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The conversion factor between atoms and moles is Avogadro's number: 6.02 x 1023 "things" / mole
To convert moles to atoms:
atoms B = 2.47 mol B6.02 x 1023 atoms B = 1.49E+24 atoms B
1 mol B
Multiply by atoms per mole. Moles cancel out.
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What two number have a sum of 645 and a difference of 151 the larger number is somewhere between the range of 392 to 402?
Let the two numbers be represented by 'a' and 'b'. Then, a + b = 645 And a - b = 151............adding these two eqations together gives :- 2a = 796 : a = 398..........and b = 645 - 398 = 247 (or b = 398 - 151 = 247).
Balanced chemical equations imply what a. Numbers of molecules are conserved b. Numbers of atoms are conserved c. Volume is conserved d. a and b or e. b and c?
jj
How many rectangles have the perimeter of 24cm?
Infinitely many. Let B be any number less than 6 cm, and let L = 12-B cm. Then the perimeter of the rectangle, with length L and breadth B, is 2*[L+B] = 2*[(12-B)+B] = 2*12 = 24 cm. There are infinitely many possible values for B, between 0 and 6 and so there are infinitely many possible rectangles.
How many different rectangles have a perimeter of 24 gronks?
There are infinitely many such rectangles.Consider any positive number, B which is less than 6 gronks. Let L be 12-B gronnks. Then L > 6 and so no ordered pairs (L, B) will be equal to a (B, L).Any rectangle with length L gronks and breadth B gronks will have a perimeter of 2*(L+B) = 2*12 = 24 gronks.Since the choice of B was arbitrary there are infinitely many choices for B and since each value of B gives a unique rectangle, there are infinitely many rectangles.As many as you want.
How many lines of symmetry does the letter B have?
The letter B has one set of line symmetry.The top of the B and the bottum.
What is the mole ratio that can convert from moles of a to moles of b?
a moles (b moles/a moles) = b moles
How many atoms are in 15.8 moles of boron?
15.8 mol B = 9.51 X 1024 atoms.15.8 mol (6.02 X 1023/ 1 mol) = 9.5116 X 1024
How many atoms of oxygen are contained in each what How many oxygen atoms in 21 g of O2 How many oxygen atoms in 0.812 moles MgO How many oxygen atoms in 3.2 x 1022 molecules of C6H12O6?
a. number of atoms = mass / molar mass x avagadros number 21/16x6.02x1023=7.9x1023 atoms b. number of atoms = moles x avagadros number 0.812x6.02x1023=4.89x1023 atoms as there is 1 O atom in each molecule of MgO, there are 4.89x1023 atoms of Oxygen. c. if there are 3.2x1022 molecules and 6 oxygen atoms in each molecule then: (3.2x1022)x6=1.92x1023 Oxygen atoms.
How many moles are in CF2Cl2?
Well, there are 140 grams of 2Cl2 in one mole of it. You take the atomic mass and find how many atoms and multiply them together. Chlorine has an atomic mass of about 35, so multiply by four b/c there are four Cl atoms in 2Cl2 .
What would you multiply atoms of boron by to get the units grams of boron?
There is no direct relationship between atoms of boronand grams of boron. Use Avogadro's number to convert atoms to moles, and the atomic mass to convert moles to grams.Since you are converting from atoms B, this goes in the denominator (on the bottom) of the first factor. You want to end up in units of grams of B, so this goes in the numerator (on the top) of the last factor.atoms B1.00 mole B10.8 gram = g B6.02E+23 atom B1.00 mole BNote that the units atoms boron "cancel out" in the first factor and you are left in units of moles. Moles cancel outin the second factor and the final units are grams boron.
What is the mass of a boron sample which contains 585 moles of b atoms?
Each mole of boron atoms has a mass of 10.811 grams, as indicated by the gram atomic mass or weight of boron. Therefore, 585 moles has a mass of about 6.32 X 103 grams, to the same number of significant digits as 585.
How many moles of fluorine in 3 moles of borontrifluoride?
Boron trifluoride is BF3. So each mole of BF3 contains 1 moles of boron (B) and 3 moles of fluorine (F). Thus, 3 moles of BF3 contains NINE moles of fluorine.
How many moles of tungsten atoms are in 4.8x10 25 atoms of tungsten?
The answer is B, 8.0 x 10^1 There are 6.023 x 10^23 atoms in one mole, of any substance. So simply divide 4.8 x 10^25 by 6.023 x 10^23, to get about 79.69 which if you convert into scientific notation, is about 8.0 x 10^1 the answer for me was A but that's on novanet
How many moles in 31.78G of Boron?
The atomic mass of B is 10.8Amount of B = mass of pure sample/molar mass = 31.78/10.8 = 2.94mol There are 2.94 moles of the element boron in a 31.78g pure sample.
If 2 moles of sodium sulfate are dissolved in water how many moles of ions are in solution a- 2 b- 3 c- 6 d- 15?
2
Consider the hypothetical reaction 3A2 2B-----C 2D How many moles of D can be formed from 5.00 moles of A2 and excess B?
1.7 mol 1.7 mol
Why is the reaction limited by the amount of one substance?
To answer that question we need a reaction, for example I will use this one. 2 A + 4 B --> 2 AB2 Imagine having 10 moles of A and 100 moles of B Once your 10 moles of A have been used up (along with 20 moles of B), you will be stuck with 80 B, without A, it will not react. Therefor it is limited (in this case) by the amount of A.
