a. 0.6 moles
b. 35.1 grams
Further explanationGiven
Volume = 0.2 L
Molarity = 3 M
Required
mol of Sodium chloride
Solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
Input the value :
n = M x V
n = 3 M x 0.2 L
n = 0.6 moles
Mass of NaCl :
= mol x molar mass of NaCl
= 0.6 x 58.5 g/mol
= 35.1 grams
What is the mass, in grams, of MgCl2 is consumed when 255g Mg(OH)2 is produced?
MgCl2 + 2 LiOH → Mg(OH)2 + 2 LiCl
416 g MgCl₂
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableStoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
[RxN - Balanced] MgCl₂ + 2LiOH → Mg(OH)₂ + 2LiCl
[Given] 255 g Mg(OH)₂
[Solve] x g MgCl₂
Step 2: Identify Conversions
[RxN] 1 mol MgCl₂ → 1 mol Mg(OH)₂
[PT] Molar Mass of Mg - 24.31 g/mol
[PT] Molar Mass of O - 16.00 g/mol
[PT] Molar Mass of H - 1.01 g/mol
[PT] Molar Mass of Cl - 35.45 g/mol
Molar Mass of Mg(OH)₂- 24.31 + 2(16.00) + 2(1.01) = 58.33 g/mol
Molar Mass of MgCl₂ - 24.31 + 2(35.45) = 95.21 g/mol
Step 3: Stoichiometry
Set up conversion: [tex]\displaystyle 255 \ g \ Mg(OH)_2(\frac{1 \ mol \ Mg(OH)_2}{58.33 \ g \ Mg(OH)_2})(\frac{1 \ mol \ MgCl_2}{1 \ mol \ Mg(OH)_2})(\frac{95.21 \ g \ MgCl_2}{1 \ mol \ MgCl_2})[/tex]Multiply/Divide: [tex]\displaystyle 416.227 \ g \ MgCl_2[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
416.227 g MgCl₂ ≈ 416 g MgCl₂
Which of the following is a correct description of energy transfer within an endothermic reaction?
Answer:Endothermic reactions draw heat into the reaction. Heat is transferred from the surroundings into the reaction. The reaction heats up while the surroundings cool down.
Explanation: ice melting in a glass of water would be an example of an endothermic reaction. The ice pulls heat from the water, cooling the water down, but causing the ice to heat up making the ice melt.
Helppp meee plzzzz!!!
Answer:
Some animals use echos for communication, Wolves listen to each others howls with echos to find each other if they ever get seperated.
Explanation:
Your welcom :)
Which of the following elements can replace Zinc in a single replacement reaction?
-Cobalt (Co)
-Magnesium (Mg)
-Chromium (Cr)
-Gold (Au)
Answer:
mqgnesium
Explanation:
if ur gonna question my knowledge dont ask for it. just trust
Which of the following operations usually makes a substance dissolve faster
in a solvent (select ALL that apply)?
A.raising the temperature
B.lowering the temperature
C.agitation
D.crushing the substance to a powder
Answer:
I think it is agitation
Explanation:
A specific characteristic, such as blue eyes, is known as a
Answer: simple genetic trait
Explanation:unless you have answer choices that would be my answer
Answer:
Genetic Traits
Explanation:
This is proven because if your parents both have blue eyes your percentage of have blue eyes is way more then if your parents don't
A-Gas is:
1. a superheated form of matter where electrons are ripped away from atoms creating this soupy form of matter
2. an intermediate state of matter that flows to the lowest point in a container and takes the shape of the container without changing volume
3. a state of matter with closely packed particles that CANNOT move about freely within the substance but have a stable volume and shape
4. a state of matter that has NO fixed shape or volume, has freely spaced particles with a lot of empty space between them giving it energy
Answer:
The "right" answer is 4. When matter is a gas, the particles flow freely, having no fixed shape or volume and contain a lot of extra space between particles.
