6. how many grams are in 4 moles of Be (OH)3?
7.How many atoms are in 4 moles of C6H12O6?
8.how many moles are in 12.04x10 23 to the power molecules of hamburgers?
9. how many molecules are in grams of Helium gas (He2)? hint:convert then moles then moecules
6. g = mols x molar mass.
7. 24 atoms in 1 mol; therefore, atom in 4 mols must be .....?
8. There are 6.02E23 things in a mole of things.
9. You didn't list any grams. But here is what you do.
mols = grams/molar mass.
Then mols x 6.02E23 = # molecules.
6. Well, Be (OH)3 sounds like a party, but let's not get too excited. To find the number of grams in 4 moles of Be (OH)3, we need to multiply the molar mass of Be (OH)3 by 4. Bear with me, things might get a bit atomic here. The molar mass of Be (OH)3 is approximately 43 grams per mole, which means that 4 moles of Be (OH)3 would weigh around 172 grams.
7. Ah, C6H12O6, also known as glucose. How sweet! To determine the number of atoms in 4 moles of C6H12O6, we need to channel our inner chemist. First, let's count the number of atoms in one molecule of C6H12O6. We have 6 carbon (C) atoms, 12 hydrogen (H) atoms, and 6 oxygen (O) atoms. Multiply these by 4 to get 24 C atoms, 48 H atoms, and 24 O atoms. Now, let's combine them all and do a little math dance. So, in 4 moles of C6H12O6, we would have about 2.56 x 10^24 atoms.
8. Ah, hamburgers! A favorite among many. Now, to answer this question, we need to convert those molecules to moles. Given that there are 12.04x10^23 molecules of hamburgers, we can divide this number by Avogadro's constant (6.022 x 10^23) to get approximately 2 moles of burgers. That's right, you've got a double serving of moles to devour!
9. Helium gas (He2)? That's an interesting combination! To determine the number of molecules in grams of helium gas, we need to follow the same dance routine as before. First, we convert grams of helium gas to moles using its molar mass. Helium (He) has a molar mass of 4 grams per mole, so divide the given grams by 4 to find the number of moles. Then, we can use Avogadro's constant (6.022 x 10^23) to convert moles to molecules. Multiply the number of moles by Avogadro's constant to find the approximate number of molecules. Voila!
6. To calculate the number of grams in 4 moles of Be(OH)3, we need to know its molar mass.
The molar mass of Be(OH)3 can be calculated by adding up the atomic masses of each element present:
Be: 9.01 g/mol
O: 16.00 g/mol (three atoms in Be(OH)3)
H: 1.01 g/mol (three atoms in Be(OH)3)
Molar mass of Be(OH)3 = 9.01 g/mol + 16.00 g/mol + 1.01 g/mol * 3 = 61.04 g/mol
Now we can find the total grams of 4 moles of Be(OH)3:
Total grams = 4 moles × 61.04 g/mol = 244.16 grams
Therefore, there are 244.16 grams in 4 moles of Be(OH)3.
7. To calculate the number of atoms in 4 moles of C6H12O6, we need to use Avogadro's number.
Avogadro's number is approximately 6.022 × 10^23 atoms/mol.
So, the number of atoms in 4 moles of C6H12O6 can be calculated as:
Number of atoms = 4 moles × 6.022 × 10^23 atoms/mol = 2.409 × 10^24 atoms
Therefore, there are 2.409 × 10^24 atoms in 4 moles of C6H12O6.
8. To calculate the number of moles in 12.04 × 10^23 molecules of hamburgers, we again need to use Avogadro's number.
Avogadro's number is approximately 6.022 × 10^23 molecules/mol.
So, the number of moles can be calculated as:
Number of moles = (12.04 × 10^23) / (6.022 × 10^23 molecules/mol) = 2 moles
Therefore, there are 2 moles in 12.04 × 10^23 molecules of hamburgers.
9. To calculate the number of molecules in a given mass of helium gas (He2), we need to follow the steps mentioned in the hint.
First, we convert the given grams to moles of helium gas.
The molar mass of helium (He) is approximately 4.00 g/mol.
Moles of helium gas = Given grams / Molar mass
Let's say the given mass is 10 grams.
Moles of helium gas = 10 g / 4.00 g/mol = 2.5 moles
Next, we convert moles to molecules using Avogadro's number.
Avogadro's number is approximately 6.022 × 10^23 molecules/mol.
Number of molecules = Moles of helium gas × Avogadro's number
Number of molecules = 2.5 moles × 6.022 × 10^23 molecules/mol = 1.505 × 10^24 molecules
Therefore, there are approximately 1.505 × 10^24 molecules in 10 grams of helium gas (He2).
To answer these questions, we need to use the concept of moles and Avogadro's number.
6. To calculate the number of grams in 4 moles of Be(OH)3, we first determine the molar mass of Be(OH)3.
The molar mass is calculated by adding up the atomic masses of each element in the compound.
Be(OH)3 consists of one beryllium (Be) atom with a molar mass of 9.01 g/mol, and three hydroxide (OH) groups. The molar mass of an OH group is calculated by adding the atomic masses of one oxygen (O) atom (16.00 g/mol) and one hydrogen (H) atom (1.01 g/mol) together, resulting in a molar mass of 17.01 g/mol.
So the molar mass of Be(OH)3 is:
(1 * 9.01 g/mol) + (3 * 17.01 g/mol) = 9.01 g/mol + 51.03 g/mol = 60.04 g/mol.
Now, to find the grams in 4 moles, we multiply the molar mass by the number of moles:
4 moles * 60.04 g/mol = 240.16 grams.
Therefore, there are 240.16 grams in 4 moles of Be(OH)3.
7. To determine the number of atoms in 4 moles of C6H12O6 (glucose), we use Avogadro's number, which is 6.022 × 10^23 atoms/mol.
C6H12O6 consists of 6 carbon (C) atoms, 12 hydrogen (H) atoms, and 6 oxygen (O) atoms. Therefore, the total number of atoms in C6H12O6 is 6 + 12 + 6 = 24.
To find the number of atoms in 4 moles of C6H12O6, we multiply Avogadro's number by the number of moles and the number of atoms in the compound:
4 moles * 6.022 × 10^23 atoms/mol * 24 atoms = 1.45 × 10^25 atoms.
So, there are approximately 1.45 × 10^25 atoms in 4 moles of C6H12O6.
8. To determine the number of moles in 12.04 × 10^23 molecules of hamburgers, we need to convert the given number of molecules into moles using Avogadro's number.
Avogadro's number states that there are approximately 6.022 × 10^23 particles (atoms, molecules, or ions) in one mole of any substance.
So, to find the number of moles, we divide the given number of molecules by Avogadro's number:
(12.04 × 10^23 molecules) / (6.022 × 10^23 molecules/mol) = 2 moles.
Thus, there are 2 moles in 12.04 × 10^23 molecules of hamburgers.
9. To determine the number of molecules in a given mass of helium gas (He2), we'll follow the hint provided and convert from grams to moles, and then from moles to molecules.
First, we need to find the molar mass of helium (He). The atomic mass of helium is 4.00 g/mol since its atomic mass number is 4.
To convert the given grams of helium to moles, we divide the mass by the molar mass:
Given mass / Molar mass = Moles
Given mass of helium / 4.00 g/mol = Moles
Once we have the number of moles, we can convert to molecules using Avogadro's number:
Moles * Avogadro's number = Molecules
Please provide the mass of helium gas (He2) in grams to proceed with the calculations.