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How many grams are in one mole of water using 4 significant figures?
Wiki User
∙ 11y ago
1 mole H2O = 18.02g
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water is H2O ... 2 x 1.008 + 1 x 15.996 = 18.012 g/mole = 18.01 grams
Wiki User
∙ 11y ago
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How many moles of water are there in 100 grams of water?
First you find the Molar Mass of water using the values on the periodic table.2 Hydrogen + 1 Oxygen2*1.01 + 16.00 = 18.02 g/molThen using factor-label to cancel out units(100g H2O)*(1 mol H2O / 18.02 g H2O) = 5.54938957 molSo the number of moles in 100g of H2O is about 5.55 moles.Hope that helps.
How many grams of water can be produced from 50 grams of hydrogen and 300 grams of oxygen?
2H2 + O2 ===> 2H2O50 grams H2 x 1 mole H2/2 g = 25 moles H2300 grams O2 x 1 mole O2/32 g = 9.375 moles O2Limiting reactant is O2, so maximum moles of H2O formed = 9.375 O2 x 2H2O/1 O2 = 18.75 molesgrams H2O = 18.75 moles H2O x 18 g/mole = 337.5 g H2O = 340 g (to 2 significant figures)
What is the percentage concentration of a solution prepared by dissolving 5.48 grams of silver nitrate in 25.0 grams of water?
The percentage of silver nitrate by weight is 100[5.48/(5.48 + 25.0)] = 18.0 %, to the justified number of significant digits.
How many grams of propane react to produce 8.00 grams of water?
Assuming that the water is produced by complete combustion of propane, the balanced equation is: C3H8 + 5 O2 = 3 CO2 + 4 H2O. The gram molecular mass of propane is three times the gram atomic mass of carbon plus eight times the gram atomic mass of hydrogen = 3(12.011) + 8(1.008) = 44.097, and the gram molecular mass of water is the gram atomic mass of oxygen plus twice the gram atomic mass of hydrogen = 15.999 + 2(1.008) = 18.015. The balanced reaction equation shows that four molecules of water are produced for each molecule of propane, so that the ratio of grams of propane reacted to grams of water produced is 44.097/(4 X 18.015) = 0.61191, to the justified number of significant digits. Therefore, the amount of propane required to produce 8.00 grams of water = 8.00(0.61191) = 4.90 grams to the clearly justified number of significant digits, matching the three significant digits given for 8.00, or 4.895 grams, where the last digit is depressed because it may well not be accurate within + 1
If a 4.50 g of a compound will dissolve in 18.3 g of water how many grams of the compound will dissolve in 100 g of water?
This is a proportion problem. Call the unknown mass in grams of compound m. Then 4.50/18.3 = m/100; m =450/18.3 = 24.6 g, to the justified number of significant digits.
How can you measure 15 grams using spoons?
5 grams water is 1 teaspoon
The temperature of 15 grams of water is increased by 3.0 Celsius degrees How much heat in Joules was absorbed by the water?
I assume you mean 30o Celsius. Use this formula.q(joules) = mass * specific heat * change in temperatureq = (15 grams water)(4.180 J/gC)(40o C - 30o C)= 627 joules==========( perhaps 630 joules to be in significant figures territory )
What is the concentration of a solution of 24g of table salt dissolved in 2 L of water?
The most accurate answer is 0.2 mol/kg.Related Information:The number of significant figures in the final answer must be based on the given with the least number of significant figures which is 2L.
How do you encorportate significant figures when measuring the number of drops of water?
The answer depends on whether you are measuring the drops from a slow drip or the number of drops of water in an ocean!
What is the rule about significant figures?
1. All non-zero numbers are significant 2. Zeros between non-zero digits count 3. Zeros at the beginning of a number do not count 4. Zeros at the end of a number that does not have a decimal are not significant 5. Zeros at the end of a number with a decimal are significant
How much can the surface of tension of water hold?
Pure water can roughly hold 0.073 grams per cm at 20 degree Celsius.Impurities can change the figures.
How much weight can the surface tension of water hold?
Pure water can roughly hold 0.073 grams per cm at 20 degree Celsius.Impurities can change the figures.
What is the total mass in grams expressed in scientific notation with the correct number of significant figures of a solution containing 2.000 kg of water 6.5 g of sodium chloride and 47.546 g of?
2.000 = 2,000.000g 6.5 determines only one significant figure 2,000 + 6.5 + 47.546 = 2,054.046 which would be 2,054.0 In scientific notation that would equal 2.0540 * 103
How much heat is required to warm 1.60 L of water from 22.0 ∘C to 100.0 ∘C (Assume a density of 1.0g/mL for the water.) Express your answer in joules to two significant figures?
76231865367 water
How many moles of water are there in 100 grams of water?
First you find the Molar Mass of water using the values on the periodic table.2 Hydrogen + 1 Oxygen2*1.01 + 16.00 = 18.02 g/molThen using factor-label to cancel out units(100g H2O)*(1 mol H2O / 18.02 g H2O) = 5.54938957 molSo the number of moles in 100g of H2O is about 5.55 moles.Hope that helps.
How would you determine the density of 10 grams of granular zinc?
using water displacement because it doesnt float on water and it doesnt dissolve in water
How many grams of water are produced when 300 grams of hydrogen react with an unlimited amount of oxygen?
The atomic mass of hydrogen is 1.008 and the molecular mass of water, with formula H2O, is 18.015. Therefore, the mass of hydrogen to that of water has the ratio of 2(1.008)/18.015 = about 0.1119, and the answer to the problem is 300/0.1119 = 2.68 X 103 grams, to the justified number of significant digits.