However the last part, "...with a lot of empty space between them giving it energy" is (I'm fairly certain) incorrect. The relationship is the other way. Energy is added to the system, causing the particles to move more, thus building up the space between them.
A mouse has 20 chromosomes. If one of its cells goes through mitosis, how many cells would be present after mitosis?
Answer:
22
Explanation:
when a cell goes through mitosis, it duplicates the amount of its subcellular structures, so it will create 2 more clones. So before it was 20, but one goes through mitosis and preduces two more daughter cells, meaning 22.
Answer:
22
Explanation:
its 22
The energy transformations are similar because they both involve transformations that
begin with chemical energy.
begin with electrical energy.
result in radiant energy.
result in mechanical energy.
Answer:
C) that result in radiant energy
Explanation:
got it right on edge 2022
Answer:
c
Explanation:
Structural Formulas for Covalent Molecules
Is anyone good at doing these because I am so confused
1) C2H4
2) C3Cl8
3) SCl2
4) HClO2
5) HNO2
6) H2SeO3
7) H2S2
8) C2H6O2
9) C2H7N
10) C2NH3
11) C2PSH3
12) CH2O2PN
13) C2H2S
14) CH2O
15) N2H2
Answer:
CFJA17THZ561GJA561GH68N461DG56BSJ57
HOPE IT HELPS THANK ME LATER.
What pressure is required to compress 196.0 liters of air at 1.83 atmosphere into a cylinder whose volume is 26.0 liters
Answer:
P₂ = 13.79 atm
Explanation:
Given data:
Initial volume = 196.0 L
Initial pressure = 1.83 atm
Final volume = 26.0 L
Final pressure = ?
Solution:
The given problem will be solved through the Boyle's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
1.83 atm × 196.0 L = P₂× 26.0 L
P₂ = 358.68 atm. L / 26.0 L
P₂ = 13.79 atm
HELPPP!! Which describes one feature of the image formed by a convex mirror?
same size as the object
a real image
upside down
right side up
Answer:
The correct answer is - right-side up.
Explanation:
A diverging mirror is a curved mirror that can be bulge outside towards the source of light called a convex mirror or inward away from the source of light called a concave mirror.
A convex mirror is a mirror that forms an image bigger and but right side up or exact as the object direction also called a virtual image. It appears to be bigger than the real object and not upside down as concave mirrors.
Answer:
D. Right side up
Explanation:
EDGE 2021 YEAHHHHH CAUSE ITS THE REAL ANSWER
whats the relationship between lichens and quality
Answer:
Lichens love clean air
Explanation:
Lichens love clean air too - in fact, their sensitivity to air pollution means they make great air quality indicators. Like small signposts, these curious organisms can tell us a lot about the air we are breathing.
6) Which of the following is the highest pressure?
A. 1000 atm
b. 1000 mmHg
C. 1000 torr
TRUE OR FALSE if all the bonds in a molecule are polar the molecule is a polar molecule
Answer: False
Explanation:A polar molecule always contains polar bonds, but some molecules with polar bonds are nonpolar.
How often do girls normally experience menstruation a.once every 30 days b. once every 29 c.once every 28 d.once every 27
pa sagot po pls .pag na sagot nyo bibigyan ko kayo ng 5 point stars and heart .promise po basta pasagot lang po
Answer:
i think answer is a, every 30 days
Answer:
Once every 28 days
Explanation:
I am not 100% sure because i am not female but i do remember that in my health class it said it was once every 28 days
can you help me balance this
Balanced equation
Mg₃(PO₄)₂ + 2Al(NO₃)₃ → 3Mg(NO₃)₂ + 2AlPO₄
Further explanationGiven
Reaction
Mg3(PO4)2 + Al(NO3)3 → Mg(NO3)2 + AlPO4
Required
Balanced equation
Solution
Give a coefficient :
Mg₃(PO₄)₂ + aAl(NO₃)₃ → bMg(NO₃)₂ + cAlPO₄
Make an equation :
Mg, left = 3, right=b⇒b=3
P, left=2, right=c⇒c=2
Al, left=a, right=c⇒a=c⇒a=2
The reaction becomes :
Mg₃(PO₄)₂ + 2Al(NO₃)₃ → 3Mg(NO₃)₂ + 2AlPO₄
HELP 20 Points? thank u guysssss
Answer:
The answer is A. Chemical
Explanation:
Have a nice day
Answer:
Chemical i think i tried googling to figure it out
Explanation:
why the times of moonrise for full and new moon are inverted.
