Answer: The concentration of the solution is 0.18 M
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.
[tex]Molarity=\frac{n}{V_s}[/tex]
where,
n = moles of solute
[tex]V_s[/tex] = volume of solution in L
moles of [tex]CaCl_2[/tex] = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{220g}{111g/mol}=1.98mol[/tex]
Now put all the given values in the formula of molality, we get
[tex]Molarity=\frac{1.98mol}{11L}=0.18M[/tex]
Therefore, the concentration of the solution is 0.18 M
Using the chemical formulae alone, how can you differentiate between Type I Ionic, Type II Ionic, Type III Ionic, and Covalent compounds?
Explanation:
Type I
These are compounds in which the cation (metal ion) has a fixed charge.
Examples are;
MgO. NaCl
Type II
These are ionic compounds in which the cation (metal ion) has a variable charge.
Examples are;
FeCl3, PbS2
Type III
These are covalent molecules with no cation.
Examples are;
SO3, N2O5
How many moles of AgNO3 must react to form 0.854 mol Ag?
mol AgNO3
Answer:
0.854
Explanation:
The equation of its dissolution in water is: AgNO3 → Ag + (aq) + NO3- (aq)
and AgNO3 → Ag + (aq) + NO3- (aq)
1 mol 1mol 1mol
? -------- 0.854mo
so for finding the value, it is sufficients to complute 1 x 0.854 mol =0.854 mol
so, 0.854 mol is required for the reaction to form 0.854 mol of Ag
How are the respiratory, urinary, and integumentary systems involved in the removal of waste. (list)
Answer:
The lungs in the respiratory system excrete some waste such as carbon dioxide. The bladder helps to remove waste by urination.2.)Which action forms a different chemical substance?
A. crushing a rock
B. burning a piece of wood
C.mixing salt and pepper
D.melting an ice cube
Answer:
B. burning a piece of wood
Explanation:
The Chemical Would Be The Air Coming From The Wood While Burning It
Tell Me If Im Correct
Need help ASAP DUE IN LIKE 2 minutes!!!!!!! Points are added
Proton:
Positive
Found in Nucleus
Mass of 1 AMU
Neutron:
Neutral
Found in Nucleus
Mass of 1 AMU
Electron:
Negative
Found in orbitals
Mass of 0 AMU
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What is the charge of an atom containing 9 protons, 11 neutrons, and 12 electrons?
Answer:
Explanation: atom is changed to ion. There are 3 more electrons than
Protons, so charge is -3. Actually, F atom can gain only one electron.
Then it will have an octet (8 electrons)
Pl help it’s for a grade and I can’t find it
Answer:
personally I think it's a but it could also be D.
But yeah personally I would say A
Can someone plz help me with this one problem plzzzzz I’m being timed!!!
Answer:
answer : the penguins do
CaC2 + 2H2O ⟶ C2H2 + Ca(OH)2
How many moles of water are needed to produce 56.8g C2H2?
Amount of moles of water is 4.36 mol
Explanation: M(C2H2) = 2·12.01 + 2·1.008 = 26.036 g/mol
Amount of substance is n= m/M= 56.8 g / 26.036 g/mol= 2.18159 mol
Water is needed 2·2.18 mol = 4.36 mol
What is the percent composition of oxygen in Iron(III) oxide? (Round to three sig figs)
Fe2O3 159.7g/mol
Fe =55.85 x 2 =111.7 g/mol
O = 16.00 x 3 = 48.00 g/mol
____% O
30.1%
do not ask why it just is.
H2SO4 + 2 KOH --> K2SO4 + 2 H2O
Combustion
Synthesis
Decomposition
Single replacement
Double replacement
O Neutralization
Which of the nine substances are made of four elements?
