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How many grams are in one mole of water using 4 significant figures?
1 mole H2O = 18.02g --- water is H2O ... 2 x 1.008 + 1 x 15.996 = 18.012 g/mole = 18.01 grams
How long is 5 grams?
Grams isn't a measurement of length; it is a measurement of weight.
How many GRAMS of magnesium fluoride are present in 4.78 moles of this compound?
The formula unit for magnesium fluoride is MgF2. From the periodic table, add the atomic weight of 1 magnesium atom and 2 fluorine atoms to get to get 62.3018. This means that 1 mole of MgF2 is 62.3018g of MgF2. Now, to find out the mass of 4.78 mol MgF2 X the g/mol so that you will cancel the moles, and keep the grams. 4.78 mol MgF2 X 62.3018g MgF2/1mol MgF2 = 297g MgF2 *The answer 297 is in keeping with significant figures. When you multiply or divide, the answer can have no more than the fewest significant figures in the calculation, which was 4.78, and which has only three significant figures.
What is 6.3 grams?
It is 0.0063 kilograms: a kg being the standard measurement unit for mass.
What is 40 grams?
40 grams is a unit of measurement for mass or weight. It is equivalent to roughly 1.41 ounces in the imperial system.
What measurement has 5 significant figures?
302.05 grams
How many significant figures are there in the measurement 79.01 grams?
5
Which measurement below had five significant figures?
302.05 grams
How many significant numbers are in the measurement 807.44 grams?
There are 4 significant figures in this problem.
How many significant figures are there in the measurement 15.05 grams?
4 of them.
How many significant figures does the measurement 30.00200 grams represent?
five. 30.002
How many significant figures are in the measurement 10010 grams?
10.1+25.01+5.08
What is significant figures of a number?
The significant figures are the ones which convey meaningful information about the measurement beyond the magnitude. Saying that a sample weighs .0000039 grams is better stated as 3.9 x 10^-6 grams or perhaps 3.9 micrograms. That's two significant figures. All the zeroes are not significant.
Would you use grams or kilograms to weigh a spoon?
I would use grams because grams would give you more significant figures for the measurement than kilograms
How would you record a measurement of 16490 grams using only 2 significant figures?
The rule when rounding off numbers is "If the first figure to be discarded is 5 or more then the previous figure is increased by 1". When 16490 is rounded off to 2 significant figures then the first figure to be discarded is 4. As this is less than 5 then the previous figure (6) is not increased by 1. 16490 to 2 significant figures is 16000.
How many significant figures in 1.3070 grams?
5 significant figures.
How many significant figures should you report for an object weighing exactly 15 grams?
When reporting a measurement of 15 grams, it has two significant figures, as both digits (1 and 5) are non-zero and contribute to its precision. Since the number is presented without any decimal point, it implies that the measurement is exact to the nearest whole gram. Therefore, you should report the weight of the object as having two significant figures.
