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How many ATOMS of silicon are present in 6.54 grams of silicon dioxide?
Wiki User
∙ 10y ago
First let's calculate the formula mass of SiO2. It is 28.1 + 2(16.0) = 60.1. The amount of SiO2 can be calculated as 6.54/60.1 = 0.109mol. Now in one formula unit of SiO2 there is one Si atom. So, the amount of Si atoms present is 0.109mol. To get the numerical quantity, multiply it by the Avogadro's constant, and we get 0.109 × 6.02 × 10^23 = 6.55 x 10^22 atoms
Wiki User
∙ 9y ago
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How many grams of silicon would there be in a sample that contained 9.99 x 1025 atoms?
The mass of silicon is 4 659 g.
How many moles are there in 5 grams of silicon dioxide?
number of moles=mass/molar mass =5/(28+32) =0.83 mol
How many potassium atoms are present in .01456 grams of potassium?
.01456 g (6.02 x 1023 atoms) / (39.1 g) = 2.24 x 1020 atoms
How many oxygen atoms are in 52.06g of carbon dioxide?
52.06 grams carbon dioxide (1 mole CO2/44.01 grams)(2 mole O/1 mole CO2)(6.022 X 10^23/1 mole O) = 1.425 X 10^24 atoms of oxygen --------------------------------------------
How many grams of oxygen are in 10.00x1028 molecules of silicon dioxide?
10.00 X 10^28 = 1.0 X 1^29 ( always use scientific notation in chemistry ) 1.0 X 10^29 molecules silicon dioxide (1 mole SiO2/6.022 X 10^23)(2 mole O/1 mole SiO2)(16.0 grams/ 1 mole O) = 5.3 X 10^6 grams of oxygen
How many grams of sand are needed to make 45 grams of silicon?
96,27 g of sand contain 45 g of silicon (if the sand is pure silicon dioxide).
Why is silicon dioxide used in Pam baking spray?
40 grams
How many grams of silicon would there be in a sample that contained 9.99 x 1025 atoms?
The mass of silicon is 4 659 g.
How many silicon atoms are there in 1.00 g of silicon?
Silicon is a common metalloid which is a chemical element but it is considered to be tetravalent metalloid which has only 4 available electrons for covalent chemical bonding in its valence region. In the periodic table, Silicon has atomic number 14 with Si symbol. It is good to know that silicon is less reactive that Carbon-14 based on its position in the periodic table which is in the bottom of Carbon. The Standard Atomic Weight for Silicon is 28.0855 grams. The standard is based on the Avogadro's Constant which is 6.02214179 x 1023 mol-1. 1 mol of silicon will contains 6.02214179 x 1023 atoms of silicon. So, how many atoms are present in 1 gram of silicon? In 1 mol silicon (28.0855 grams) = 28.0855/28.0855 x 6.02214179 x 1023 = 6.02214179 x 1023 atoms In 1 gram silicon = 1/28.0855 x 6.02214179 x 1023 = 2.144217404 x 1022 atoms
How many atoms of silicon are contained in 8.5 x 10-5gm?
8.5 X 10^-5 grams silicon (1mol Si/28.09g)(6.022 X 10^23/1mol) = 1.8 X 10^18 atoms of silicon
How many atoms are in 65.6 g silicon?
The molar mass of Silicon is 28.09g Therefore if you have 65.6g, you divide that mass by 28.09g. 65.6g/28.09g = 2.34 mols. For atoms, you multiply that number by 6.02 x 1023. So 2.34 x 6.02 x 1023 = 1.41 x 1024.
How many oxygen atoms are present in 1.659 grams of ozone gas?
1.659 [grams] / 47.998 [grams / mol] * 6.02214179(30)×1023 [molecules / mole] * 3 [atoms / molecule]. A bunch.
How many atoms are there in 6.26 g Si?
.250 mole 7.02 ------ 28.09 = .250
How many Si atoms in 12.5 g sample of silicon?
Silicon is a common metalloid which is a chemical element but it is considered to be tetravalent metalloid which has only 4 available electrons for covalent chemical bonding in its valence region. In the periodic table, Silicon has atomic number 14 with Si symbol. It is good to know that silicon is less reactive that Carbon-14 based on its position in the periodic table which is in the bottom of Carbon.The Standard Atomic Weight for Silicon is 28.0855 grams. The standard is based on the Avogadro's Constant which is 6.02214179 x 1023 mol-1. 1 mol of silicon will contains 6.02214179 x 1023 atoms of silicon. So, how many atoms are present in 12.5 gram of silicon?In 1 mol silicon (28.0855 grams) = 28.0855/28.0855 x 6.02214179 x 1023 = 6.02214179 x 1023 atomsIn 12.5 gram silicon = 12.5/28.0855 x 6.02214179 x 1023 = 2.680271755 x 1023 atomsRead more: How_many_silicon_atoms_are_there_in_1.00_g_of_silicon
How many hydrogen atoms are present in 3.65 grams of water?
3.65 grams of water is equal to .203 moles of H2O. This means there is also .203 moles of H2 present, or .408 grams.
How many moles are there in 5 grams of silicon dioxide?
number of moles=mass/molar mass =5/(28+32) =0.83 mol
How many potassium atoms are present in .01456 grams of potassium?
.01456 g (6.02 x 1023 atoms) / (39.1 g) = 2.24 x 1020 atoms
