answersLogoWhite

0

Balanced equation.

2H2 + O2 >> 2H2O ( now find limiting reactant )

7 grams H2 (1 mole H2/2.016 grams) = 3.472 moles H2

60 grams O2 (1 mole O2/32 grams) = 1.875 moles O2

1.875 moles O2 (2 mole H2/1 mole O2) = 3.75 mole H2 ( checked O2, but I know H2 limits because you do not have 3.75 moles H2, so H2 drives reaction)

3.472 moles H2 (2 mole H2O/2 mole H2)(18.016 grams/1 mole H2O)

= 62.552 grams H2O produced, so;

58 grams/62.552 times 100

= 92.7% yield of H2O, call it 93%

User Avatar

Wiki User

14y ago

What else can I help you with?

Continue Learning about Chemistry

How many grams of NaCL are contained in 350mL of a 0.250M solution of sodium chloride?

To calculate the mass of NaCl in the solution, you need to first calculate the number of moles of NaCl present. You can use the formula: moles = concentration (M) x volume (L). Once you have the number of moles, you can convert it to grams using the molar mass of NaCl, which is 58.44 g/mol.


What is the normality of isotonic saline 85 percent NaCL?

NaCl (gmw=58g, valence=1) Grams of equivalent weight = 58/1 = 58grams so 1EQ/ 58grams=1 Normality is expressed in Eq/L With 1% defined as 1 gram per 100 ml, 85% is 85 grams per 100 ml (1EQ/58grams) * (85grams/100ml) * (1000ml/L) = 85000eq/5800L = 14.655 or 15N Although I don't think you were supposed to do 85%, for clinical chemistry it should be something more like 0.85% or the solution would be too hypertonic. In which case it would be (1eq/58grams)*(0.85grams/100ml)* (1000ml/L) = 850eq/5800L = 0.14655 or 0.15N FG 9/16/2012


How many atoms of sodium and chlorine are in table salt?

Table salt is Sodium Chloride (NaCl) - each molecule has one atom of sodium and one of chlorine. The rough number of atoms can be calculated from the total weight of the salt. NaCl weighs approximately 58g/mol and 1mol is approximately 6*1023 atoms, so the number of mollecules in a weighed sample of pure table salt is (6*1023)/58=0.103*1023W where W is the weight in grams. In one gram of NaCl, there are 10.3 billion trillion molecules and twice as many atoms split half Na and half Cl.


Related Questions

How much does a tennis ball weigh in grams?

A standard tennis ball weighs about 56g-58g.


How much saturated fat in a Twix?

For the standard 2 bar 58g pack - 0.25g salt


How many pounds is 58 grams?

58 grams is equivalent to approximately 0.13 pounds.


Are pistachios bad for you?

Not necessarily, although they are high in total fats ( 1 cup=58g of fat). They contain may health fats that help. Just try not to have a cup everyday !


What is the molecular mass of substance each molecule of which contain 4 carbon atoms and 10 hydrogen atoms.?

This would be C4H10 and the molecular mass is (12x4) +(1x10) = 48 + 10 = 58g/mole.


What is 58g in milliliter?

A gram is a unit of mass. A millilitre is a unit of capacity. Without some unit of density to compare, the two units are therefore incompatible.


Why is the 8g ipod touch only 7gb?

Pre loaded apps are already installed taking up space, the 8G only means the capacity of the memory chip, not how much space you have available. for example, i bought the 3rd Generation 64G i pod touch, it only had 58G when i turned it on.


How many calories are there in a Mars bar?

233 Calories in a 50 gram (1.76 ounce) serving. That's kilocalories, of course (kcal). There's a bit of confusion with the word calorie and "Calorie" is often used in nutrition to mean kilocalorie (more or less).


How many molecules of sodium chloride in 15g of sodium chloride this atomic mass of sodium is 23gmol and of chlorine is 35gmol?

The formula unit of sodium chloride has the formula NaCl, showing that each molecular unit contains one atom of each of its constituent elements. Therefore, the mass of the formula unit is 23 plus 35 or 57 amu. Each amu for a compound contains Avagadro's number of molecules. Therefore, the answer to the problem is about (15/57) X 6.022 X 1023 = 4.3 X 1022.


What is the mass number of NaCl?

The mass number of NaCl cannot be determined because there are two different elements involved: sodium (Na) and chlorine (Cl). Each element has its own unique mass number based on the sum of protons and neutrons in its nucleus.


How many grams of 5.4 mol of NaCl?

the molar mass of sodium is 23 and chlorine is 35 so they add together to create 58 grams per mole. So 5.58g/58g=.0962 moles.


How many grams of NaCL are contained in 350mL of a 0.250M solution of sodium chloride?

To calculate the mass of NaCl in the solution, you need to first calculate the number of moles of NaCl present. You can use the formula: moles = concentration (M) x volume (L). Once you have the number of moles, you can convert it to grams using the molar mass of NaCl, which is 58.44 g/mol.