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What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common?
the answer is there number of atoms
How many grams are in 7.40 moles of magnesium hydroxide?
74 g magnesium (1 mole Mg/24.31 g)(6.022 X 1023/1 mole Mg)(1 mole Mg atoms/6.022 X 1023) = 3.0 moles of magnesium atoms ------------------------------------------- As you see Avogadro's number is over itself as a form of one, so only the moles of Mg need be found. This depiction is the formal set up.
In the reaction mgcl2 plus 2koh mg(oh)2 plus 2kcl How many moles are of mg(oh)2 are produced for every mole of mgcl2?
1
How many moles is 1.346g of Mg?
1.346 grams Mg (1 mole Mg/24.31 grams) = 0.05537 moles magnesium
How many atoms of carbon are in 500mg of Ibuprofen?
C13H18O2 500 mg ibuprofen (1 gram/1000 mg)(1 mole ibuprofen/206.274 grams)(13 mole C/1 mole ibuprofen)(6.022 X 10^23/1 mole C) = 1.90 X 10^22 atoms of carbon in that mass ibuprofen
Does a mole of Al and a mole of Mg have the same mass?
no it does not!
How many moles of Cl are in NaCl?
The formula weight of NaCl is 58.44 which means 58.44 g = 1 mole. Since 1000 mg = 1 g, this gives 58.44 g/mole x 1000 mg/g = 5.844 E+4 mg/mole. Then, 52.1 mg NaCl x 1 mole NaCl/5.844E+4 mg = 8.92 E-4 mole. See, this is just done by using the definitions of the units and the factor label method to analyze the conversion.
What do a mole of magnesium (Mg) and a mole of iron (Fe) have in common?
the answer is there number of atoms
How many grams in magnesium?
The atomic mass of magnesium (Mg) is approximately 24.305 grams per mole.
How many grams are in 7.40 moles of magnesium hydroxide?
74 g magnesium (1 mole Mg/24.31 g)(6.022 X 1023/1 mole Mg)(1 mole Mg atoms/6.022 X 1023) = 3.0 moles of magnesium atoms ------------------------------------------- As you see Avogadro's number is over itself as a form of one, so only the moles of Mg need be found. This depiction is the formal set up.
In the reaction mgcl2 plus 2koh mg(oh)2 plus 2kcl How many moles are of mg(oh)2 are produced for every mole of mgcl2?
1
How many moles of oxygen gas O2 needed to react with 4.00 mol of Mg?
Do you mean this reaction? 2Mg + O2 -> 2MgO 4.11 moles Mg (1 mole O2/2 mole Mg) = 2.06 moles oxygen gas consumed --------------------------------------------------
How many atoms in one gram of magnesium?
1 mole Mg = 6.022 x 1023 atoms 1 mole Mg = 24.3050g (atomic weight in grams) 1g Mg x (1mol/24.3050g) x (6.022 x 1023atoms/mol) = 2 x 1023 atoms (rounded to 1 significant figure)
How many moles is 1.346g of Mg?
1.346 grams Mg (1 mole Mg/24.31 grams) = 0.05537 moles magnesium
If 0.0276 g of Mg reacts with HCl how many moles of gas produced?
To calculate the moles of gas produced, first find the moles of Mg reacting by dividing the mass by the molar mass of Mg. Next, determine the mole ratio of Mg to gas produced from the balanced chemical equation of the reaction. Finally, multiply the moles of Mg by the mole ratio to find the moles of gas produced.
In the reaction MgCl2 plus 2KOH---Mg(OH)2 plus 2KCl how many moles of KOH react with 1 mole of MgCl2?
MgCl2 + 2KOH ==> Mg(OH)2 + 2KCl1 mole MgCl2 reacts with 2 moles KOH 2 moles KOH x 56.1 g/mole = 112.2 g KOH = 100 g KOH (to 1 significant figure based on 1 mole)
How many grams of oxygen are needed to react with 21.0 g of Mg?
The balanced chemical equation for the reaction between Mg and O2 is 2Mg + O2 -> 2MgO. This equation shows that 1 mole of Mg reacts with 1 mole of O2. The molar mass of O2 is 32 g/mol. Therefore, 21.0 g of Mg will react with 16.0 g of O2, which is 0.5 moles of O2.
