0
How do you find the number of molecules present when the percent is given?
Wiki User
∙ 12y ago
If I have Z number of molecules total and 40% of that number is 88 then inorder to find Z I use this.
88 x 100/40 = Z
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Calculate the number of molecules given grams i.e how many molecules are there in 21.6 grams of CH4?
You would multiply the number of grams x Avogadro's number=number of molecules: (21.6g) X (6.022x10^23)= 1.301x10^25 molecules
How many molecules are there in 31.8 moles of water?
A number of atoms/molecules in a given number of moles is regardless of the substance unless it deals with stoicheometry. One mole represents a number of Avogadro's constant, approximately 6.022 x 10^23. Therefore there are 1.91 x 10^25 molecules of water in 31.8 moles.
How many moles of iodine molecules correspond to 1.80x1024 molecules of I2?
To get moles given representative particles, simply divide by Avogadro's number: 1.80x1024/6.02x1023 = approx. 3 moles I2.
Which chemical or element will have the largest number of molecules in a balanced equation?
There is no answerable version of this question, which asks about a certainequation not shown in the question.Further, there is no answerable form of the question. Generally the element that has the largest number of molecules depends on "valence" but all molecules in a given equation could have exactly the same number. There is no way to know.There are already questions that ask about this in answerable forms.
How many molecules are in 100 L of potassium hydroxide solution at STP?
The number of molecules in a given volume of solution depends on the concentration of the solute. Because the concentration is not provided, this question has too little information to answer.
How many oxygen molecules are there in in 4 g of oxygen?
Assuming you mean oxygen gas, the number of molecules can be found by first finding the number of moles = mass of oxygen (4g) / Molecular mass of oxygen gas (32 g mol-1) This tells us there is 0.125 mol of oxygen gas present. The number of molecules present is given by the number of moles x the avogadro constant (6.022x10^23) So the number of oxygen gas molecules present is equal to 0.125 x 6.022x10^23 = 7.5275x10^22 molecules
What does state of material depend on?
The state of matter depends on the number of atoms / molecules in a given area / volume. If there are more number of molecules, then it will be in solid state and if it is very less molecules then gases. This inturn may depend on the intermolecular force of attraction between the atoms in them. In the case of solids, the force of attraction is high and hence there are more number of molecules present.
The number of molecules in a given amount of volume is called what?
Density
Calculate the number of molecules given grams i.e how many molecules are there in 21.6 grams of CH4?
You would multiply the number of grams x Avogadro's number=number of molecules: (21.6g) X (6.022x10^23)= 1.301x10^25 molecules
What is the number of molecules that cross the membrane in a given length of time?
Flux
If 40 percent of a given number is 8?
The given number is 20 (8 divided by 40 then times 100).
36 is what percent of 150?
The formula for finding the percent is =The given number/Total number *100 Here the given number is 36 . The total number is 150 . Therefore Percent = 36/150*100=24%
39 is 40 percent of what number?
When a whole number is given- divide the percent given into the whole number and you will get the original number 39\40 should equal 97.5 great fun you should try it. Works every time.
What is 16 percent of 92?
the X percent of a number is given by x/100 times that number. So. 16 percent of 92 is: 16*92/100
Do molecules in water move slower in cold water?
Yes, the less heat there is present, the less heat, the slower the molecules will move. This is due to a lack of energy given from the heat.
When 40 percent of a number is added to the number the result is 182 what is the number?
130.The answer is given by 182/1.4
Does a gas have more moleules than a liquid?
No. The state of a substance does not tell the number of molecules present. In a gas, the molecules move more freely than in a liquid as they are not bound to each other by intermolecular forces. If you're going by volume, a given volume of a gas will generally contain fewer molecules except at very high pressures.
