You didn’t put a diagram up
What is there initial budget? and then take that and multiply by .3 and the. subtract that number from the original budget and you get your answer
1.75 (moles O2) × 6 (moles H2O) ÷ 9 (moles O2) = 1.17 (moles H2O)
You have to convert moles of O2 into moles of H2O so it's the number of moles you start with (1.75 O2) × the number of moles from the element you want (6 H20), then ÷ by the number of moles that the element that you already have (9 O2).
Answer:
Explanation:
Accuracy is defined is as the ability to perfectly repeat results in an experiment. It is simply reproducing the same set of result with little to no altercation.
Precision is nearness of the result to the true value.
(a) Checking for consistency in the weight of chocolate chip cookies: 17.27 g, 13.05 g, 19.46 g, 16.92 g
The result above is neither accurate nor precise. We can see a lot of inconsistencies in the readings shown and no repeatability whatsoever.
(b) Testing the volume of a batch of 25- mL pipettes: 27.02mL, 26.99 mL, 26.97 mL, 27.01 mL
The results here are accurate but not precise. They are a little bit off the 25mL mark but the experiment was able to reproduce nearly the same result.
(c)Determining the purity of gold: 99.9999%, 99.9998%, 99.9999%
This result is both precise and accurate. Pure Gold should be 100% and our values are very close. The experiment also was able to generate very accurate results.
Answer: 23.6 grams HCl
Explanation:
The density 1.18g/mL just means that there is 1.18 grams of HCl per 1 mL of it.
So if you have 20 mL of it, it would just be 1.18 * 20 grams. This equals 23.6 grams of HCl.
It's just like if at your supermarket they sold apples for $1.00/lb. If you wanted 5 lbs, it would cost $5.00 ($1.00 * 5).
