Answer
no. of moles =
[tex] \frac{mass \: {g} \: }{ \: molecular \: wight} [/tex]
so, mass (g)= no. of moles × molecular wight
Explanation:
Li molecular wight equal to 6.941
mass (g)=3.29×104 mol ×6.941 =2374.93g of lithium
Does anyone know this one?
This part is just telling you what they mean by hallowed be Your name is
Hope this helps :))
How many aluminum atoms are found in 8.57 moles of aluminum?
Answer:
1.02 10 to the 23 power(or 100,000,000,000,000,000,000,000)
atoms of AL
Explanation:
ive had this question before
Would a hurricane more likely remain a hurricane if it reached point A or point B? Explain your answer.
Answer:
B
Explanation:
Water gives more energy to the hurricane, so it would stay as one. If the hurricane hits the land, it will start getting smaller till it disappears.
How many moles of 02 should be supplied to burn 1 mol of C3H8(propane) molecules in a camping stove?
Answer:
This tells you that when 1 mole of propane undergoes combustion, 3 moles of carbon dioxide are produced. You can thus say that when 2.0 moles of propane react, you will get 2.0moles C3H8 ⋅ 3.moles CO2 1mole C3H8 = 6.0 moles CO2
Explanation:
Suppose you spill a few drops of sulfuric acid solution on your sleeve, but there is no visible harm. Can you be confident the fabric is safe
Answer:
No
as they are dispensed, during use, and as they are discarded
Explanation:
Suppose you spill a few drops of sulfuric acid solution on your sleeve, but there is no visible harm.
Can you be confident the fabric is safe?
No
The best way to protect yourself from such mishaps is to be mindful of the acid and base solutions
as they are dispensed, during use, and as they are discarded
Radiation takes place with________ between a heat source and an object.
type your answer in the blank
Answer:
radiation takes place with energy between a heat source and an object
Explanation:
g o o g l e
This is the probability distribution of an electro in a atom or molecule
Answer:
electron orbitals (okay nayn manghula kana Lng)
what is the color of indicator for battery acid, water, vinegar, soda pop, shower (ammonia) cleaner and liquid drain cleaner
Which is an example of an accurate manipulation of the ideal gas law?.
The correct manipulation of the ideal gas equation as shown here is (PV)/R=nT.
What is the ideal gas law?
According to the ideal gas law; PV = nRT. Now, this law applies to gases at high temperature and low pressure.
Given this fact, we know that the correct manipulation of the ideal gas equation as shown here is (PV)/R=nT.
Missing parts;
Which is an example of an accurate manipulation of the Ideal Gas Law and explain why?
(PV)/R=nT 1
PV=(nT)/R 2
PV=(RT)/n 3
PV=(nR)/T 4
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Which of these words best describes conditions on the moon?
A - dry
B- windy
C- hot
D- rocky
E- bumpy
the conditions on the moon are most likely bumpy
How many moles are in 8.30 X 10^23 molecules of KCI?
Answer:
No. of moles = no. of given molecules/NA
No. of moles = 8.3 × 10^23 / 6.023 × 10^23
= 1.3780 moles
Explanation:
what mass of NaNo3 is needed to make 400mL of a 0.3M solution? (molar mass = 84.99)
What is the core of the earth made of?
Answer:
The core of the earth is made of iron-nickel alloys.
How many grams of potassium sulfate must be added to make 200. mL of a 0.200 M potassium sulfate solution
Answer: 6.97 g
Explanation:
Grams of potassium sulfate must be added to make 200. mL of a 0.200 M potassium sulfate solution are 6.96.
What is Molarity?Molarity of a given solution is known as the total number of moles of solute per litre of the solution. A solution that is 1.00 molar (written 1.00 M) contains 1.00 mole of solute for every liter of solution.
Molarity = (No. of moles of solute ÷ Volume of solution in liters)
The unit of molarity is mol L⁻¹.
Molarity is temperature dependent because as temperature changes, volume of the solution also changes.
No. of moles of solute = 0.04
Mass of potassium sulfate = 174.2 × 0.04
Mass of potassium sulfate = 6.96 grams
Therefore, Grams of potassium sulfate must be added to make 200. mL of a 0.200 M potassium sulfate solution are 6.96.
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5. When baking cookies, it is important to correctly identify the white granular substance you are
putting into the cookies. Instead of sugar, my grandma put 97.21 grams of salt (NaCl) in her
batch of cookies! How many moles of salt were in the cookie dough?
Answer:
I multiply 97.21 by the amount of cookies you have.
Explanation:
i dont know if this is correct but i multiplyed it by two and got 194.42
why is it important to control the non-tested variables in an experiment?
Answer:
In experiments, a researcher or a scientist aims to understand the effect that an independent variable has on a dependent variable. Control variables help ensure that the experiment results are fair, unskewed, and not caused by your experimental manipulation.
Explanation:
I hope this helps out.
An unknown amount of gas has a volume of 12 L and a pressure of 5.6 atm. If the temperature is 205K, how many moles of gas are present
The number of moles of the gas present is 4 moles.
To calculate the numbers of moles of the gas present, we use the formula below.
