Answer & Explenation:
2H2 + O2 -> 2H20 is the balanced equation for the reaction of Hydrogen with Oxygen to form water so
If you have 32g of O2 this is a simple Dimensional analysis problem
32g O2 x 36.03056g H20/31.9988g O2 this way the O2 cancels out and you are left with just the H2O so your raw answer would be 36.0319112, then if your instructor requires a significant figure answer that would be to 2 significant figures the information you were given 32g O2, so as above 36g or Water are produced. Just a different way to view and solve the problem with the balanced equation so you can see the way everything relates to everything else. the molar masses of O2 and H2O are simply found my adding up 2 Oxygens 15.9994g x2 = 31.9988g and H2O = 2(1.00794) + 15.9994 = 18.01258 but you then have to multiply that by 2 because the reaction states you get 2 mols in the reaction so that is where I came up with the 36.03056g for the solution. Hope this helps. Dimensional Analysis is and can be one of the best ways to solve these problems, because not always are you going to be dealing with 1:2 ratios.
Answer:
divergent
Explanation:
I believe it is divergent.
Answer:
- <em>The measurements taken by </em><em><u>Jay</u></em><em> are least likely to contain random errors.</em>
Explanation:
All experimental measures are subject to errors.
Even when the colorimeter is properly calibrated and correctly used, there are random errors.
Random errors are are due to fortuitous factors, such as minor oversight by the observer or small changes of the conditions under which the measurements are made.
You can minimize the random errors by increasing the number of measurements, because the random errors tend to happen in any direction; some measures will be greater and other will be less than the true value.
Chance will make that errors in on direction cancel with errors in the opposed direction, making the average the best measure.
Thus, <em>Jay</em>, by <em>repeating the experiment five times and taking the average measurement</em>, is making that<em> his measurements are</em> <em>least likely to contain random errors.</em>
Answer:
n = 0.005 mol
Explanation:
Given data:
Volume = 115 mL
Temperature = 21°C
Pressure = 746 mmHg
Number of moles = ?
Solution:
746 mmHg = 746 /760 = 0.98 atm
21°C = 21+273 = 294 K
115 mL /1000 = 0.115 L
PV = nRT
n = PV/RT
n = 0.98 atm × 0.115 L / 0.0821 atm. L. mol⁻¹. K⁻¹ ×294 K
n = 0.1127 atm. L /24.14 atm. L. mol⁻¹
n = 0.005 mol
When molten rock underneath earth crust moves it causes the plates to moved sometimes seperating and other times coliding and causing earthquakes