Thank you :)
Choose one example and describe the appearance of the adult and their young?
You have 9.3 mL of a 0.031 M solution of NaOH. If you add this solution to 8.5 mL of a 0.012 M solution of crystal violet, what is the initial concentration of NaOH in the reaction mixture?
Answer:
0.016M is the initial concentration of NaOH in the reaction mixture
Explanation:
The NaOH is diluted from 9.3mL to 9.3mL + 8.5mL = 17.8mL. That is a dilution of:
17.8mL / 9.3mL = 1.914 times
As the initial concentration of the NaOH solution is 0.031M and is diluted 1.914 times, the final concentration of the NaOH solution is:
0.031M / 1.914 =
0.016M is the initial concentration of NaOH in the reaction mixture
Finish the following word equation.
calcium + nitric acid →
How many inner shell electrons does beryllium have?
How many formula units are in 1.50 moles of NaCl?
Answer:
0.017
Explanation:
What does the cardiovascular system do
for the human body?
Answer: The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body.
Explanation:
Why is it important that sulfur dioxide is not released into the atmosphere?
Answer:
Acid rain.
Explanation:
What form is the carbon prior to the lion eating the giraffe?*
1 point
Carbon dioxide
Sugar
Nitrogen
Answer:
Sugar
Explanation:
The carbon is in form of sugar prior to the lion eating the giraffe. This form of carbon in the giraffe serves as a rich source of nutrient for the lion.
The carbon enters living organisms as carbon dioxide. As it enters, it is converted by plants into glucose, a from of sugar.
When giraffes eats the glucose in plant, it is stored in them and used for the liberation of energy
This same stored chemical energy in the giraffe is taken up by the lion.
The table above shows the ionic charges of several elements. Which element listed below is most similar to oxygen (O) in that it will form an ion with a 2- charge?
A. Phosphorus (P)
B.Helium (He)
C. Beryllium (Be)
D. Sulfur (S)
Answer:
Long range
Explanation:
A. But not too sure
Ions can be made by single element or covalently bonded group of elements. The covalently bonded group of elements is called polyatomic ions or polyatomic atoms. Therefore, the correct option is option D.
What is Ions?Any species that contain charge whether it is positive charge or negative charge is called ions. The example of polyatomic ions are sulfate, phosphate, nitrate etc.
Cation ion is the species that loose electron and attain positive charge while anion is a species which gain electron and attains negative charge so when anion and cation combine in fixed ration the the overall charge of the molecule is zero that is molecule is neutral, the charge over cation and anion is also called oxidation state. Sulfur (S) exist as S⁻² as ion which is similar to O²⁻.
Therefore, the correct option is option D.
To learn more about ions, here:
https://brainly.com/question/13692734
#SPJ6
Can somebody help me with this math.
2. If you start with 20.3 g of NH_NO3, how many grams of O, will be produced? Nuore also no
Answer:
12.18g
Explanation:
You start with a mass of 20.3g of NH₄NO₃
We need to determine from this compound the mass of oxygen that is therein.
First, find the molar mass of the compound;
NH₄NO₃ = 14 + 4(1) + 14 + 3(16) = 80g/mol
So;
Mass of oxygen = [tex]\frac{48}{80}[/tex] x 20.3 = 12.18g
Since in a chemical reaction, mass is always conserved, 12.18g of oxygen is produced.