Answer:
Oxygen mucury carbon dioxide and platinum
Explanation:
which of the following is not found in cytoplasm
A.water
B.carbohydrates
C.salt
D.vitamins
Answer:
B is the right answer
carbohydrates are not found inside the cytoplasm so therefore it is B
Answer:
D
Explanation:
The cytoplasm is composed of water, salt and some organic molecules. (e.g. carbohydrates)
HELPP ASAP I’ll mark you as brainlister 100 points :((((
Answer:
the pool table one
Explanation:
cuz gas just goes EVERYWHERE
1. Mercury is most often obtained by roasting cinnabar (HgS). How many grams of cinnabar
are required to obtain 165 grams of mercury?
HgS + 02—-Hg + SO2
Answer:
191.4 grams of cinnabar are required to obtain 165 grams of mercury.
Explanation:
The balanced reaction is:
HgS + O₂ ⇒ Hg + SO₂
By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:
HgS: 1 mole O₂: 1 mole Hg: 1 mole SO₂: 1 moleBeing the molar mass of each compound:
HgS: 232g/moleO₂: 32 g/moleHg: 200 g/moleSO₂: 64 g/molethe following mass amounts of each compound participate in the reaction:
HgS: 1 mole* 232 g/mole= 232 gO₂: 1 mole* 32 g/mole= 32 gHg: 1 mole* 200 g/mole= 200 gSO₂: 1 mole* 64 g/mole= 64 gThen you can apply the following rule of three: if by stoichiometry 200 grams of Hg are formed from 232 grams of HgS , 165 grams of Hg are formed from how many grams of HgS?
[tex]mass of HgS=\frac{165 grams of Hg*232 grams of HgS}{200 grams of Hg }[/tex]
mass of HgS= 191.4 grams
191.4 grams of cinnabar are required to obtain 165 grams of mercury.
What two gases are cycled through ecosystems?
[tex]\huge\tt \blue{❥Answer}[/tex]
Photosynthesis converts carbon dioxide gas to organic carbon, while respiration cycles the organic carbon back into carbon dioxide gas.
______________________________
~ ʜᴀᴘᴘʏ ʟᴇᴀʀɴɪɴɢ ~
Position A B C
Pe
Ke
Me
CH4 + 2O + CO2 + 2 H2O
If 9.65 mole of methane reacts with oxygen to produce carbon dioxide and water, what mass of water is produced?
Answer:
347.4 (19.3 mole)
Explanation:
CH4 + 2O2 = CO2 + 2H2O
1(mole) - 9.65(mole)
2(mole) - x ⇒x = 9.65*2=19.3
m=n*M ⇒ m= 19.3*(1*2+16)= 19.3*18=347.4(g)
if common names does not exist how would be the world of organic compounds
Explanation:
I think the question is not complete
En una planta de energía, se produce CO2 gracias a la reacción de combustión del material orgánico con oxígeno para producir CO2, SO2, SO3, NO, NO2 y H2O que son los causantes del efecto invernadero, el SO2 reacciona con H2O para formar H2SO3, causante de la lluvia ácida. En condiciones de gas ideal el SO2 se encuentra a una temperatura de 100°C y 0,5 atm de presión, el volumen ocupado generalmente es de 25 L. 5. La ecuación para hallar el número de moles debe ser: a. Gases ideales: relación entre todas las variables que influyen sobre los gases b. Boyle: relación entre volumen y presión c. Charles: relación entre el volumen y la temperatura d. Gay Lussac: relación entre la presión y la temperatura
Answer:
a. Gases ideales: relación entre todas las variables que influyen sobre los gases
Explanation:
La ecuación del gas ideal da la relación entre las variables; presión, volumen, temperatura y número de moles.
Según la ecuación del gas ideal; PV = nRT
P = presión del gas
V = volumen del gas
n = Número de moles del gas
R = constante de gas
T = temperatura del gas
El número de moles de SO2 se obtiene de;
n = PV / RT
n = 0,5 * 25 / 0,082 * 373
n = 12,5 / 30,586
n = 0,41 moles
What Effect on the temperature of a boiling liquid and on it's distillation temperature is produced by a soluble nonvolatible impurity
Answer:
What effect on the temperature of a boiling liquid and on its distillation temperature is produced by each of the following?(a)A soluble, nonvolatile impurity? It would cause the mixture to boil at higher temperature and increase the distillation temperature.