Formula:
PV = nRT............. Equation 1Where:
P = PressureV = Volumen = Number of moles of the gasR = molar gas constantT = Temperature.Make n the subject of the equation
n = PV/RT............ Equation 2From the question,
Given:
P = 5.6 atmV = 12 LT = 205 KR = 0.0821 L.atm.K⁻¹.mol⁻¹Substitute these values into equation 2
n = (5.6×12)/(0.0821×205)n = 67.2/16.8305n = 3.99n ≈ 4 molesHence, the number of moles of the gas present is 4 moles.
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what is the relationship between sign of a charge and the direction of electrostatic force
Answer:
The direction of the force vector depends on the sign of the charges. If the charges are the same, the force points away from the other charge.
Explanation:
What are three ways to increase the rate of solvation.
Answer:
The rate of solvation is depends on temperature and surface area. Increasing the temperature of the solvent increases the rate of solvation. Increasing the surface area of the solute increases the rate of solvation. Also, agitating the system increases the rate of solvation.
Explanation:
hope this helps.
A 2000 g sugar-water solution contains 200 g of sugar. The concentration of the solution by mass is
a. 1%
b. 9%
c. 10%
d. 12%
Answer: the answer is letter c which is 1 percent
Explanation:
C. A sample of copper is 4.46 moles. Determine how many atoms your piece of metal
Contains
Answer:
[tex]2.686*10^{24}[/tex]
Explanation:
Avogadro's number, 10 x 10^{23}, represens the number of atoms in a single mole of any substance.
Since we already of have the mole amount and don't need to calculate that from the grams of the substance, we can simply multiple Avogadro's number by the amount of moles given.
[tex]4.46 *(6.022*10^{23}) = 2.686 * 10^{24}[/tex]
How many moles does 21. 7 L of gas at STP represent?
Answer:
.96875 moles
Explanation:
22.4 liters per mole at STP for a gas
21.7 / 22.4 = .96875 moles
If your sample of vinegar is approximately 4.76% (w/w), what volume should you use so that approximately 40 mL of 0.1 M NaOH is required to neutralize your sample of vinegar
Based on the concentrations given, the volume of vinegar required is 5.04 mL.
What is the concentration of the vinegar solution?The concentration of a solution is the amount of solute in a given volume of solution.
Concentration can be expressed as:
molar concentration percentage concentrationThe concentration of the vinegar solution is 4.76% (w/w). This means that 4.76 g of vinegar is present in 100 g of solution.
Mass of vinegar = 4.76 g
molar mass if vinegar = 60 g/mol
moles of vinegar = 4.76/60 = 0.0793 moles
volume of solution/water = 100 mL or 0.1 L
Molarity of vinegar = 0.0793/0.1 = 0.793 M
1 mole of vinegar reacts with 1 mole of NaOH
let the volume of vinegar required be V
0.793 M × V = 40 × 0.1
V = 4/0.793
V = 5.04 mL
Therefore, the volume of vinegar require is 5.04 mL.
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How are gypsum and selenite chemically similar? What makes them different?
Answer:
Gypsum and Selenite have the same chemical composition but differ in crystallisation habit. Selenite is usually crystalline and the association of the impurities is superficial which are eliminated by washing. Gypsum is fine grained in nature and is beneficiated by flotation only.
where are transition metals found in the periodic table?
Answer:
Middle
Explanation:
Transition metals are located in the middle of the Periodic table from group 3 to group 11.
Hope this helped!
- profparis
A student prepared a stock solution by dissolving 15. 0 g of koh in enough water to make 150. Ml of solution. She then took 15. 0 ml of the stock solution and diluted it with enough water to make water to make 65. 0 ml of a final solution. What is the concentration of koh for the final solution?.
weight of dissolving KOH is=10 g KOH molecular weight is= 56.1 moles
Have a nice day!
43. 5 g of cesium explosively reacts with water to form hydrogen gas and cesium hydroxide. How many moles of hydrogen gas were formed?
Answer:
See the attached images for solution.
Explanation:
If force of 6.0 N causes a 1.0 kg block to accelerate 4.0 m/s2 to
the right, then what is the force of friction acting on the block?
The force of friction acting on the block is -2N.
To find the force of a friction, the given datas are,
Force = 6N
Mass = 1 kg
Acceleration = 4 m/s².
What is the force of friction?The push or pull on an object that made the changes in the velocity with the mass. The object's or body's is to be at motion or at rest will be determined by Force. It has both the magnitude and direction.
The Net Force of the object can be written by:
Fnet = ma
where m is the mass of the object in kg
a is the acceleration of the object in m/s^2
Substituting the values in the formula,
Fnet = (1.0)(4.0)
= 4 N
We also know that Net force is also the sum of all forces acting on an object. In this case Friction and the Pushing Force is acting on the object. Hence we can write that:
Fnet = Pushing Force + (-Friction)
6N = 4 N - Friction
Friction = - 2N
Hence the force of friction is -2 N.
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naming ions worksheet
Answer:
I used to know this stuff but I don't remember it anymore
Why do metals tend to form cations and nonmetals tend to form anions?
Explanation:
here's the link to your answer
btly. 55/7