluid is called
Answer:Convection is heat transfer by the movement of currents within a fluid. During convection, heated particles of fluid begin to flow. This flow transfers heat from one part of the fluid to another. Heat transfer by convection is caused by differences of temperature and density within a fluid