It would cause the mixture to boil at a higher temperature and increase the distillation temperature.
What is distillation?Distillation is a process involving the conversion of a liquid into a vapour that is subsequently condensed back to liquid form.
During distillation, substances separate based on their boiling points. The boiling point of the mixture varies as vapour rises in a distillation column, due to changes in temperature and pressure. This process divides distillation into stages.
Hence, It would cause the mixture to boil at a higher temperature and increase the distillation temperature.
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How are plate tectonics and the rock cycle connected
Answer:
All igneous rocks the basis of the rock cycle are formed by plate tectonics. ... The heat from the mantle that fuels plate tectonics causes both igneous and sedimentary rocks to be turned into metamorphic rocks. The metamorphic rocks can be eroded into sedimentary rocks are remelted back into igneous.
Explanation:
I need help with #4 please
Answer:
1. Land 2. open 3. broken 4. Lava matter 5. Force of the plates
Write the name of flame used In charcoal cavity test.why?
Answer:
the reducing flame also called the carburizing flame.
Explanation:
because it gets the oxides of the unknown salts
How does the human body build the complex
molecules it needs?
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case
Answer:
Dehydration synthesis reactions build molecules up and generally require energy, while hydrolysis reactions break molecules down and generally release energy. Carbohydrates, proteins, and nucleic acids are built up and broken down via these types of reactions, although the monomers involved are different in each case.
Explanation:
What is the difference between speed and acceleration?
Please help :)
Answer:
Speed is how fast you are going at the moment but acceleration is how fast you are building up speed to get to a set point
Explanation:
pls i have a chemistry test answers asap :'(
Answer:
Zinc is more active than copper.
Explanation:
Now, the reason is that Zinc loses its valence electrons more easily than copper to take part in a reaction.
4) What mass of hydrogen is formed when 2.00g of magnesium
Mg + H2SO4–>H2SO4
Answer: 0.16 g H2
Explanation:
Mg+ H2SO4= MgSO4 + H2
Atomic massof Mg is 24
Molecular mass of H2 is 2
So,
24g Mg produce 2 g H2
1g Mg produce (2÷24)= 0.083 g H2
2.00g Mg produce (0.083×2) g H2
= 0.16 g H2
0.16g of hydrogen is formed when 2.00g of magnesium.
The mass of hydrogen gas formed when 2.00g of magnesium is equal to 0.165 g.
What is the balanced chemical equation?The chemical equation of a reaction is said to be a balanced equation when the number of atoms of substances is equal on either side of the equation.
Evergy balanced chemical equation must follow the law of conservation of mass according to which the total mass of the substances present on the reactant side should be equal to the total mass of substances present on the product side.
Given, the balanced chemical equation of the reaction of Mg and sulfuric acid:
[tex]Mg + H_2SO_4 \longrightarrow MgSO_4 +H_2[/tex]
One mole of magnesium produces hydrogen gas = 1mol
Given the mass of magnesium = 2g
The number of moles of Mg = 2/24.3 = 0.082 mol
Then the number of moles of hydrogen gas formed = 0.082 mol
The mass of the hydrogen gas = 0.082 × 2 = 0.165 g
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What volume will 25.2 g of He occupy at STP?
Answer:
The volume is 20.3
Explanation:
I need help with the question below:
[tex]PCl_5 = PCl_3+Cl_2 \\ [/tex]
Where PCl5 and PCl3 are gasses
In the above equation , Predict the effect of change in :
I. Temperature
ii. Pressure
iii. Removal of Chlorine
Answer:
1: As the temperature rises, the equilibrium moves towards the products
2: The higher the pressure, the higher the equilibrium goes to the reactants
3: By removing chlorine, the equilibrium moves towards the products